Format, minify, validate, search, and collapse JSON in your browser.
No. Formatting, minifying, and validation run entirely in your browser. Nothing is uploaded to a server.
Common causes are trailing commas, single quotes, comments, unquoted keys, or truncated paste. Use the line number in the error to jump to the problem. Fix that spot and Validate again.
Format adds indentation and line breaks so humans can read the structure. Minify removes unnecessary whitespace so the payload is smaller for network or storage use. Both require valid JSON first.
Yes within the character limit. Past that limit the tool blocks processing to avoid freezing the tab. For multi‑megabyte files, minify in chunks or use a desktop editor designed for huge documents.
Yes. Copy replaces the current clipboard with the editor text. If clipboard permission is denied, select the text and copy manually instead.
Open Tree view after your JSON validates. Click chevrons to collapse objects or arrays. Search highlights matching keys and values and expands the branches that contain hits.