Text Compare Online — Compare Two Texts Side by Side
Compare two blocks of text side by side and highlight every difference. Paste the original and the changed text to see added, removed, and modified lines instantly — free and private.
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How to use Text Compare
- Paste the original text on the left and the changed text on the right.
- Differences are highlighted automatically, line by line.
- Use Swap to reverse the sides, or Clear to start over.
Features
Side-by-side diff
Compare two blocks of text and spot every change instantly.
Line-by-line highlighting
Added, removed, and modified lines are color-coded.
Any text
Compare code, logs, prose, config — anything, not just JSON.
100% private
Your text is compared in your browser and never uploaded.
What is Text Compare?
A text compare tool highlights line-level differences between two versions of any text — code, logs, prose, or configuration. JSON Reader compares both sides in your browser and marks each change inline, with no upload required.
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Frequently Asked Questions
Everything you need to know about JSON Reader
Any two blocks of text — source code, logs, essays, configuration, or data. The tool highlights every line-level difference.
Yes. The comparison runs entirely in your browser; nothing is sent to a server.
Yes. Both sides stay editable, so you can tweak the text and watch the diff update.