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Audit a whole website for HTML errors

Crawl a website and validate every page with the W3C Nu Html Checker. Get one row per page with its error and warning counts, and one row per error with the line and the offending markup. Replace the example site with yours.

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W3C HTML Validator
W3C HTML Validatorservice-paradis/w3c-html-reporter
Page
Valid
Errors
Warnings
+3 fields
Text
Number
Boolean
List
Object

Input

Start URLs(required)
url:https://www.python.org
Link depth:1
Maximum pages per start URL:50
Messages to list:error

Output fields

Page
Valid
Errors
Warnings
Info
Link depth
Checked

How it works

Sign up on Apify or log in

The W3C HTML Validator Actor is ready to run with the inputs already set for "Audit a whole website for HTML errors". Sign up or log in and you'll land in Apify Console with a copy of this exact task.

Start the "Audit a whole website for HTML errors" task

The W3C HTML Validator Actor will start running based on the input automatically. You can also change all the input fields, like start urls, link depth, and more, to match your specific use case.

Receive the "Audit a whole website for HTML errors" output

Monitor the progress in real time. You will be notified as soon as your dataset is complete and ready for review. Each result includes data such as page, valid, errors, and more.

Integrate into your workflow

The final output is delivered in JSON, CSV, or Excel format, ready to be plugged into your workflow. You can also run the "Audit a whole website for HTML errors" task via API.

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