File hash checker
Calculate a SHA hash for a file in your browser to compare downloads or verify file integrity.
Useful for: Check whether a file matches a published checksum without uploading the file anywhere.
Rupeka tools
Utility tools
File hash, ZIP, and everyday browser utilities that do not need login or paid APIs.
ZIP/unzip
Create ZIP archives or inspect and extract ZIP files locally without uploading their contents.
Useful for: Group form documents into one archive or safely inspect a received ZIP using browser-only processing.