Standards Compliance
The W3C Markup Validation Service ensures that your web pages conform to established web standards, helping to improve web interoperability and accessibility.
Error Identification
The service identifies errors and warnings in your HTML and XHTML documents, making it easier to debug and fix these issues to improve code quality.
Improved Compatibility
By validating your markup, you can better ensure that your web pages are compatible with various browsers and devices, providing a more consistent user experience.
Free of Charge
The validation service is provided by W3C at no cost, making it an accessible tool for developers of all levels to enhance their web projects.
Educational Tool
For beginners in web development, the W3C Validator can serve as an educational resource by highlighting common mistakes and promoting best practices in coding.
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How to use HTML Validation service 👇 Step 1: Access the HTML validator ● Open the HTML validator in your web browser i.e go to https://validator.w3.org/. - Source: dev.to / 2 months ago
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 months 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 / 10 months ago
Validate Your Code Include tools like W3C code validation service and CSS validator to ensure your code meets web standards. - Source: dev.to / 12 months ago
===> Click here to run your code through the HTML validator. - Source: dev.to / about 1 year ago
Try looking at tools like https://validator.w3.org/. Source: over 1 year ago
I'm looking for either that specific validator (older version of https://validator.w3.org/) or an equivalent that can validate pre-HTML5 (DTD-based) files in a similar fashion. I would appreciate any pointers in the right direction. Thanks in advance. Source: over 1 year ago
Not an addon, but maybe it helps Https://validator.w3.org/. Source: almost 2 years ago
Issues like missing h1 and the like: this most probably has nothing to do with react / next. Make sure your html structure is correct and elements are used correctly. Check here https://validator.w3.org/. Source: almost 2 years ago
Https://validator.w3.org/ Try pasting your html into a validator when you’re stuck, helpful to debug. Source: almost 2 years ago
Can't help you on the bootstrap side, but run your HTML and CSS through https://validator.w3.org/ to see what errors in your code you might be able to correct. Source: almost 2 years ago
I would run the code through a W3C validator to see if all is correct https://validator.w3.org/. Source: about 2 years ago
I would suggest you to use a HTML validator. A quick google search will show you a few of them. The first result most likely will be a https://validator.w3.org/. In My experience it works well and would help you with this type of problem. Source: about 2 years ago
Back to basics, but have you tried validating both your HTML and your CSS? Source: about 2 years ago
The first thing to do when your HTML isn't working as you're expecting it to is to validate it. The tool will catch stray tags or typos and provide useful feedback. Source: about 2 years ago
In this context, "must have" means "to pass the W3C validator," because in the long run, XHTML 2.0 was meant to be read only by browsers that could parse XML (not HTML). No XML, no content shows up (either XML on the browser end, or proper XHTML on the author end). Source: about 2 years ago
When you do a few different sample sites it will give your future clients something to be sold on. Make each site different - do at least one without bells and whistles (i.e. No Javascript, etc), one using something like PHP, etc. Helps to show clients your range. And validate every site using something like validator.w3.org and fix any issues reported. Source: about 2 years ago
HTML validation is kinda irrelevant since it's up to browsers to interpret your HTML and they don't follow the standards perfectly. Errors that the validator finds may not have any impact on real-world use, and problems that show up in browsers may not be found by the validator. For instance, I just tried running a site through validator.w3.org and it gave an error because it thinks the pipe symbol (|) is not... Source: about 2 years ago
Are you writing this HTML yourself? It's malformed (throw it into the official W3 validator to check). Source: about 2 years ago
The w3c validator is one of the many HTML validators that checks your HTML markup to see if you are following the rules for constructing proper HTML. Source: about 2 years ago
This will be a video tutorial on how to find and fix html coding errors using an online validation service. For this tutorial I will be using the W3C validator https://validator.w3.org/. Source: about 2 years ago
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