Tools
Fileraz
Tools
Fileraz
Try jpg to png, compress image, pdf…
Developer tool
Your files never leave your device
Check your Network tab and see
Work starts the moment you drop a file
No daily limit, no sign-up, no watermark
Do not paste live payment or production API secrets. Rotate anything you tested here if it was real.
UTF-8 via TextEncoder. Binary secrets as hex are not parsed — type the raw string.
SubtleCrypto is part of the browser, so the message and secret are signed locally and no request is made to any server.
Runs in your browser — nothing transmitted.
No. This page fixes the digest at SHA-256, which is the common choice for HMAC. For other algorithms you would call SubtleCrypto with a different hash in your own code.
This tool only prints a hex digest. Comparing it against an expected value is up to you — use a constant-time compare on the server when verifying signatures.
No. Signing happens locally via Web Crypto, but still avoid pasting production keys.
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.