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Compare JSON files online

Compare API responses, config files, package.json, or data exports. JSON syntax highlighting makes structural differences immediately obvious. Runs entirely in your browser — nothing is uploaded to any server.

L: 0 lines  |  R: 0 lines Paste or upload JSON files, then click Compare
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Compare JSON files online — fast, free, and private

Use TextFileCompare.com to compare JSON files directly in your browser. Compare API responses, config files, package.json, or data exports. JSON syntax highlighting makes structural differences immediately obvious. No account required, no data uploaded — your code never leaves your device.

Common use cases

API response diffing

package.json version comparison

Config file validation

Data export comparison

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