STEP 01Add files
Choose up to 500 files to compare; contents are not uploaded.
Free forever · Nothing is deleted
Content-Level Duplicate File Finder
No filename guessing: narrow candidates by byte size, then calculate content fingerprints and report only byte-identical files.
Start using this tool
File contents stay local Review first, then run
STEP 02Compare exactly
Prefilter by byte size, then calculate SHA-256 fingerprints.
STEP 03Review & download
Review byte-identical groups and export a CSV report; nothing is deleted.
Local SHA-256 comparison · No uploadsFree forever · No conversion credits
Choose files to compare
Files are grouped by size before candidate hashes are calculated
Comparison only—nothing is deleted automaticallyPractical use cases
Less mechanical sorting, more focus
Downloads folders
Find duplicate downloads even when filenames differ.
Project delivery
Check whether assets gathered from different folders are identical.
Storage cleanup
Export a report for human review; the site never auto-deletes important files.
FAQ
Questions before you begin
Why not compare filenames?
Same-name files can differ and differently named files can match; SHA-256 compares actual bytes.
Will duplicates be deleted automatically?
No. The tool only reports matches and offers a CSV report.
Does this use conversion credits?
No. Duplicate detection is free forever and uses no conversion credits.