Deduplicate Files with Hashing

Identify duplicate files by comparing their SHA-256 hashes — identical content produces identical hashes.

No cal iniciar sessió

Tip: SHA-256 and SHA-512 are cryptographically secure. SHA-1 is legacy and no longer recommended for security-sensitive use. All hashing runs locally in your browser — files and text are never sent anywhere.

Deduplication tips

🔁

Two files with the same SHA-256 hash have identical content, regardless of filename or modification date. Use this to find exact duplicates.

📁

Hash each version of a document to see if two "different" files are actually the same. Useful for auditing shared drives with redundant copies.

💡

For large-scale deduplication across thousands of files, use a command-line tool that hashes in bulk. This tool is best for spot-checking.

🖼️

Note: perceptual similarity (visually similar images) requires specialised tools. SHA-256 only detects exact byte-for-byte duplicates.

Com funciona

Introdueix

Enter your data into the tool above. Everything stays local to your browser.

Processa

The tool processes your data instantly in your browser using JavaScript. No server, no waiting.

Descarrega

Get your result instantly. Nothing is stored after you leave the page — complete privacy.

Per què usar la nostra?

✓Completament gratuït — sense costos ocults, mai

✓No cal compte, correu electrònic ni inici de sessió

✓Els fitxers no surten mai del teu dispositiu

✓Sense cap límit de mida de fitxer

✓Sense marques d'aigua en cap sortida

Also check out…

✅

Verify File Integrity with Hash

Generate a SHA-256 checksum for a downloaded file

🔒

Generate Checksum for Data Integrity

Create SHA-256 hashes of text or files to detect c

🔐

Understand Password Hashing

Learn how cryptographic hashing works by seeing ho

✍️

Generate Hashes for API Request Signing

Understand HMAC signing by computing the hash of y

Preguntes freqüents

Back to Hash Generator