UUUP Tools

Encoding & Decoding

File Checksum — Local SHA-256 / 384 / 512 Digests

Compute SHA-256, SHA-384, and SHA-512 digests for selected files entirely in the browser. File contents are not uploaded. Useful for verifying downloads, images, and release artifacts against published checksums.

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ChecksumHashFiles
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Copy this tool URL or open the system share sheet on a supported device.

Use cases

  • Verify digests published on open-source release pages
  • Compare a local installer against an official checksum
  • Review digests for multiple files in one pass

How to use

  1. Drop or choose local files
  2. Wait for the browser to finish hashing
  3. Copy an individual checksum result

Example input and output

File

example.txt (choose locally)

Output

SHA-256 / SHA-384 / SHA-512 hex digests

FAQ

Is MD5 supported?

No. This tool uses Web Crypto for SHA-256, SHA-384, and SHA-512 only.

Are files uploaded?

No. Reading and hashing stay on the device. The tool works offline.

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Base64 Encode/Decode

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Encode and decode Base64 in the browser, with standard and URL-safe variants, automatic direction detection, and optional file-to-Base64 conversion. Useful for API debugging and local data prep.

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