Question 1

How do I compare two versions of text?

Accepted Answer

Paste or type the original text in the left input and the edited version on the right—differences appear instantly beneath the editors.

Green highlights indicate additions, while red strike-through text shows content that was removed from the original.

Question 2

What types of changes does the diff checker highlight?

Accepted Answer

The algorithm analyses words and whitespace, surfacing insertions, deletions, and unchanged segments so you can scan revisions at a glance.

It is perfect for proofreading documents, reviewing code snippets, or confirming compliance edits before publishing.

Question 3

Does whitespace or punctuation matter in the comparison?

Accepted Answer

Yes. Line breaks, tabs, and punctuation are treated as part of the content, which means formatting differences show up alongside textual edits.

If you would like to ignore spacing, normalise the text first with a formatter or replace double spaces before running the diff.

Question 4

Can I diff code, markdown, or configuration files?

Accepted Answer

Absolutely. The tool works with any plain text, making it useful for comparing JSON snippets, README updates, or HTML fragments.

Copy the highlighted output into your documentation or share it with teammates during review discussions.

Question 5

How large of a document can I compare?

Accepted Answer

It handles long articles or multi-hundred-line code blocks with ease, though extremely large files may take a moment to render in the browser.

For best performance, diff one section at a time when working with book-length manuscripts or massive logs.

Question 6

Is my content kept private?

Accepted Answer

All processing happens locally, so sensitive contracts, unpublished posts, or proprietary code never leave your device.

Clear both editors after reviewing if you are working on confidential material.

Text Diff Checker

Frequently Asked Questions