Developer Tools

Code formatters, encoders, and developer utilities. 74 free online tools, no signup required. Most run in your browser; some tools contact third-party services.

74 free online tools in the Developer Tools category. Most run in your browser — no signup, no uploads to ThothBox. Some tools contact third-party services.

• JSON Formatter
• JSON to Code
• JSON to CSV
• CSV to JSON
• XML Formatter
• HTML Formatter
• HTML Viewer
• CSS Formatter
• JS Formatter
• SQL Formatter
• Base64 Encode
• Base64 Decode
• URL Encode
• URL Decode
• HTML Encode
• HTML Decode
• Regex Tester
• JWT Decoder
• YAML to JSON
• JSON to YAML
• CSS Units
• Minify HTML
• Minify CSS
• Minify JavaScript
• Code Diff Checker
• Markdown to HTML
• HTML to Markdown
• JSON Minify
• GraphQL Formatter
• TOML to JSON
• XML to JSON
• JSON to XML
• JSON Diff Viewer
• HTTP Status Codes
• Base32 Encoder/Decoder
• .gitignore Generator
• CSS Box Shadow
• CSS Text Shadow
• CSS Border Radius
• CSS Triangle
• CSS Animation Generator
• CSS Flexbox Generator
• CSS Grid Generator
• Markdown Table Generator
• JSONPath Tester
• Regex Library
• CSS Variable Generator
• HTML Entities Reference
• CSS Specificity Calculator
• Flexbox Cheatsheet
• Base64 Encoder/Decoder (Advanced)
• Git Commit Generator
• JSON Beautifier & Minifier
• Markdown Table Builder
• JSON Schema Validator
• SVG Optimizer
• CSS Gradient Generator
• CSS clip-path Generator
• Cron Expression Parser
• API Tester
• cURL Generator
• CSV to Markdown
• HTML Table Generator
• File to Base64
• cURL to Code Converter
• Crontab Schedule Builder
• App Icon & Favicon Pack
• JSON to TypeScript Interfaces
• SQL Query Formatter
• HTML to JSX Converter
• SPF, DKIM & DMARC Builder
• Regex Explainer & Visualizer
• cURL to OpenAPI Schema
• HAR File Sanitizer