Paste JSON or open a file to pretty-print, minify, or validate it, with errors that point at the exact failure position. Everything is parsed locally, so payloads containing tokens or customer data stay put.
Paste raw JSON or open a .json file and choose how you want it back: pretty-printed with two spaces, four spaces, or tabs for reading and code review, or minified to a single line for embedding in configs and shrinking payloads. Every input is validated on the way in — if the document is malformed, you get an error message that names the problem and points at the position where parsing failed, instead of the generic failure some tools show.
Most broken JSON fails for a handful of reasons: a trailing comma after the last item, single quotes instead of double quotes, an unquoted key, or a stray character carried over from a log line. Because the validator reports where it stopped, you can jump to that spot rather than scanning the whole document. Once the input parses, copy the result to your clipboard or download it as a file.
The JSON that ends up in a formatter is rarely dummy data. It is API responses carrying bearer tokens and session IDs, webhook payloads with customer emails, and database exports. Pasting that into a formatter that posts it to a backend quietly hands sensitive data to a third party. On SafeFileConvert, parsing happens with JavaScript in your own tab — no request carrying your JSON is ever made, nothing is logged, and there is no account, usage cap, or paywall around any option.
No. Parsing, formatting, and validation all run inside your browser, and the tool makes no network call with your data — which is why it is safe for payloads containing tokens or personal information.
It explains why parsing failed and gives the position where the parser stopped, so you can go straight to the offending character rather than hunting through the file.
You can pretty-print with two spaces, four spaces, or tabs, or minify to a single line with all insignificant whitespace removed.
No — it validates and reports rather than rewriting your data. Automatic repair can silently change meaning, so the tool shows you where the problem is and lets you decide the fix.