File Hash Checker Guide
Reference for calculating SHA file checksums, comparing release artifacts, and understanding file hash integrity limits.
Quick answer
Use the File Hash Checker to calculate SHA-1, SHA-256, SHA-384, or SHA-512 checksums for a selected file.
What this tool does
The tool helps compare a local file against an expected checksum. It is useful for release artifacts, downloads, QA packages, backups, and support debugging.
Supported input
- Local file selection
- SHA-1
- SHA-256
- SHA-384
- SHA-512
- Copy-ready checksum output
Data handling and processing behavior
Processing is handled in the browser for this tool based on the current public implementation. Avoid selecting sensitive files unless you have reviewed the implementation and your own data handling requirements.
Step-by-step use
- Select a file
- Choose the hash algorithm
- Calculate the checksum
- Copy the output
- Compare it against the expected value from a trusted source
Review example
For a release artifact, calculate SHA-256 and compare it with the checksum published by the build pipeline or release note. Record the file name, version, algorithm, and expected hash together. If the bytes change because the file was recompressed or re-exported, calculate a new checksum instead of reusing the old one.
Practical handoff note
For file hash handoff, copy the algorithm name, hash value, file source, and date checked together. A hash without the algorithm is ambiguous, and a hash without the expected source is hard to trust. Use hashes for integrity comparison, not as proof that a file is safe, legal, or free of malicious content.
Common errors
Comparing different algorithms. SHA-256 and SHA-512 are not interchangeable.
Treating a hash as a safety scan. A checksum confirms byte-level matching against an expected value; it does not inspect file behavior.
Hashing a different export. Recompressing or re-exporting a file changes bytes and therefore changes the hash.
Limits
The tool calculates hashes. It does not certify file origin, detect malware, or prove that a file is appropriate to run.
Next steps
- Hash Generator — calculate hashes for text values
- Password Generator — generate random passwords with clear rules
- UUID Generator — create identifiers for release notes or fixtures
- Developer Data Cleanup Workflow — prepare hashes, identifiers, and handoff notes without mixing them with secrets