Developer tools that work locally.

Fast, private, client-side utilities for everyday development.

100% client-side — your data never leaves your browser
URL & LinksCryptographyEncoding & TokensText & StringsData FormatCode & FormattingReferenceCSS ToolsUtilities

Developer Tools

URL & Links

Short URL

Create and track short links

QR Code

Generate QR codes from any text

URL Parser

Parse, build, and inspect URLs

Cryptography

Hash

MD5, SHA-256, SHA-512 hashing with file upload

AES

AES-GCM encryption with password or raw key

RSA

RSA key generation, encrypt/decrypt, sign/verify

HMAC

HMAC-SHA256/384/512 message authentication

PBKDF2

PBKDF2 password hashing and verification

JWT Decoder

Decode JWT tokens and inspect claims

Encoding & Tokens

Encode & Decode

Base64, URL, Hex, Binary, Base32 encoding

UUID Generator

Generate UUID v4, v7, and NIL

Text & Strings

Case Converter

Convert between camelCase, snake_case, kebab-case and more

Word Counter

Count characters, words, sentences, and reading time

Lorem Ipsum

Generate placeholder text for layouts and testing

Slug Generator

Create URL-safe slugs from any text

Data Format

YAML ↔ JSON

Convert between YAML and JSON formats

JSON Diff

Compare two JSON payloads and highlight differences

JSON ↔ CSV

Convert between JSON and CSV with RFC 4180 compliance

Code & Formatting

Code Editor

Syntax-highlighted code editor

Formatter

Beautify or minify JSON, XML, YAML, TOML

JSON → TypeScript

Generate TypeScript types from JSON

Regex Tester

Test, explain, and debug regex patterns

Reference

HTTP Status

Searchable reference of HTTP status codes with descriptions

Regex Cheatsheet

Quick reference for regex syntax with examples

MIME Lookup

Look up MIME types by extension or vice versa

Unicode Search

Search Unicode characters and get code points, HTML entities, CSS escapes

CSS Tools

Gradient Generator

Build CSS linear and radial gradients with live preview

Box Shadow Generator

Design CSS box shadows with visual controls

Utilities

Password Generator

Random passwords and passphrases

Timestamp Converter

Convert timestamps across formats and timezones

Color Picker

Color conversion, contrast, and palettes

Base Converter

Convert between binary, octal, decimal, and hexadecimal

Cron Builder

Build and decode cron expressions with next-run preview

CIDR Calculator

IPv4 CIDR network, broadcast, and host range calculator

Image to Base64

Convert images to base64 data URIs