Compared in Your Browser
Your HTML source is processed locally and is not sent to the Compare2Word document-processing API.
Compare HTML Files Online
Paste or open two versions of HTML source and quickly find the lines and text that changed.
Click to select or drag file
Supports .html, .htm, .txt
MAX 50MBRead and compared on this device.
Click to select or drag file
Supports .html, .htm, .txt
MAX 50MBRead and compared on this device.
Source-Level HTML Diff
Compare HTML and HTM source as text, including tags, attributes, comments, and visible copy.
Split or Unified Review
See added and removed lines in the layout that makes a code review easiest for you.
Review Changes Between Two HTML Sources
Check page edits and template revisions
Use the HTML diff checker to review changes to landing pages, email templates, components, or saved page source without reading both files from top to bottom.
See the exact source that changed
Tags, attributes, comments, whitespace, and text content are compared as source lines. Split and unified views help you inspect edits in the format you prefer.
Not a visual or DOM comparison
The tool does not render the pages, compare screenshots, build a DOM tree, or judge whether two implementations behave or look the same. Formatting changes in the source may appear even when the rendered page is unchanged.
HTML File Comparison FAQ
How do I compare two HTML files?
Paste the two HTML sources or choose HTML or HTM files, then start the comparison to highlight changed source lines.
Does the tool compare how two web pages look?
No. It compares HTML source as text and does not render pages or compare screenshots and visual layout.
Does it understand DOM or semantic changes?
No. The comparison is line-based text diffing, so it does not build a DOM tree or determine whether different markup has the same meaning.
Can whitespace and formatting changes appear in the result?
Yes. Because the source is compared as text, indentation, line breaks, and other formatting edits may be shown as differences.
Is my HTML uploaded for comparison?
The comparison runs in your browser and the source is not sent to the Compare2Word document-processing API.