LinkChecker
Pulno
DRKSpiderJava
Dead Link Checker
Checkbot
Xenu's Link Sleuth
Dr. Link Check
Meta Forensics
W3C Markup Validation Service
HTML Validator
Total Validator
PageSpeed Insights
Rocket Validator
GTmetrix
Nibbler
Scrutiny
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Based on our record, W3C Markup Validation Service seems to be a lot more popular than LinkChecker. While we know about 95 links to W3C Markup Validation Service, we've tracked only 1 mention of LinkChecker. 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.
Today I found linkchecker - available as a unix command-line program (although it also has a GUI or a web interface). - Source: dev.to / over 1 year ago
Validate Your Code Include tools like W3C code validation service and CSS validator to ensure your code meets web standards. - Source: dev.to / about 1 month 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: 5 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: 11 months ago
Pulno - SEO Audit and Website Analysis. Pull up your SEO.
HTML Validator - HTML Validator is a Mozilla extension that adds HTML validation inside Firefox and Mozilla.
DRKSpiderJava - DRKSpider is an open source website crawler (sitemap generator) and link checker. Features:
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.
Dead Link Checker - Check for broken links on any website
PageSpeed Insights - PageSpeed is addon for ...