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Developer Tools

Free client-side tools for developers. Everything runs in your browser — nothing is sent to a server.

Converters

JSON / YAML Converter
Convert between JSON and YAML formats
JSON / CSV Converter
Convert between JSON and CSV formats
JSON / XML Converter
Convert between JSON and XML formats
Base64 Encoder / Decoder
Encode and decode Base64 strings
HTML Encoder / Decoder
Encode and decode HTML entities
URL Encoder / Decoder
Encode and decode URL components
ASCII / Unicode Lookup & Converter
Look up and convert ASCII and Unicode characters
Color Format Converter
Convert between HEX, RGB, and HSL color formats
String Case Converter
Convert strings between camelCase, snake_case, kebab-case, and more

Formatters

JSON Formatter / Minifier
Format, prettify, or minify JSON data
SQL Formatter / Beautifier
Format and beautify SQL queries
GraphQL Query Formatter
Format and prettify GraphQL queries
CSS Minifier / Beautifier
Minify or beautify CSS stylesheets
SVG Optimizer / Minifier
Optimize and minify SVG markup
Markdown Previewer
Write Markdown and preview the rendered output live

Encoding & Decoding

Escape / Unescape Tool
Escape and unescape JSON strings, regex patterns, and SQL literals

Cryptography

JWT Decoder
Decode and inspect JSON Web Tokens
JWT Builder
Build and sign JSON Web Tokens
Bcrypt Hash Tester
Hash passwords and verify bcrypt hashes
HMAC Generator
Generate HMAC signatures with various algorithms
Hash Generator
Generate MD5, SHA-1, and SHA-256 hashes
Password Generator
Generate secure random passwords with configurable rules

Generators

UUID / ULID Generator
Generate UUIDs (v4, v7) and ULIDs
Lorem Ipsum Generator
Generate placeholder text in various formats
CRON Expression Builder
Build and describe cron schedule expressions
Fake Data Generator
Generate realistic fake data for testing
.gitignore Generator
Generate .gitignore files from common templates

Network & URLs

URL Parser
Parse and inspect URL components
IP Address & CIDR Parser
Parse IP addresses and CIDR ranges
DNS Record Lookup
Look up DNS records for any domain
HTTP Status Code Reference
Browse and search HTTP status codes
Webhook Request Inspector
Inspect and debug incoming webhook requests

Validation & Schema

JSON Schema Generator
Generate JSON Schema from sample JSON data
Regex Tester
Test and debug regular expressions with live matching
Semver Validator & Range Tester
Validate semantic versions and test version ranges
Docker Compose Validator
Validate and lint Docker Compose files

SBOM

SBOM Viewer / Explorer
Parse and explore CycloneDX or SPDX software bill of materials
SBOM Validator
Validate SBOM documents against CycloneDX or SPDX JSON schemas
SBOM Format Converter
Convert between CycloneDX and SPDX SBOM formats
SBOM Diff / Comparator
Compare two SBOMs to find added, removed, or changed components
SBOM Generator
Generate an SBOM from package.json, requirements.txt, and other manifests

Text & Strings

Character & Word Counter
Count characters, words, sentences, and get a readability score
Text Diff
Compare two texts with word-level diff highlighting
JSON / Text Diff Viewer
Compare JSON or text side by side with diff highlighting

Web & Meta

Meta Tag Previewer
Preview Open Graph and social media meta tags
OpenGraph Image Tester
Test how a URL appears when shared on social media