#Cross-browser compatibility

[happypandajunkremoval]

Front-end Development

Front-end Development: Crafting Engaging User Experiences

Front-end development is the art and science of crafting the visual and interactive aspects of a website or application. As the digital landscape evolves, front-end development has become more crucial than ever, playing a significant role in how users perceive and interact with online platforms. In this blog post, we’ll explore the essentials of front-end development, the key skills required, and why it is vital in today’s web-driven world.

What is Front-end Development?

Front-end development refers to the part of web development that involves creating the user interface (UI) and ensuring that a website or application is both visually appealing and functional. It’s what users see and interact with directly, making it a critical component in delivering a seamless user experience (UX).

The primary tools of a front-end developer include HTML, CSS, and JavaScript:

HTML (HyperText Markup Language): The backbone of any web page, HTML structures the content, providing the basic framework that other technologies build upon.

CSS (Cascading Style Sheets): CSS controls the presentation of the HTML, including layout, colors, fonts, and responsiveness. It’s what makes a website look good on different devices and screen sizes.

JavaScript: This programming language adds interactivity to a web page, enabling dynamic content like slideshows, form validations, and interactive maps.

The Role of Front-end Developers

Front-end developers bridge the gap between design and technology. They work closely with designers to translate visual designs into functional code and collaborate with back-end developers to ensure the front-end interacts smoothly with server-side components.

Key Skills for Front-end Developers

To excel in front-end development, a developer needs a blend of technical skills and creative problem-solving abilities. Here are some of the essential skills:

Proficiency in HTML, CSS, and JavaScript: These are the foundational technologies every front-end developer must master. Advanced knowledge of frameworks like React, Angular, or Vue.js is also increasingly valuable.

Responsive Design: With the rise of mobile devices, understanding how to create layouts that work across different screen sizes is crucial. This involves using flexible grids, fluid layouts, and media queries.

Version Control Systems (e.g., Git): Keeping track of changes and collaborating with other developers requires proficiency in version control systems.

Cross-Browser Compatibility: Ensuring that a website functions and looks consistent across various browsers can be challenging but is necessary for reaching a wide audience.

Performance Optimization: Speed is vital for user satisfaction and SEO. Front-end developers must optimize images, minify code, and leverage browser caching to enhance performance.

Testing and Debugging: Identifying and fixing issues in the front-end code is an ongoing task. Tools like Chrome DevTools and various testing frameworks help in this process.

The Importance of Front-end Development

In today’s digital world, a company’s website or application often serves as the first point of contact with potential customers. A well-crafted front-end not only attracts users but also keeps them engaged, encouraging them to explore further and convert into customers.

Furthermore, as technology evolves, front-end development has expanded to include not just websites but also web apps, mobile apps, and even interfaces for IoT devices. This expansion has increased the demand for skilled front-end developers who can deliver consistent and intuitive user experiences across multiple platforms.

Conclusion

Front-end development is a dynamic field that requires a mix of creativity, technical expertise, and a keen eye for detail. As businesses continue to prioritize online presence, the role of front-end developers will only grow in importance. By mastering the essential tools and skills, developers can create engaging, user-friendly interfaces that stand out in the crowded digital space.

Whether you're a seasoned developer or someone looking to break into the field, front-end development offers a rewarding career path with endless opportunities for innovation and growth.

In this blog, we covered the essentials of front-end development, key skills required, and its growing importance in today’s digital world. For anyone interested in building beautiful, interactive websites, front-end development is the perfect avenue to explore.

[tigmatemplate]

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[zapperrr]

Stay Ahead of the Curve: Latest E-commerce Development Trends

Zapeerr provides comprehensive e-commerce development services tailored to meet the unique needs of businesses seeking to establish or enhance their online presence. Here are the key e-commerce development services offered by Zapeerr:

1. Customized Website Development: Zapeerr specializes in building customized e-commerce websites from the ground up, ensuring that each site is designed to reflect the brand identity and offers a seamless user experience.

Platform Selection and Implementation: Zapeerr helps businesses select the most suitable e-commerce platform for their needs, whether it's Shopify, WooCommerce, Magento, or a custom solution. They then handle the implementation and configuration of the chosen platform to ensure optimal performance.

Mobile Optimization: Zapeerr ensures that e-commerce websites are optimized for mobile devices, providing a consistent and intuitive shopping experience across all screen sizes and devices.

Payment Gateway Integration: Zapeerr integrates secure payment gateways into e-commerce websites, allowing businesses to accept payments from various sources securely and efficiently.

Inventory Management Solutions: Zapeerr develops robust inventory management systems that enable businesses to track stock levels, manage product variants, and prevent overselling, ensuring smooth operations and customer satisfaction.

Security Enhancements: Zapeerr prioritizes security by implementing measures such as SSL encryption, PCI compliance, and regular security audits to protect sensitive customer data and safeguard against cyber threats.

Performance Optimization: Zapeerr optimizes e-commerce websites for speed and performance, employing techniques such as caching, image optimization, and code minification to ensure fast page loading times and smooth navigation.

SEO Integration: Zapeerr integrates search engine optimization (SEO) best practices into e-commerce websites to improve visibility and attract organic traffic, helping businesses increase their online presence and drive sales.

Integration with Third-Party Services: Zapeerr facilitates seamless integration with third-party services such as shipping carriers, accounting software, CRM systems, and marketing tools, enabling businesses to streamline operations and enhance efficiency.

Continuous Support and Maintenance: Zapeerr provides ongoing support and maintenance services to ensure the smooth functioning of e-commerce websites, including software updates, bug fixes, and technical support to address any issues promptly.

With Zapeerr's expertise in e-commerce development, businesses can achieve their online objectives effectively and stay ahead in the competitive digital landscape.

[ourjobagency]

Technology plays a vital role in everyone’s daily lives, from the simplest forms of applications to the most creative inventions. Every application or software has been built by a web developer. In these present days, students and youngsters want to be web developers to make their careers way better.

[designtocodes]

Lakesuites: A Professional Hotel Website Template

Unleash the Beauty of Your Hotel with Lakesuites: A Professional Hotel Website Template.

Lakesuites is a modern, versatile, and user-friendly website template designed to enhance your hotel’s online presence.

[tawhidurrahmandear]

Moyna WordPress Theme is ideal for self-hosted Micro Blog, Community Social Network, News Headlines Publishing etc.

https://wordpress.org/themes/moyna/

[furiouslovepolice]

Moyna is ideal for micro blog, community social network, news headlines publishing.

[gagande]

PureCode software reviews | The Challenge of Cross-Browser Compatibility

In the realm of JavaScript chart libraries, cross-browser compatibility is a crucial concern. Ensuring that a library works consistently across all browsers, including older versions, can be a challenging task.

[punwow]

Tricky and Clever Pun Questions with Surprising Answers

Are you ready to put your wit and wordplay skills to the test? Look no further! At PunWow.com, we bring you a collection of mind-boggling pun questions and answers that will challenge your cleverness and leave you chuckling. Get ready for a dose of laughter and brain-teasing as we explore some hard and tricky pun questions with surprising answers!

Why did the scarecrow win an award?

Answer: Because he was outstanding in his field!

Explanation: This pun is a clever play on words, using the term "outstanding" to refer to the scarecrow excelling in his field of work.

Why did the bicycle fall over?

Answer: Because it was two-tired!

Explanation: This pun exploits the double meaning of the word "tired" to create a humorous situation where the bicycle falls due to being both physically exhausted and having two tires.

What do you call a fish wearing a crown?

Answer: King Neptune!

Explanation: This pun combines the name of the Roman god of the sea, Neptune, with the term "king" to create a playful and amusing image of a fish wearing a crown.

How do you organize a space party?

Answer: You "planet"!

Explanation: This pun cleverly uses the word "planet" as a play on words with "plan it," suggesting that organizing a space party involves planning.

Conclusion:

PunWow.com offers a delightful array of questions and answers that are sure to tickle your funny bone while challenging your wordplay skills. Whether you're looking to entertain friends or simply enjoy a good laugh, these hard and tricky questions with surprising answers will keep you entertained for hours. Visit our website and delve into the world of puns, where wit meets humor! Get ready to impress your friends with your clever responses and enjoy the delightful journey of punning!

[zapperrr]

Securing Your Website: Best Practices for Web Developers

As the digital landscape continues to evolve, website security has become a paramount concern for businesses and individuals alike. With cyber threats becoming increasingly sophisticated, it is crucial for web developers to adopt robust security measures to safeguard their websites and the sensitive data they handle. In this article, we'll delve into the best practices that web developers can implement to enhance the security of their websites and protect against potential threats.

Introduction

In today's interconnected world, websites serve as the digital storefront for businesses, making them vulnerable targets for cyber attacks. From data breaches to malware infections, the consequences of a security breach can be severe, ranging from financial loss to damage to reputation. Therefore, prioritizing website security is essential for maintaining the trust and confidence of users.

Understanding Website Security

Before diving into best practices, it's crucial to understand the importance of website security and the common threats faced by websites. Website security encompasses measures taken to protect websites from cyber threats and unauthorized access. Common threats include malware infections, phishing attacks, SQL injection, cross-site scripting (XSS), and brute force attacks.

Best Practices for Web Developers

Keeping Software Updated

One of the most fundamental steps in website security is keeping all software, including the content management system (CMS), plugins, and server software, updated with the latest security patches and fixes. Outdated software is often targeted by attackers due to known vulnerabilities that can be exploited.

Implementing HTTPS

Implementing HTTPS (Hypertext Transfer Protocol Secure) encrypts the data transmitted between the website and its users, ensuring confidentiality and integrity. HTTPS not only protects sensitive information but also boosts trust among visitors, as indicated by the padlock icon in the browser's address bar.

Using Strong Authentication Methods

Implementing strong authentication methods, such as multi-factor authentication (MFA) and CAPTCHA, adds an extra layer of security to user accounts. MFA requires users to provide multiple forms of verification, such as a password and a one-time code sent to their mobile device, reducing the risk of unauthorized access.

Securing Against SQL Injection Attacks

SQL injection attacks occur when malicious actors exploit vulnerabilities in web applications to execute arbitrary SQL commands. Web developers can prevent SQL injection attacks by using parameterized queries and input validation to sanitize user inputs effectively.

Protecting Sensitive Data

It's essential to employ encryption techniques to protect sensitive data, such as passwords, credit card information, and personal details, stored on the website's servers. Encrypting data at rest and in transit mitigates the risk of data breaches and unauthorized access.

Regular Security Audits

Conducting regular security audits helps identify vulnerabilities and weaknesses in the website's infrastructure and codebase. Penetration testing, vulnerability scanning, and code reviews enable web developers to proactively address security issues before they are exploited by attackers.

Choosing a Secure Hosting Provider

Selecting a reputable and secure hosting provider is critical for ensuring the overall security of your website. When evaluating hosting providers, consider factors such as security features, reliability, scalability, and customer support.

Evaluating Security Features

Choose a hosting provider that offers robust security features, such as firewalls, intrusion detection systems (IDS), malware scanning, and DDoS protection. These features help protect your website from various cyber threats and ensure continuous uptime.

Ensuring Regular Backups

Regularly backing up your website's data is essential for mitigating the impact of security incidents, such as data breaches or website compromises. Choose a hosting provider that offers automated backup solutions and store backups securely offsite.

Customer Support and Response to Security Incidents

Opt for a hosting provider that provides responsive customer support and has established protocols for handling security incidents. In the event of a security breach or downtime, prompt assistance from the hosting provider can minimize the impact on your website and business operations.

Implementing Firewall Protection

Firewalls act as a barrier between your website and external threats, filtering incoming and outgoing network traffic based on predefined security rules. There are several types of firewalls, including network firewalls, web application firewalls (WAF), and host-based firewalls.

Configuring and Maintaining Firewalls

Properly configuring and maintaining firewalls is crucial for effective security. Define firewall rules based on the principle of least privilege, regularly update firewall configurations to reflect changes in the website's infrastructure, and monitor firewall logs for suspicious activity.

Educating Users about Security

In addition to implementing technical measures, educating users about security best practices is essential for enhancing overall website security. Provide users with resources, such as security guidelines, tips for creating strong passwords, and information about common phishing scams.

Importance of User Awareness

Users play a significant role in maintaining website security, as they are often the targets of social engineering attacks. By raising awareness about potential threats and providing guidance on how to recognize and respond to them, web developers can empower users to stay vigilant online.

Providing Training and Resources

Offer training sessions and educational materials to help users understand the importance of security and how to protect themselves while using the website. Regularly communicate updates and reminders about security practices to reinforce good habits.

Monitoring and Responding to Security Incidents

Despite taking preventive measures, security incidents may still occur. Establishing robust monitoring systems and incident response protocols enables web developers to detect and respond to security threats in a timely manner.

Setting Up Monitoring Tools

Utilize monitoring tools, such as intrusion detection systems (IDS), security information and event management (SIEM) systems, and website monitoring services, to detect abnormal behavior and potential security breaches. Configure alerts to notify you of suspicious activity promptly.

Establishing Incident Response Protocols

Develop comprehensive incident response plans that outline roles, responsibilities, and procedures for responding to security incidents. Establish clear communication channels and escalation paths to coordinate responses effectively and minimize the impact of security breaches.

Securing your website requires a proactive approach that involves implementing a combination of technical measures, choosing a secure hosting provider, educating users about security best practices, and establishing robust monitoring and incident response protocols. By following these best practices, web developers can mitigate the risk of security breaches and safeguard their websites and the sensitive data they handle.

[ourjobagency]

Technology plays a vital role in everyone’s daily lives, from the simplest forms of applications to the most creative inventions. Every application or software has been built by a web developer. In these present days, students and youngsters want to be web developers to make their careers way better.

[britcision]

I’m pretty sure the people bitching about not giving money to tumblr are the same ones who complain when AO3 or wikipedia ask for donations, so I’m just gonna clarify something

Running a website is not free

Even if they made no changes and did only maintenance, they still need to pay for server costs, expert programmers for when something goes wrong, storage (although frankly storage is cheap as chips these days which is nice)

They need to keep up with the capabilities of new tech like improvements to web browsers, never mind their own apps keeping pace with old and new tech developments

Backwards compatibility (being able to run the updated app on old tech) is a massive problem for apps on a regular basis, because there are people out here using an iPod and refusing to update software

There’s a reason every few years apps like Animal Crossing will issue an update that breaks backwards compatibility and you can only play if your phone is running more recent software

This shit costs money even before you look into the costs of human moderation, which I’m not exactly convinced is a big part of their current budget but fucking should be if we want an actual fix for their issues with unscreened ads and reporting bigots

Ignoring that it’s apparently illegal for companies not to actively chase profits, running Tumblr is expensive

And advertisers know we fucking hate them here

They’re still running ads, which we know because they’re all over the damn place, but half the ads are for Tumblr and its store

Other ad companies know we are not a good market, so they’re not willing to put the money in

Tumblr runs at a $30 million deficit, every year, because hosting a site is expensive

They are trying to take money making ideas from other social medias because they’re not a charity; they need to make enough money to keep the site going

If you want tumblr to keep existing, never mind fixing its many issues that require human people to be paid to do jobs like moderation, they will need money

Crabs cost $3

One crab day a year can fix the deficit and hammer home for Tumblr that:

A) we do want to be here and want the site to keep going

And B) they do not need to do the normal social media money making strategies we all hate

They need a way to make money if you want the hellsite to exist, because we live in a capitalist hellscape and cannot all be AO3

If they think they can make enough to keep running without pulling all the tricks we hate, they have no reason to pull said tricks

But they need money

And a way to make money

And if we can show them we can do that, there is a significantly higher chance they will listen to us, the user base they need money from, than if we don’t

Tumblr isn’t perfect, or anywhere close. They need someone to actually screen the paid ads they put through, they need to take the transphobia, antisemitism, and bigotry seriously

These Are Jobs That Will Cost Money

People Need To Be Fucking Paid For Their Work

Tumblr Is Not Run By Volunteers For Free And Nor Should It Be

Paying People Is Good Actually

So if you wanna get all high and mighty over $3/year, by all means, go spend that hard earned cash elsewhere

Good luck finding a perfect and morally pure business to give it to though

Being a whiny negative asshole isn’t more appealing just because you’ve put yourself on a moral soapbox, it just means the asshole is a little higher up

For all the whining about “all the new updates are terrible this site is unusable”…. It’s one fuck of a lot more usable than it was in 2017, 2018, 2020

And yeah, it’s going back down and most of the newer ones have been fucking annoying and I would also like them to stop

But it got up somehow and that means it could do that again

Hope is more fun than edgy nihilism

August 1st is a good and exciting day to summon a crab army

[izicodes]

Switching to Firefox

This post is to answer @leaveblackkbrosalone’s question on my post about me switching to Firefox!

I recently had an eye opener moment when researching about Google and how they collect data to alter the things they recommend you and other things. And it was astonishing how much data they collect on you and how they track you every movement whilst on Google/Chrome/Other Google services e.g. Google PlayStore.

I truly believe there are better alternatives out there than the default Google Chrome people tend to use. We now live in world of constant data breaches and online tracking, therefore protecting your online privacy and security has never been more important.

I’ve recently deleted Chrome from my phone and computer and switched to FireFox and I’ll explain why~!

What is Firefox?

Firefox is the famous fox web browser! It is a free and open-source that is developed by the Mozilla Foundation. It's designed to be fast, secure, and customizable, and is available for multiple operating systems, including Windows, Mac, and Linux.

Firefox includes a suite of built-in features, such as enhanced tracking protection, custom themes (so important obviously) and add-ons, and a flexible interface that can be tailored to the user's needs.

Why Firefox and not Google Chrome?

There are a bunch of reasons why I chose to delete Google Chrome and why I prefer FireFox now, let me list some:

Privacy

Firefox has a strong focus on privacy and security, with features like built-in tracking protection and a strict anti-tracking policy.

In contrast, Chrome is owned by Google, a company that relies heavily on data collection and advertising for its business model.

Customisation

Firefox has a much more flexible and customizable interface than Chrome, with a wide range of add-ons (equivalent to Chrome’s ‘extensions’ I believe) and themes available to personalize your browsing experience.

Open-source

Firefox is an open-source project, meaning that anyone can contribute to its development and review the code for security issues.

Chrome, on the other hand, is based on the Chromium project, which is also open-source but is controlled by Google.

Cross-platform compatibility

Firefox works on a wide range of devices and operating systems, including Windows, Mac, Linux, and mobile devices.

Chrome is also available on multiple platforms, but it's more heavily integrated with Google's services and ecosystem.

Performance

Firefox has made significant improvements in recent years and is now a competitive browser in terms of speed and efficiency.

Still, Chrome is known for its fast performance

Community-driven

Firefox is developed by the non-profit Mozilla Foundation, which has a strong focus on user empowerment and community involvement. This means that Firefox users have a voice in the development process and can contribute to the browser's future direction.

With all of that being said, there is one particular area that caught my eye that I mentioned briefly: the Privacy and Security.

Firefox’s Privacy and Security Advantages

Firefox definitely has advantages in these areas than Google Chrome surprisingly!

Enhanced Tracking Protection

Firefox includes built-in tracking protection that blocks many common types of trackers by default, including

third-party cookies, cryptominers, and fingerprinters

This helps to protect your online privacy and reduce the amount of data that's collected about you. Below are the options for the 'Enhance Tracking Protection' in the settings:

No Google Tracking

Oh boy, I like this one. So unlike Chrome, which is owned by Google and ties into its advertising and data collection ecosystem, Firefox is developed by the non-profit Mozilla Foundation and has no affiliation with Google or any other major tech company. This means that Firefox is less likely to collect and share your data with third parties.

No Sign-In Required

While Chrome requires you to sign in with a Google account to access certain features, Firefox does not require any sign-in at all. This means that you can still use Firefox without creating a user profile or linking your browsing activity to any personal information -

Don’t get me wrong, if you want to use the Google search engine WITHIN FireFox, it might still prompt you to sign in but you still don’t have to! Also, the choice is there to create an account just to sync bookmarks and tab from one device to another e.g. phone to laptop.

Private Browsing Mode

(Another very important part!) Firefox offers a Private Browsing mode that doesn't save your browsing history, cookies, or temporary files. This can be useful for browsing sensitive content or preventing others from seeing what you've been looking at.

Firefox's Private Browsing mode offers a more robust set of features for privacy and security than Google’s Incognito mode. Within the ‘Settings’, you can customise your privacy settings more extensively than Google Chrome. You can choose to block all third-party cookies, prevent websites from accessing your location data, and clear your browsing history and data automatically when you close the browser.

Google's Incognito mode does not block all cookies or prevent all forms of tracking.

Open-Source Security

Like I mentioned before, Firefox is an open-source project, meaning that anyone can review the code and contribute to its development. This helps to ensure that security vulnerabilities are identified and addressed quickly, and that the browser remains as secure as possible. You too can find something and report it to the repository via creating an issue!

To Conclude

Of course, these are just some general reasons why you might prefer Firefox over Chrome, and the choice ultimately comes down to personal preference and priorities. I know with developers, they would prefer Chrome for the dev tools and I think it’s almost a standard to use Chrome (though at my workplace we use Microsoft Edge), anyhoo Google is just a default for web browsing and search engine. I also know it’s hard if you have a whole Google ecosystem set up like Google docs to Sheet to Slides, emails, calendar etc, you can still use them but on a safer browser.

I would also recommend using ‘DuckDuckGo’ for a search engine as they too are really good with security and privacy but as a search engine (plus on their phone app they have a cool animation when you want to delete you browsing data from the tabs hehe)!

Links to interesting pages for more information on this topic:

YouTube videos: video 1 | video 2 | video 3 | video 4

Articles: article 1 | article 2 | article 3

I’d say give it a go, if you don’t like it I still recommend anything but Google Chrome! Well, that’s all and thank you for reading! 🥰👍🏾💗

[moonlit-tulip]

What's your favorite ebook-compatible reading software? Firefox EPUBReader isn't great, but I'm not what, if anything, works better.

Very short answer: for EPUBs, on Windows I use and recommend the Calibre reader, and on iOS I use Marvin but it's dying and no longer downloadable so my fallback recommendation is the native Apple Books app; for PDFs, on Windows I use Sumatra, and on iOS I use GoodReader; for CBZs, I use CDisplayEx on Windows and YACReader on iOS; and I don't use other platforms very often, so I can't speak as authoritatively about those, although Calibre's reader is cross-platform for Windows/Mac/Linux, and YACReader for Windows/Mac/Linux/iOS/Android, so they can serve as at least a minimum baseline of quality against which alternatives can be compared for those platforms.

Longer answer:

First off, I will say: yeah, Firefox EPUBReader isn't great. Neither, really, are most ebook readers. I have yet to find a single one that I'm fully satisfied with. I have an in-progress project to make one that I'm fully satisfied with, but it's been slow, probably isn't going to hit 1.0.0 release before next year at current rates, and isn't going to be actually definitively the best reader on the market for probably months or years post-release even assuming I succeed in my plans to keep up its development. So, for now, selection-of-ebook-readers tends to be very much a matter of choosing the best among a variety of imperfect options.

Formats-wise, there are a lot of ebook formats, but I'm going to collapse my answers down to focusing on just three, for simplicity. Namely: EPUB, PDF, and CBZ.

EPUB is the best representative of the general "reflowable-text ebook designed to display well on a wide variety of screens" genre. Other formats of similar nature exist—Kindle's MOBI and AZW3 formats, for instance (the latter of which is, in essence, just an EPUB in a proprietary Amazon wrapper)—but conversion between formats-in-this-broad-genre is generally pretty easy and not excessively lossy, so you're generally safe to convert to EPUB as needed if you've got different formats-in-this-genre and a reader that doesn't support those formats directly. (And it's rare for a program made by anyone other than Amazon to work for non-EPUB formats-in-this-genre and not for EPUBs.)

PDF is a pretty unique / distinctive format without any widely-used alternatives I'm aware of, unless you count AZW4 (which is a PDF in a proprietary Amazon wrapper). It's the best format I'm aware of for representations of books with rigid non-reflowable text-formatting, as with e.g. TTRPG rulebooks which do complicated things with their art-inserts and sidebars.

And CBZ serves here as a stand-in for the general category of "bunch of images in an archive file of some sort, ordered by filename", which is a common format for comics. CBZ is zip-based, CBR is RAR-based, CB7 is 7-zip-based, et cetera; but they're easy to convert between one another just by extracting one and then re-archiving it in one's preferred format, and CBZ is the most commonly distributed and the most commonly supported by readers, so it's the one I'm going to focus on.

With those prefaces out of the way, here are my comprehensive answers by (platform, format) pair:

Browser, EPUB

I'm unaware of any good currently-available browser-based readers for any of the big ebook formats. I've tried out EPUBReader for Firefox, as well as some other smaller Firefox-based reader extensions, and none of them have impressed me. I haven't tested any Chrome-based readers particularly extensively, but based on some superficial testing I don't have the sense that options are particularly great there either.

This state of affairs feels intuitively wrong to me. The browser is, in a significant sense, the natural home for EPUB-like reflowable-text ebooks, to a greater degree than it's the natural home for a great many of the other things people manage to warp it into being used for; after all, EPUBs are underlyingly made of HTML-file-trees. My own reader-in-progress will be browser-based. But nonetheless, for now, my advice for browser-based readers boils down to "don't use them unless you really need to".

If you do have to use one, EPUBReader is the best extension-based one I've encountered. I have yet to find a good non-extension-based website-based one, but am currently actively in the market for such a thing for slightly-high-context reasons I'll put in the tags.

Browser, PDF

Firefox and Chrome both have built-in PDF readers which are, like, basically functional and fine, even if not actively notably-good. I'm unaware of any browser-based PDF-reading options better than those two.

Browser, CBZ

If there exist any good options here, I'm not aware of them.

Windows, EPUB

Calibre's reader is, unfortunately, the best on the market right now. It doesn't have a very good scrolled display mode, which is a mark against it by my standards, and it's a bit slow to open books and has a general sense of background-clunkiness to its UI, but in terms of the quality with which it displays its content in paginated mode—including relatively-uncommon sorts of content that most readers get wrong, like vertical text—it's pretty unparalleled, and moreover it's got a generally wider range of features and UI-customization options than most readers offer. So overall it's my top recommendation on most axes, despite my issues with it.

There's also Sigil. I very emphatically don't actually recommend Sigil as a reader for most purposes—it's marketed as an EPUB editor, lacks various features one would want in a reader, and has a much higher-clutter UI than one would generally want in a reader—but its preview pane's display engine is even more powerful than Calibre's for certain purposes—it can successfully handle EPUBs which contain video content, for instance, which Calibre falls down on—so it can be a useful backup to have on hand for cases where Calibre's display-capabilities break down.

Windows, PDF

I use SumatraPDF and think it's pretty good. It's very much built for reading, rather than editing / formfilling / etc.; it's fast-to-launch, fast-to-load-pages, not too hard to configure to look nice on most PDFs, and generally lightweight in its UI.

When I need to do fancier things, I fall back on Adobe Reader, which is much more clunky on pretty much every axis for purposes of reading but which supports form-filling and suchlike pretty comprehensively.

(But I haven't explored this field in huge amounts of depth; plausibly there exist better options that I'm unaware of, particularly on the Adobe-reader-ish side of things. (I'd be a bit more surprised if there were something better than SumatraPDF within its niche, for Windows, and very interested in hearing about any such thing if it does exist.))

Windows, CBZ

My usual CBZ-reader for day-to-day use—which I also use for PDF-based comics, since it has various features which are better than SumatraPDF for the comic-reading use case in particular—is an ancient one called CDisplayEx which, despite its age, still manages to be a solid contender for best in its field; it's reasonably performant, it has most of the features I need (good handling of spreads, a toggle for left-to-right versus right-to-left reading, a good set of options for setting how the pages are fit into the monitor, the ability to force it forward by just one page when it's otherwise in two-page mode, et cetera), and in general it's a solid functional bit of software, at least by the standards of its field.

The reason I describe CDisplayEx as only "a solid contender for" best in its field, though, is: recently I had cause to try out YACReader, a reader I tried years ago on Windows and dismissed at the time, on Linux; and it was actually really good, like basically as good as CDisplayEx is on Windows. I haven't tried the more recent versions of YACReader on Windows directly, yet; but it seems pretty plausible that my issues with the older version are now resolved, that the modern Windows version is comparable to the Linux version, and therefore that it's on basically the same level as CDisplayEx quality-wise.

Mac, EPUB/PDF/CBZ

I don't use Mac often enough to have opinions here beyond "start with whatever cross-platform thing is good elsewhere, as a baseline, and go on from there". Don't settle for any EPUB reader on Mac worse than the Calibre one, since Calibre works on Mac. (I've heard vague good things about Apple's native one; maybe it's actually a viable option?) Don't settle for any CBZ reader on Mac worse than YACReader, since YACReader works on Mac. Et cetera. (For PDFs I don't have any advice on what to use even as baseline, unfortunately; for whatever reason, PDF readers, or at least the better ones, seem to tend not to be natively cross-platform.)

Linux, EPUB

For the most part, my advice is the same as Windows: just go with the Calibre reader (and maybe use Sigil as a backup for edge cases). However, if you, like me, prefer scrolled EPUB-reading over paginated EPUB-reading, I'd also suggest checking out Foliate; while it's less powerful than the Calibre reader overall, with fewer features and more propensity towards breaking in edge cases, it's basically functional for normal books lacking unusual/tricky formatting, and, unlike Calibre, it has an actually-good scrolled display mode.

Linux, PDF

I have yet to find any options I'm fully satisfied with here, for the "fast launch and fast rendering and functional lightweight UI" niche that I use SumatraPDF for on Windows. Among the less-good-but-still-functional options I've tried out: SumatraPDF launched via Wine takes a while to start up, but once launched it has the usual nice SumatraPDF featureset. Zathura with the MuPDF backend is very pleasantly-fast, but has a somewhat-unintuitive keyboard-centric control scheme and is hard to configure. And qpdfview offers a nice general-purpose PDF-reading UI, including being quick to launch, but its rendering backend is slower than either Sumatra's or Zathura's so it's less good for paging quickly through large/heavy PDFs.

Linux, CBZ

YACReader, as mentioned previously in the Windows section, is pretty definitively the best option I've found here, and its Linux version is a solid ~equal to CDisplayEx's Windows version. Like CDisplayEx, it's also better than more traditional PDF readers for reading PDF-based comics.

iOS/iPadOS, EPUB

My current main reading app is Marvin. However, it hasn't been updated in years, and is no longer available on the app store, so I'm currently in the process of getting ready to migrate elsewhere in anticipation of Marvin's likely permanent breakage some time in the next few years. Thus I will omit detailed discussion of Marvin and instead discuss the various other at-least-vaguely-comparably-good options on the market.

For general-purpose reading, including scrolled reading if that's your thing, Apple's first-party Books app turns out to be surprisingly good. It's not the best in terms of customization of display-style, but it's basically solidly functional, moreso than the vast majority of the apps on the market.

For reading of books with vertical text in particular, meanwhile, I use Yomu, which is literally the only reader I've encountered to date on any platform which has what I'd consider to be a sensible and high-quality way of handling scrolled reading of vertical-text-containing books. While I don't recommend it for more general purposes, due to awkward handling of EPUBs' tables of contents (namely, kind of ignoring them and doing its own alternate table-of-contents thing it thinks is better), it is extremely good for that particular niche, as well as being more generally solid-aside-from-the-TOC-thing.

iOS/iPadOS, PDF

I use GoodReader. I don't know if it's the best in the market, but it's very solidly good enough for everything I've tried to do with it thus far. It's fast; its UI is good at getting out of my way, while still packing in all the features I want as options when I go looking for them (most frequently switching between two-page-with-front-cover and two-page-without-front-cover display for a given book); also in theory it has a bunch of fancy PDF-editing features for good measure, although in practice I never use those and can't comment on their quality. But, as a reader, it's very solidly good enough for me, and I wish I could get a reader like it for desktop.

iOS/iPadOS, CBZ

YACReader has an iOS version; following the death of my former favorite comic reader for iOS (ComicRack), it's very solidly the best option I'm aware of on the market. (And honestly would be pretty competitive even if ComicRack were still around.) I recommend it here as I do on Linux.

Android, EPUB/PDF/CBZ

It's been years since I've had an Android device, and accordingly have very little substantial advice here. (I'm expecting to move back to Android for my next phone-and-maybe-also-tablet, out of general preferring-open-hardware-and-software-when-practical feelings, but it'll plausibly be a while, because Apple is much better at long-lasting hardware and software than any Android manufacturers I'm aware of.) For EPUB, I recall Moon+ reader was the best option I could find back circa 2015ish, but that's long enough ago that plausibly things have changed substantially at this point. For CBZ, both YACReader and CDisplayEx have Android versions, although I haven't tried either and so can't comment on their quality. For PDF, you're on your own; I have no memories or insights there.

Conclusion

...and that's it. If there are other major platforms on which ebook-reader software can be chosen, I'm failing to think of them currently, and this is what I've got for all platforms I have managed to think of.

In the future... well, I hope my own reader-in-development (slated for 1.0.0 release as a Firefox extension with only EPUB support, with ambitions of eventually expanding to cover other platforms and other formats) will one day join this recommendation-pile, but it's currently not yet in anything resembling a recommendable form. And I hope that there are lots of good reader-development projects in progress that I currently don't know about; but, if there are, I currently don't know about them.

So, overall, this is all I've got! I hope it's helpful.