CSV to JSON viewer and editor

Import a CSV (up to 200 MB, max 50,000 rows loaded). The left panel is a read-only grid; the right panel is JSON keyed by your column headers. Edit JSON and apply to refresh the grid, or reset JSON from the current CSV.

Header row required, same rules as the main CSV viewer.

Your file is parsed on this device; we do not send it to our servers. Your edits are saved in this browser's local storage so you can pick up where you left off. Clear removes them from this device. This site may show ads. Privacy · Terms.