Messy JSON.
Made readable.
Format or minify JSON and identify invalid syntax before copying or downloading.
JSON Formatter
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Format or minify JSON and identify invalid syntax before copying or downloading.
JSON parsing rejects comments, trailing commas and single-quoted strings. JavaScript numbers can round integers beyond the safe integer range; keep large IDs as strings.
Choose your input, set the available options and create the result. Review before downloading. Image exports may remove metadata and color profiles; animated images become still images. Text inputs are limited to 1,000,000 characters.
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Is my input uploaded or saved?
No. The tool processes input in this browser without persistent storage. The host receives normal page requests. See the privacy notice.
Does it require a subscription?
No. Converting, copying and downloading are free without a login.
What should I check before using the result?
JSON parsing rejects comments, trailing commas and single-quoted strings. JavaScript numbers can round integers beyond the safe integer range; keep large IDs as strings.