DEVELOPER TOOLS
Fast, privacy-friendly online tools for developers. Convert, format, generate, calculate and debug directly in your browser.
Categories
Popular Tools
JSON to TypeScript Converter
Convert JSON objects into TypeScript interfaces or types instantly.
CSV to JSON Converter
Turn CSV data or spreadsheet exports into a JSON array of objects.
CSS Unit Converter
Convert between px, rem, em, vw and vh with a live preview.
CSS Box Shadow Generator
Design box shadows visually and copy the generated CSS.
CSS Gradient Generator
Build linear, radial and conic gradients with a visual editor.
.gitignore Generator
Generate a combined .gitignore for any stack in seconds.
Cron Expression Generator
Build and understand cron expressions with plain-English explanations.
Regex Visual Builder
Build regular expressions from visual blocks and test them live.
All Tools
JSON to TypeScript Converter
Convert JSON objects into TypeScript interfaces or types instantly.
JSON to Go Struct Converter
Generate Go structs with JSON tags from any JSON object.
YAML to JSON Converter
Convert YAML configuration files into formatted JSON.
CSV to JSON Converter
Turn CSV data or spreadsheet exports into a JSON array of objects.
CSV to SQL INSERT Generator
Generate SQL INSERT statements from CSV data.
XML to JSON Converter
Convert XML documents into clean, structured JSON.
HTML Formatter
Beautify messy or minified HTML with proper indentation.
HTML Minifier
Compress HTML by removing whitespace and comments.
CSS Formatter
Beautify CSS with consistent indentation and line breaks.
CSS Minifier
Compress CSS to reduce stylesheet file size.
JavaScript Formatter
Beautify minified or messy JavaScript code.
JavaScript Minifier
Compress JavaScript for smaller, faster-loading bundles.
SQL Formatter
Beautify SQL queries with consistent keyword casing and indentation.
SQL Minifier
Compress SQL queries by stripping comments and extra whitespace.
CSS Unit Converter
Convert between px, rem, em, vw and vh with a live preview.
CSS Box Shadow Generator
Design box shadows visually and copy the generated CSS.
CSS Gradient Generator
Build linear, radial and conic gradients with a visual editor.
Flexbox Generator
Visually design flex layouts and get the matching CSS.
CSS Grid Generator
Design a CSS grid layout visually and export the CSS.
.gitignore Generator
Generate a combined .gitignore for any stack in seconds.
README Generator
Build a professional README.md with a live markdown preview.
SEO Meta Tag Generator
Generate title, description, Open Graph and Twitter meta tags with live previews.
Mock Data Generator
Generate realistic fake names, emails, UUIDs and more as JSON, SQL or CSV.
Cron Expression Generator
Build and understand cron expressions with plain-English explanations.
Regex Visual Builder
Build regular expressions from visual blocks and test them live.
Docker Compose Generator
Visually configure services, ports and volumes to generate docker-compose.yml.
tsconfig.json Generator
Generate a tsconfig.json through a simple form.
ESLint Config Generator
Generate an ESLint flat config for TypeScript, React or Next.js.
Freelance Rate Calculator
Calculate your required hourly, daily and weekly freelance rate.
Download Time Calculator
Estimate download time from file size and connection speed.
Big O Complexity Calculator
Visualize and compare algorithmic time complexities.
Cloud Cost Estimator
Rough monthly cost estimate for AWS, Google Cloud or Vercel workloads.
JWT Decoder
Decode a JSON Web Token's header and payload locally, in your browser.
Base64 Encoder / Decoder
Encode or decode Base64 text and files locally in your browser.
URL Encoder / Decoder
Encode or decode URL components locally in your browser.
HTTP Status Code Explorer
Search and understand every HTTP status code, with causes and fixes.