HTML, XML Diff Checker
Paste two versions of HTML and XML markup to compare additions, removals and edited lines with HTML, XML syntax highlighting. The diff runs locally in your browser.
Texto original
Texto alterado
HTML, XML syntax locked
This page automatically highlights HTML, XML tokens, so you do not need to pick a language before comparing files.
Private local compare
The diff runs in your browser. Source code, API payloads and configuration files are not uploaded to a server.
Split or unified review
Use split view for side-by-side review, unified view for compact patches, and hide unchanged lines for large files.
Compare HTML, XML files online
This HTML, XML diff checker is built for developers who need a fast, private way to compare code and configuration changes. Paste two versions, run the comparison, and review additions, removals and inline edits with HTML, XML syntax highlighting already enabled.
Paste or upload the original HTML, XML file on the left.
Paste or upload the changed HTML, XML file on the right.
Compare the result in split or unified view, then hide unchanged lines when you only need the edited regions.
Private browser-based HTML, XML comparison
The diff runs locally in your browser, which keeps source code, API responses, secrets and configuration files on your device. One recent session may be stored in your browser storage for restore, and you can clear it from the tool at any time.
Common HTML, XML diff workflows
Review attribute, tag and nested structure changes.
Check generated HTML or XML output against expected text.
HTML, XML syntax highlighting
Highlighting is locked to HTML, XML on this page, so the language selector stays out of the way. The parser focuses on tokens such as tags, attributes, entities, nested elements while the diff engine highlights the actual text changes.
.html, .htm, .xml, .svg
Reference: MDN HTML reference
HTML, XML diff checker FAQ
What is a HTML/XML diff checker?
A HTML/XML diff checker compares two versions of HTML, XML content and highlights added, removed and edited lines. This page locks syntax highlighting to HTML, XML, so language tokens are easier to scan while reviewing changes.
Does this HTML, XML diff tool upload my code?
No. The comparison runs in your browser. Your HTML or XML files are not uploaded to a server when you click Compare.
Which HTML, XML file types can I compare?
You can paste or upload plain-text files such as .html, .htm, .xml, .svg. Any text file can be compared, but this page highlights HTML, XML syntax automatically.
Can I compare large HTML, XML files?
Yes. Large comparisons run in a background worker so the browser stays responsive. Very large files may still take a few seconds on your device.