Browser signing

Protect a file with content credentials.

The same POST /api/v1/sign call your pipeline makes — right here in the browser. Signed in? Just drop a file. Otherwise paste a krsd_ key and download the signed copy.

API key

Stays in this tab — sent only to the API as a Bearer header. Sign in to skip the key.

Author (optional)

Title (optional)

JPEG, PNG, WebP, AVIF, TIFF, GIF, MP4, MOV, MP3, WAV, or FLAC — up to 64 MB. Failed signs are never charged.

Drop a file here, or click to browse