Developer Tools Text Tools Data & File Tools Math & Calculators Visual & Color Tools Time & Date Tools General Utilities Fun & Novelty

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Developer Tools

JSON, Code Formatters, Validators, SQL Tools

JSON Prettifier
JSON Minifier
JSON Validator
JSON ↔ YAML Converter
JSON ↔ XML Converter
SQL Formatter
HTML Formatter/Minifier
CSS Formatter/Minifier
JS Formatter/Minifier
Markdown ↔ HTML Converter
Cron Expression Generator/Validator

Text Tools

Word Counter, Case Converter, Regex Tester

Word Counter
Character Counter
Line Counter
Case Converter
Duplicate Line Remover
Sort Lines Alphabetically
Text Diff / Compare
Regex Tester

Data & File Tools

CSV, PDF, Image Tools, Hash Generators

CSV Delimiter Changer
VCard Generator
File Diff Checker
File Checksum Generator (MD5/SHA, Web Crypto)
QR Code Generator
Barcode Generator
Image → Base64 Converter
Image Compressor
JSON ↔ CSV Converter
PDF Merger

Math & Calculators

Unit Converter, Currency, Scientific Calculator

Unit Converter
Number Base Converter
Percentage Calculator
Loan / Mortgage Calculator
BMI Calculator
Tip Calculator
Scientific Calculator
Compound Interest Calculator

Visual & Color Tools

Color Converter, Gradients, Accessibility

HEX ↔ RGB ↔ HSL Converter
Gradient Generator
Contrast Checker (WCAG)
Color Palette Extractor (from image)
Favicon Generator
Color Palette Generator

Time & Date Tools

Epoch Converter, Timezone, Countdown Timer

Epoch ↔ Human Date Converter
Date/Time Calculator
Age Calculator
Time Zone Converter
Countdown Timer
Stopwatch

General Utilities

Password Generator, UUID, URL Shortener

Password Generator
Password Strength Checker
UUID Generator
Lorem Ipsum Generator

Fun & Novelty

Lorem Ipsum, Creative Text Generators

Lorem Ipsum Generator (Extended)

About OpenTechTools

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