Generate hashes, verify checksums, create unique IDs — 100% private, running entirely in your browser.
Generate MD5, SHA-1, SHA-256, SHA-512 cryptographic hashes for text and files. Essential for password hashing and data verification.
Verify file integrity with SHA-256, SHA-512 checksums. Compare downloads against official hashes to detect tampering.
Generate UUID v1, v4, v5 identifiers. Bulk generation up to 1000 at once. Built-in validator for UUID verification.
Encode text to Base64 for safe transmission or decode Base64 strings. Full UTF-8 support for international characters.
Create strong, random passwords with customizable length and character sets. Generate cryptographically secure passwords locally.
All cryptographic operations happen in your browser. Nothing is sent to our servers—ever.
Uses Web Crypto API with SHA-256, SHA-512, and other FIPS-approved algorithms.
Perfect for verifying downloads, generating secure tokens, and file integrity checks.
When downloading software, ISOs, or packages, publishers provide SHA-256 checksums. Use our File Checksum Verifier to confirm your download is authentic and hasn't been tampered with.
Unlike online hash generators that upload your data to servers, Filemint processes everything locally. Perfect for sensitive data, corporate environments, and compliance requirements where data must not leave your device.
Keep records of file checksums when creating backups. Periodically verify that backup files haven't degraded or been corrupted over time. Catch problems before you need to restore from backup.
Everything you need to know about our security tools
Absolutely! All our security tools run entirely in your browser—nothing is ever sent to our servers. This makes them perfect for hashing passwords, verifying file checksums of sensitive downloads, and generating UUIDs for production applications.
For most security purposes, use SHA-256 or SHA-512. These are considered cryptographically secure. MD5 and SHA-1 are faster but have known vulnerabilities—use them only for non-security purposes like quick checksums or legacy compatibility.
Yes! Our File Checksum Verifier lets you calculate SHA-256, SHA-512, and other hashes for any file. Compare the result against the official hash provided by the software publisher to verify your download hasn't been tampered with.
Yes! Our UUID generator uses the Web Crypto API which provides cryptographically secure random number generation. The UUIDs are fully RFC 4122 compliant and suitable for database primary keys, session tokens, and any production use case.
Yes! Once the page loads, all security tools work completely offline. This is especially important for security-sensitive operations where you may want to disconnect from the internet before processing sensitive data.
Our Password Generator creates cryptographically random passwords using the Web Crypto API. With the default settings (16 characters, mixed case, numbers, and symbols), generated passwords have over 100 bits of entropy—virtually impossible to brute force.
Discover our complete collection of privacy-first tools
