Encoding & Security
Hash, encode, and lock down data — all client-side.
Base64 Encode / Decode
Securely encode or decode strings to and from Base64 directly in your browser.
Hash Generator
Generate MD5, SHA-1, SHA-256, SHA-384, and SHA-512 hashes for text and files. Verify file integrity instantly.
Password Generator
Generate cryptographically secure passwords, passphrases, and PINs with strength scoring and crack-time estimates.
Why Use Encoding & Security Tools?
Encoding and security are foundational skills for every developer. Whether you are embedding credentials in HTTP headers, generating hash digests for file integrity checks, or creating strong passwords for new accounts, you need tools that are fast, accurate, and trustworthy. Unfortunately, many online encoding and security tools upload your data to their servers — which is exactly what you do not want when handling sensitive information.
Our Encoding & Security tools are built to solve this problem. Everything runs entirely in your browser using the Web Crypto API and other native browser features. When you encode a password to Base64, generate an SHA-256 hash, or create a strong random password, your data never touches a server. This is critical for passwords, API keys, personal data, and any other sensitive information that should never leave your device.
Each tool is designed to be both powerful and simple. Base64 Encoder handles full UTF-8 including emojis and international characters. Hash Generator supports MD5, SHA-1, SHA-256, SHA-384, and SHA-512 with instant results. Password Generator creates cryptographically secure passwords up to 128 characters with customizable character sets, strength scoring, and crack-time estimates.
Who Are These Tools For?
These tools are essential for software developers, security engineers, DevOps professionals, system administrators, and anyone who takes privacy seriously. Backend developers use Base64 encoding for HTTP Basic Auth headers and JWT payloads. Security engineers use hash generators to verify file integrity and check for duplicates. System administrators generate strong passwords for server accounts and API keys. And every internet user benefits from a reliable, offline password generator that does not phone home with their newly created secrets.
Frequently Asked Questions
Are the generated passwords and hashes truly random and secure?
Yes. Our password generator uses the browser's Web Crypto API (crypto.getRandomValues), which provides cryptographically secure random numbers. Hash functions use the native SubtleCrypto API for SHA algorithms, producing identical results to any standard cryptographic library.
Is my data sent to any server when using these tools?
No. All encoding, decoding, hashing, and password generation happens 100% in your browser. No data is ever transmitted to our servers or any third party. You can verify this by opening your browser's network tab while using the tools.
Can I trust these tools with sensitive passwords and API keys?
Yes, because nothing leaves your device. However, we always recommend generating passwords and keys on a trusted device and storing them securely in a password manager like 1Password, Bitwarden, or iCloud Keychain.
Why should I use Base64 encoding?
Base64 is used to safely transmit binary data over text-based protocols like JSON APIs, HTTP headers, and email attachments. It is also used in HTTP Basic Authentication, embedding images in HTML as data URIs, and encoding JWT token payloads.