💻 Developer Tools · 37 Tools · Free · No Signup
Developer Tools
Code formatting, validation, conversion, and developer productivity tools.
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Featured Developer Tools
Top PicksAPI Request Tester
Browser-based Postman-like tool to compose and send HTTP requests and inspect responses in real time.
Code Diff Viewer
Compare two code snippets and view differences with syntax highlighting.
JSON Formatter
Format and beautify JSON data with proper indentation and syntax highlighting.
Regex Tester
Test regular expressions with live highlighting and match information.
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All Developer Tools
37 toolsAPI Request Tester
Browser-based Postman-like tool to compose and send HTTP requests and inspect responses in real time.
Code Diff Viewer
Compare two code snippets and view differences with syntax highlighting.
JSON Formatter
Format and beautify JSON data with proper indentation and syntax highlighting.
Regex Tester
Test regular expressions with live highlighting and match information.
.gitignore Generator
Generate .gitignore files for any project type: Node, Python, Java, React, and more.
CSS Minifier
Minify CSS code by removing whitespace, comments, and optimizing.
HTML Formatter
Beautify and format HTML code with proper indentation.
JS Minifier
Minify JavaScript code by removing whitespace and shortening variable names.
JSON Validator
Validate JSON syntax and get detailed error messages for invalid JSON.
JSON to CSV
Convert JSON arrays to CSV format for spreadsheet compatibility.
SQL Formatter
Format and beautify SQL queries with proper indentation and keywords.
Unix Time Converter
Convert between Unix timestamps and human-readable dates.
.env File Generator
Generate .env file templates for Node.js, Python, and other frameworks.
Aspect Ratio Calculator
Calculate width, height, or ratio for common aspect ratios (16:9, 4:3, 1:1, etc.).
Base Converter
Convert numbers between any base from 2 to 36.
Binary to Decimal
Convert binary numbers to decimal format.
CSS Beautifier
Format and beautify compressed CSS code with proper indentation.
CSS Specificity Calculator
Calculate and compare the specificity of any CSS selectors.
Cron Expression Builder
Build and validate cron expressions with a visual interface.
Decimal to Binary
Convert decimal numbers to binary format.
Decimal to Hex
Convert decimal numbers to hexadecimal format.
Docker Compose Generator
Generate docker-compose.yml files for common service configurations.
Full Color Code Converter
Convert between HEX, RGB, HSL, HSV, and CMYK color formats.
HTML Minifier
Minify HTML by removing whitespace, comments, and unnecessary characters.
Hex to Binary
Convert hexadecimal numbers to binary format.
Hex to Decimal
Convert hexadecimal numbers to decimal format.
JS Beautifier
Format and beautify compressed JavaScript code.
JSON Minifier
Minify JSON by removing all whitespace and formatting.
JSON Prettifier
Pretty-print JSON with customizable indentation levels.
JSON to XML
Convert JSON data to well-formed XML format.
JSONPath Tester
Test and evaluate JSONPath expressions against JSON data.
Query String Parser
Parse and decode URL query strings into key-value pairs.
README Generator
Generate professional GitHub README.md files with sections, badges, and formatting.
Timestamp Converter
Convert timestamps between different formats and time zones.
URL Parser
Parse URLs into components: protocol, host, path, query parameters.
XML Formatter
Format and beautify XML documents with proper indentation.
XML Validator
Validate XML syntax and check for well-formedness.
Security & Encoding
21 tools — Password generators, hash functions, encoding tools, and security util...
Text & Writing Tools
32 tools — Text manipulation, formatting, counting, and conversion tools for writ...
Math & Calculators
22 tools — Mathematical calculations, unit conversions, financial calculators, an...
Generators & Utilities
20 tools — Random generators, fake data creators, and utility tools for various p...
Design & Visual Tools
28 tools — Color tools, CSS generators, and visual design utilities for web devel...
Productivity & Daily Tools
22 tools — Personal productivity tools, timers, planners, and organizational util...
Network & Web Utilities
15 tools — Browser information, network utilities, and web development testing to...
Fun & Interactive Games
37 tools — Browser-based games, tests, and interactive challenges. All run locall...
Thinking Games
60 tools — Strategy, logic, and puzzle games to challenge your mind. All games ru...
File Conversion
50 tools — Convert images, documents, data and media locally in your browser. No ...
Finance & Budget
8 tools — Financial calculators, budget planners, investment tools, and money ut...
Music & Audio
8 tools — Metronome, instrument tuner, chord generator, and music theory tools. ...
Health & Fitness
9 tools — Health calculators, fitness tools, and wellness utilities to help you ...
Food & Nutrition
6 tools — Cooking measurements, nutrition calculators, diet planning tools, and ...
Career & Business
5 tools — Salary tools, invoice generators, freelance calculators, and business ...
Travel & Geography
5 tools — Time zones, jet lag calculators, travel budgets, and geography tools f...
Home & Life
4 tools — Home improvement calculators, electricity costs, paint estimators, and...
Mindfulness & Wellness
4 tools — Meditation timers, breathing exercises, mood tracking, and wellness to...
Parenting & Kids
4 tools — Pregnancy calculators, baby sleep schedules, child growth tracking, an...
Israeli Finance
4 tools — Israeli tax calculators, net salary (neto/bruto), Bituach Leumi, and l...
Ecology & Environment
4 tools — Carbon footprint, water usage, energy savings, and sustainability calc...
Creativity & Arts
4 tools — Story generators, color tools, writing aids, and creative prompts for ...
Learning & Academia
5 tools — GPA calculators, grade converters, study schedules, and academic tools...