Tools

Encoding, signing and key-generation utilities. Press ⌘K to search. Click the star on a tool to add it here.

Encoding/Decoding

Base64 encode / decodeConvert text to and from Base64, with a URL-safe option and selectable text encoding.

URL encode / decodePercent-encode a string for URLs, or decode one back to plain text.

HMAC generatorSign a message with a secret key and get matching Python, Node and Java code.

JWT decode & generateInspect a token's header and payload, verify its signature, or build a new one.

RSA key generatorGenerate an RSA keypair as PEM or OpenSSH output, then encrypt and decrypt text with it.

File Checksum GeneratorCompute MD5, SHA-1, SHA-256, and SHA-512 checksums for files up to 4GB. Progress and speeds are updated in real-time.

Coin tossFlip a coin and watch the histogram converge toward 50/50 as trials add up.

Dice rollRoll a 6-sided die and verify the random distribution with a live histogram.

Password generatorGenerate secure random passwords with customizable length, numbers, symbols, and casing.

UUID GeneratorGenerate Universally Unique Identifiers (UUID v4, v5, and v7) in bulk, with support for seeds and namespaces.

JSON Formatter & ValidatorFormat, minify, sort keys, and convert JSON to YAML. Navigate nodes interactively to extract JSONPaths.

YAML Formatter & ValidatorFormat, sort keys, validate, and convert YAML to JSON. Navigate nodes interactively to extract JSONPaths.

Text DiffCompare two texts line-by-line and character-by-character with Split and Unified layout modes.

Markdown to PDFTurn a Markdown file into a typeset PDF. Mermaid fences render as diagrams, tables as tables, and code fences get syntax highlighting.

More tools are added over time — check back soon.