CONVERTCRAFT V3.0: THE NEXT GENERATION

Premium. Private. Pure Performance.

Experience Sub-2s processing speeds with our brand-new V3.0 engine. We've rebuilt everything to give you a Prime Experience where your files never leave your device.

WHY WE ARE DIFFERENT:

  • WASM Powered: Every conversion runs locally on your hardware.
  • Absolute Privacy: Your files are yours. No cloud, no tracking, no compromises.
  • Built for You: We've scaled this platform entirely out-of-pocket for a global creator community.

KEEP THE MISSION ALIVE: 🛡️

Running this infrastructure at this scale costs serious money. We don't sell your data, and we don't run annoying ads. We rely solely on users like you.

If ConvertCraft saved you time or kept your data safe today, help us keep it free and private for everyone.

[ SPEED: INSTANT ][ SWITCH: <100ms ][ LOAD: <2 SEC ]PRIVACY: 100%All systems OK

❤️ Support Our Mission / Donate

💎 Support the Mission ($4.99/mo)☕ One-time Donation

Every dollar keeps another 1,000 users private.

Security

Understanding File Encryption: AES, RSA, and Browser-Based Crypto

A beginner-friendly explainer on file encryption algorithms, how they work, and how to encrypt files securely in your browser.

File encryption transforms your data into an unreadable format that can only be reversed with the correct key. It is the foundation of digital privacy — protecting everything from personal photos to corporate contracts.

The two main encryption families are symmetric (AES) and asymmetric (RSA). AES uses the same key for encryption and decryption, making it fast and ideal for file encryption. RSA uses a key pair (public + private) and is better suited for secure communication.

AES-256-GCM is the current gold standard for file encryption. The "256" refers to the key length in bits, making brute-force attacks computationally impossible. GCM mode adds authentication, detecting any tampering with the encrypted data.

Modern browsers include the Web Crypto API, which provides hardware-accelerated cryptographic operations. This means you can encrypt and decrypt files directly in your browser at near-native speed — no software installation needed.

ConvertCraft's File Encrypt tool leverages the Web Crypto API to perform AES-256-GCM encryption entirely client-side. Enter a password, drop your file, and receive an encrypted output that only you can decrypt. Your original file never leaves your device.