Developer Tools That Respect Your Privacy
Free online utilities for developers. All tools run entirely in your browser — your data never touches our servers.
JSON Formatter
Format, beautify, and validate JSON
Use toolBase64 Encode/Decode
Encode and decode Base64 strings
Use toolRegex Tester
Test and debug regular expressions
Use toolURL Encoder/Decoder
Encode and decode URLs
Use toolJWT Decoder
Decode and inspect JWT tokens
Use toolHash Generator
Generate SHA-1, SHA-256, SHA-512 hashes
Use toolDiff Checker
Compare two texts side by side
Use toolUnix Timestamp
Convert Unix timestamps to dates
Use toolUUID Generator
Generate random UUIDs
Use toolHTML Encoder/Decoder
Encode and decode HTML entities
Use toolJSON to TypeScript
Generate TypeScript interfaces from JSON
Use toolYAML to JSON
Convert between YAML and JSON
Use toolSQL Formatter
Format and beautify SQL queries
Use toolMarkdown Preview
Preview Markdown as HTML
Use toolJSON to CSV
Convert JSON arrays to CSV format
Use toolCron Parser
Description
Use toolColor Converter
Convert between HEX, RGB, HSL
Use toolQR Code Generator
Generate QR codes for URLs and text
Use toolImage to Base64
Convert images to Base64 data URIs
Use toolJS/CSS Minifier
Minify JavaScript and CSS code
Use toolOpenAPI Viewer
Visualize OpenAPI/Swagger specifications
Use toolGraphQL Formatter
Format and validate GraphQL queries
Use toolEnv Editor
Visual .env file editor
Use toolJSON Schema Validator
Validate JSON against schemas
Use toolK8s YAML Validator
Validate Kubernetes manifests
Use tool