WEB CRYPTO · SHA-256 · LOCAL-FIRST
Find duplicate files on your device
Choose multiple files or a folder. Your browser uses your CPU to locate files with identical content. No hidden filesystem scans and no automatic deletion.
Choose 2–500 files, each up to 128 MB. Only same-sized candidates are hashed with SHA-256 to reduce unnecessary work.
Files with identical content
Download CSV report ↓Only files you select are read locally. Web Crypto calculates SHA-256 in your browser; nothing is uploaded to Zoryvia. The site still downloads static HTML and worker scripts.
This utility reports content duplicates but does not move, overwrite, or delete files. Review results before manually removing copies. Same filenames can have different contents; different names can have identical contents. SHA-256 collision risk is negligible but not mathematically zero.