W3C Markup Validation Service
HTML Validator
Total Validator
Rocket Validator
PageSpeed Insights
GTmetrix
Nibbler
Scrutiny
Rarchy
FlowMapp
Octopus.do
VisualSitemaps
SlickPlan
DYNO Mapper
Talebook
PowerMapper
Rarchy offers a suite of website planning tools, including visual sitemaps and user flows, designed for agencies and teams.
The core product is our free visual sitemap editor, which allows you to create a sitemap from scratch or import your existing website pages via our visual sitemap generator. You're then able to view your website in five different visual formats, use the drag-and-drop interface to make changes, and auto-capture screenshots of your current page designs. Your sitemap can be exported to XML (ready to upload to search engines), CSV, or PDF format.
Rarchy is ideal for teams, allowing you to collaborate, revise, and communicate changes to your website in one place.
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Based on our record, W3C Markup Validation Service seems to be more popular. It has been mentiond 95 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.
Validate Your Code Include tools like W3C code validation service and CSS validator to ensure your code meets web standards. - Source: dev.to / about 2 months ago
===> Click here to run your code through the HTML validator. - Source: dev.to / 5 months ago
Try looking at tools like https://validator.w3.org/. Source: 6 months 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: 11 months ago
Not an addon, but maybe it helps Https://validator.w3.org/. Source: 12 months ago
HTML Validator - HTML Validator is a Mozilla extension that adds HTML validation inside Firefox and Mozilla.
FlowMapp - FlowMapp is a UX planning tool for creating visual sitemaps and user flow.
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.
Octopus.do - Build your website structure in real-time and rapidly share it to collaborate with your team or clients. Start prototyping websites or apps instantly.
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.
VisualSitemaps - Autogenerate visual sitemaps in seconds.