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HTTP/2 200
date: Fri, 10 Oct 2025 16:04:02 GMT
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HTML Diff service
by Dominique Hazaël-Massieux
based on Shane McCarron’ Perl script wrapped in a Python CGI
Create Diff between HTML pages
Tip: if the document uses the W3C convention on linking to its previous version, you can specify only the address of the new document — the previous link will be automatically detected.
Diff markings
This service relies on GNU diff. The found differences are roughly marked as follow:
- deleted text is shown in pink with down-arrows (as styled for a <del> element)
- where there is replacement, it’s shown in green with bi-directional arrows,
- where there is newly inserted text, it’s yellow with up arrows (<ins> element)
by Dominique Hazaël-Massieux
based on Shane McCarron’ Perl script wrapped in a Python CGI