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Footprints

Open the places and fragments left along the way

construction

Tools

A growing place for small tools and experiments

person

About

Learn who I am and what this site keeps circling back to

Theme

Switch to a reading atmosphere that fits the moment

Language

Switch the language of articles and moments

Recent Status

Milestone: Added multilingual support for three languages: Simplified Chinese, Traditional Chinese, and English.

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Toolbox

Text Diff

Compare two blocks of text line by line and quickly spot additions, removals, and unchanged content.

Diff Result

AddedRemovedUnchanged

Once you enter text on either side, changes will appear here line by line.

FAQ

Is my text uploaded to the server?

No. The tool reads the two text blocks in your browser and computes the diff locally. It does not submit the content to the server for storage.

Is the diff result generated locally?

Yes. Added, removed, inline highlights, and ignore-whitespace behavior are all calculated and rendered in the current page.

Does the site keep what I paste here?

No. Your input is not persisted by the site, and refreshing or closing the page clears it from the tool.

Is this suitable for comparing code?

Yes. This version is tuned for code-style review: line-based diff, mapped line numbers, nearby context, and an option to ignore whitespace-only changes.