JSON Formatter

Format, validate and minify JSON — pretty-print it or collapse it to one line.

Indent

Parsed and formatted in your browser — nothing is uploaded.

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JSON Formatter — frequently asked questions

Is my JSON sent to a server?+

No. It's parsed and formatted entirely in your browser with JSON.parse.

It says invalid JSON — why?+

The message shows where parsing failed. Common causes: trailing commas, single quotes, or unquoted keys — none of which are valid JSON.

Can it handle large files?+

Yes, within your browser's memory. Very large files may be slow to render.

Adakah anda memuat naik fail saya ke pelayan?+

Tidak — setiap alat di sini memproses fail anda sepenuhnya pada peranti anda, dan tiada apa dimuat naik ke pelayan. Satu-satunya pengecualian ialah alat AI, yang menghantar teks yang diekstrak (bukan fail) ke Claude untuk melakukan kerjanya.

Adakah terdapat had saiz fail?+

Kami tidak mengenakan had buatan, tetapi kerana pemprosesan berlaku dalam pelayar anda, fail yang sangat besar (500+ MB atau 1,000+ muka surat) dihadkan oleh memori peranti anda, bukan oleh kami.