Text comparison tool

Compare differences between two text passages. Additions are highlighted in green, deletions in red. Ideal for editing, translation, and review.

100% local · No server uploads · Fully private

How to use?

  1. 1

    Paste two text blocks

    Enter the source text (A) on the left and the revised version (B) on the right.

  2. 2

    Click to compare

    Click the "Compare text differences" button. The tool will highlight added and deleted words.

  3. 3

    View differences

    Green highlights show content added in B, and red strikethrough shows content deleted from A.

FAQ

Will text content be uploaded to the server?

No. All comparison processing is done locally in the browser, and your text never leaves your device.

What scenarios is this tool suitable for?

Suitable for text editing, translation review, contract revision and review, article version comparison, and other scenarios where you need to quickly spot differences between two texts.

What is the maximum text length for comparison?

For larger texts (tens of thousands of words or more), comparison may take a few seconds. For the best experience, compare in sections.

Can I compare mixed Chinese and English text?

Yes. The tool supports comparing any Unicode text, including mixed Chinese and English, Arabic, Japanese, and more.

Need AI to translate a full document while fully preserving the layout?

SimplifyAI supports AI translation for complex documents such as InDesign and Word, with zero layout loss.

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