Tools
Fileraz
Tools
Fileraz
Try jpg to png, compress image, pdf…
Developer tool
Your files never leave your device
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Work starts the moment you drop a file
No daily limit, no sign-up, no watermark
The first line supplies the object keys, so every row after it maps onto those names. Empty header cells become awkward keys, and leading or trailing spaces are trimmed from each value before it is written into the JSON.
This is a straight comma split, not an RFC 4180 parser. Commas inside quoted fields, embedded newlines, and escaped quotes are not handled the way Excel or a dedicated library would. For those, clean the export or parse it in your own code.
The spreadsheet is read and converted in this browser tab and never sent to a server, so customer lists or internal exports do not leave your machine. Close the tab and nothing is retained.
Runs in your browser — nothing transmitted.
Yes, with the JSON to CSV tool — paste an array that starts with [ and it flattens the objects back to rows.
A UTF-8 byte-order mark on the first cell can attach to the first key. Re-save the file without a BOM in your editor and reconvert.
No. Parsing happens in the page with JavaScript; the file is never transmitted.
That is the promise behind every tool here. Files are read in your browser tab, processed there, and discarded when you close it — never uploaded to our servers.