Encoding & Security Tools
Encode, decode, hash and generate identifiers. Convert Base64, Base32, hex, URL encoding, HTML entities and Unicode escapes; create MD5, SHA and HMAC digests and bcrypt hashes; encrypt text with AES-GCM; decode or create test JWTs; and generate UUIDs, ULIDs and NanoIDs. Cryptographic work uses the browser's Web Crypto API, keys never leave your device, and each page explains what the tool does and does not guarantee, such as unverified JWT signatures.
19 Encoding & Security Tools
Most popular first.
- Base64 EncoderEncode text or any file to Base64.Open Tool
- Base64 DecoderDecode Base64 to text or a downloadable file.Open Tool
- URL EncoderPercent-encode text or a full URL safely.Open Tool
- URL DecoderDecode %XX text and break a URL into parts.Open Tool
- JWT DecoderDecode a JWT header and payload (no verification).Open Tool
- UUID GeneratorGenerate v4 and v7 UUIDs, and check a UUID.Open Tool
- Hash GeneratorMD5, SHA-1, SHA-256, SHA-384 and SHA-512 hashes.Open Tool
- HTML Entity EncoderConvert text to HTML entities.Open Tool
- HTML Entity DecoderConvert HTML entities back to text.Open Tool
- Bcrypt GeneratorCreate and verify bcrypt password hashes.Open Tool
- HMAC GeneratorHMAC-SHA256, SHA-384 and SHA-512 signatures.Open Tool
- AES Encrypt/DecryptEncrypt text with a passphrase (AES-256-GCM).Open Tool
- String EscaperEscape text for JSON, JS, HTML, CSV and SQL.Open Tool
- Unicode EscapeConvert text to and from \uXXXX and &#x; escapes.Open Tool
- Hex Encoder/DecoderConvert text to hexadecimal bytes and back.Open Tool
- Base32 Encoder/DecoderEncode and decode RFC 4648 Base32.Open Tool
- Punycode ConverterConvert international domain names to xn-- form.Open Tool
- ULID / NanoID GeneratorGenerate sortable ULIDs or compact NanoIDs.Open Tool
- JWT GeneratorCreate HS256 test tokens for development.Open Tool
Frequently Asked Questions
What can I do with these Encoding & Security tools?
Base64, URL, hashes, HMAC, bcrypt, AES, UUIDs and JWTs.
Which Encoding & Security tools are most popular?
The most used are Base64 Encoder, Base64 Decoder, URL Encoder. Tools are listed here in order of popularity.
Do I need to install anything or sign up?
No. Each tool opens in your browser, works without an account and is free to use. Files and text are processed on your device unless a tool clearly states otherwise.
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