W3C Markup Validation Service
HTML Validator
Total Validator
Rocket Validator
PageSpeed Insights
GTmetrix
Nibbler
Scrutiny
Adee Accessibility Tool
Accessify
Stark for FigJam
Nibbler
Topvisor
The Better Workplace Toolkit
Quotemarks
Invision
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Based on our record, W3C Markup Validation Service seems to be more popular. It has been mentiond 97 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
Looking at the html of HN's pages, can't blame them really. Running though https://validator.w3.org/ , the result is abysmal. At this rate, if web browsers started requiring sites to output HTML that is somewhere in the realm of normalcy, HN would sooner shut down than consider ever updating. - Source: Hacker News / 9 days ago
Whether you’re a frontend developer, lead, or manager, reconsider your expectations and practices if you haven’t yet chosen not to ship erroneous HTML. The more of us decide to talk about using actual HTML on our sites and in our apps, and lead by example, the better for our users and clients, and the better for our craft and profession. On the engineering side of web development, it’s HTML first—if it is HTML. - Source: dev.to / 22 days ago
Validate Your Code Include tools like W3C code validation service and CSS validator to ensure your code meets web standards. - Source: dev.to / 3 months ago
===> Click here to run your code through the HTML validator. - Source: dev.to / 6 months ago
Try looking at tools like https://validator.w3.org/. Source: 6 months ago
HTML Validator - HTML Validator is a Mozilla extension that adds HTML validation inside Firefox and Mozilla.
Accessify - Manage access to all the services your team uses
Total Validator - Total Validator can check your website to help ensure that it is accessible, uses valid HTML and CSS, has no broken links, and is free from spelling mistakes.
Stark for FigJam - Stark for FigJam provides designers, engineers, and product managers role specific accessibility checklists.
Rocket Validator - Site-wide Accessibility and HTML validation made easy. With a single click, Rocket Validator will check thousands of web pages on your site for Accessibility and HTML conformance, producing a detailed, actionable report on seconds.
Nibbler - Free tool for testing how good your website is, and what you can do to improve it. Check accessibility, SEO, social media, compliance and more.