Get the checksum of a file

MD5, SHA-1, SHA-256, SHA-512 or BLAKE2 of anything you upload, to verify a download matched.

Drop a file here, or choose one.

application/octet-stream · .txt · .pdf · .png · .jpg · up to 4 MB · processed in memory and never stored · or paste with Ctrl+V

1 credit

What it does

Also called: get the checksum of a file · calculate a sha256 hash · verify a file with md5.

Use it from your own code

The same endpoint this page calls — no daily cap, 1 credit a call either way.

POST /v1/core/hash-file

curl -X POST "$DOATHING_API/v1/core/hash-file" \
  -H "x-api-key: $DOATHING_KEY" \
  -H "content-type: application/json" \
  -d '{"file": {"filename": "notes.txt", "content_type": "text/plain", "data_b64": "aGVsbG8="}}'

MD5, SHA-1, SHA-256, SHA-512 or BLAKE2 of anything you upload, to verify a download matched.

Compute md5, sha1, sha256, sha512 and blake2b digests of an uploaded file.

Input

Send a file object with base64 data_b64, its content_type and a filename. Accepted types: application/octet-stream, text/plain, application/pdf, image/png, image/jpeg.

The declared type is not trusted — the bytes are sniffed and a contradiction is rejected rather than corrected.

Response

The result carries your remaining balance alongside it, so you can track spend without a second call.

{
  "sha256": "2cf24dba5fb0a30e26e83b2ac5b9e29e…",
  "size_bytes": 5,
  "request_id": "37f01edb-0163-42a1-ac51-0acaef979800",
  "credits_remaining": 96
}

Cost

1 credit per call, whether it is run from the site or from the API — the credential differs, the price does not. A new account starts with 20 credits.

A rejected request still costs a credit: the authorizer decrements before the tool validates. A call rejected for a missing or invalid key is free.

Parameters

Generated from the endpoint’s own validation, so this is exactly what it accepts. A body field goes at the top level; an option goes inside options.

Name	In	Type	Default	Notes
algorithms	options	string[]	—	Any of md5, sha1, sha256, sha512, blake2b. All by default. from md5, sha1, sha256, sha512, blake2b