Convert your files through an API or in the browser.
Send a file, name the target: ConvertChester returns the converted document, with the SHA-256 fingerprint of the file you sent and of the file produced. The source format is read from the bytes, never from the extension — and a refusal is always explained, never billed.
Nothing is stored: the file is processed in memory, returned, forgotten.
- Free, no account needed
- No file retained
- One API, one call
Formats served today — any pair of distinct formats converts:
Documents, audio and video arrive as additional engines behind the same API.
How it works
1.Upload
One file, up to 10 MB. The real format is detected from its bytes.
2.Convert
The target is requested with `to`. Served pairs are those of GET /v1/formats.
3.Download
The converted document comes back in the response, base64-encoded, with its fingerprint.
Built for developers
One multipart call, one JSON response. The same contract from the browser, a script or your backend.
OpenAPI →curl -X POST https://api.convertchester.com/v1/convert \
-F "file=@logo.png" -F "to=jpeg"Zero retention, by construction
The file is processed in memory and never written to disk. Logs carry only its SHA-256 fingerprint and size — never its name, never its content.
Read the security policyStart now
The converter is free and needs no account. The API takes five minutes to adopt.