Free tools. Zero uploads.
Fast, privacy-first utilities for developers and everyday tasks — formatters, converters, calculators, and more. Everything runs entirely in your browser, so nothing you type or upload ever reaches a server.
🔥 Popular Tools
JSON Formatter & Validator
Format, minify, and validate JSON instantly in your browser.
Regex Tester
Test regular expressions with live-highlighted matches and groups.
Word & Character Counter
Count words, characters, sentences, and paragraphs as you type.
Base64 Encode/Decode
Encode text to Base64 or decode Base64 back to text.
EMI Calculator
Calculate monthly loan EMI, total interest, and total payment.
India Income Tax Calculator (New Regime)
Estimate India income tax for FY 2025-26 under the new regime.
PDF Merge
Combine multiple PDF files into one, entirely in your browser.
QR Code Generator
Generate a QR code from any URL or text and download it as a PNG.
Formatters
JSON Formatter & Validator
Format, minify, and validate JSON instantly in your browser.
XML Formatter & Validator
Format and validate XML instantly in your browser.
YAML Formatter & Validator
Format, validate, and convert YAML to JSON instantly.
Markdown to HTML Preview
Preview Markdown as rendered HTML, with a raw HTML view you can copy.
SQL Formatter
Format and beautify SQL queries with Standard SQL, MySQL, and PostgreSQL support.
Encoders & Decoders
JWT Decoder
Decode a JWT's header, payload, and expiry status instantly.
Base64 Encode/Decode
Encode text to Base64 or decode Base64 back to text.
URL Encoder/Decoder
Encode text for URLs or decode URL-encoded text back to plain text.
HTML Entity Encoder/Decoder
Encode text to HTML entities or decode HTML entities back to plain text.
Developer Tools
Regex Tester
Test regular expressions with live-highlighted matches and groups.
JSON to Python Converter
Generate Python dataclasses from a JSON sample, with types inferred automatically.
Cron Expression Parser
Explain a cron expression in plain English and see its next 5 run times.
JSON to TypeScript Converter
Generate TypeScript interfaces from a JSON sample, with types inferred automatically.
cURL to Python/JavaScript Converter
Convert a cURL command into equivalent Python (requests) or JavaScript (fetch) code.
JWT Generator
Build and sign a JWT from a custom header, payload, and secret using HS256.
Cron Expression Generator
Build a valid cron expression using simple field pickers, with a plain-English preview.
Unix Timestamp Converter
Convert between a Unix timestamp and a human-readable date, in local time and UTC.
Hash Generator (MD5, SHA-1, SHA-256, SHA-512)
Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from any text.
UUID/GUID Generator
Generate random UUID v4 / GUID values, one at a time or in bulk.
Text Tools
Text Diff Checker
Compare two blocks of text and see the differences highlighted.
Word & Character Counter
Count words, characters, sentences, and paragraphs as you type.
Case Converter
Convert text to UPPERCASE, Title Case, camelCase, snake_case, and more.
Duplicate Line Remover & Text Sorter
Remove duplicate lines, sort alphabetically, and strip empty lines — combine any of the three.
Password Strength Checker
Check password strength based on length, variety, and patterns.
Converters
Calculators
Age Calculator
Calculate exact age in years, months, and days between two dates.
Date Difference Calculator
Calculate the difference between two dates in years, months, and days.
BMI Calculator
Calculate your Body Mass Index using metric or imperial units.
Percentage Calculator
Calculate percentages, increases, decreases, and percent change.
EMI Calculator
Calculate monthly loan EMI, total interest, and total payment.
India Income Tax Calculator (New Regime)
Estimate India income tax for FY 2025-26 under the new regime.