Free Online Tools for Developers, Images, Text and Calculations

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Developer Tools JSON Formatter Format, validate or minify JSON with readable syntax and precise parse errors. Open tool

Image Tools Image Compressor Reduce JPG, PNG or WebP file size locally with adjustable quality and dimensions. Open tool

Generators & Converters QR Code Generator Create a downloadable QR code for a URL or short text in your browser. Open tool

Calculators Percentage Calculator Calculate a percentage of a value, a ratio percentage or percentage change. Open tool

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Tool categories

Developer Tools 6 tools

Format, inspect and transform common data and code formats directly in your browser.

Image Tools 4 tools

Compress and convert everyday web image formats without sending files to a remote processor.

Calculators 3 tools

Practical calculators for dates, percentages and loan repayment planning.

Text Tools 2 tools

Measure and transform text for writing, publishing and web workflows.

Generators & Converters 5 tools

Generate secure values, QR images and convert timestamps or encoded data.

Common workflows

Image Tools Image Compressor Reduce JPG, PNG or WebP file size locally with adjustable quality and dimensions. Open tool

Calculators Age Calculator Calculate an exact age in years, months and days for any reference date. Open tool

Text Tools Word & Character Counter Count words, characters, sentences, paragraphs and estimated reading time live. Open tool

Generators & Converters Password Generator Create strong random passwords locally with selectable length and character groups. Open tool

Complete collection

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20 tools

Developer Tools JSON Formatter Format, validate or minify JSON with readable syntax and precise parse errors. Open tool

Image Tools Image Compressor Reduce JPG, PNG or WebP file size locally with adjustable quality and dimensions. Open tool

Generators & Converters QR Code Generator Create a downloadable QR code for a URL or short text in your browser. Open tool

Calculators Age Calculator Calculate an exact age in years, months and days for any reference date. Open tool

Calculators Percentage Calculator Calculate a percentage of a value, a ratio percentage or percentage change. Open tool

Calculators EMI Calculator Estimate a fixed monthly loan payment, total payment and total interest. Open tool

Image Tools JPG to PNG Converter Convert a JPG image to a downloadable PNG locally in your browser. Open tool

Image Tools PNG to JPG Converter Convert PNG images to compact JPG files with a safe white background. Open tool

Image Tools WebP Converter Convert JPG, PNG and WebP images between practical web formats. Open tool

Text Tools Word & Character Counter Count words, characters, sentences, paragraphs and estimated reading time live. Open tool

Developer Tools JWT Decoder Decode JWT header and payload data locally without claiming signature verification. Open tool

Generators & Converters Base64 Encoder & Decoder Encode Unicode text as Base64 or decode valid Base64 back to text. Open tool

Generators & Converters Unix Timestamp Converter Convert Unix seconds, milliseconds and readable dates across local and UTC time. Open tool

Generators & Converters UUID Generator Generate one or many cryptographically random UUID version 4 identifiers. Open tool

Developer Tools XML Formatter Validate, format or compact XML using the browser XML parser. Open tool

Developer Tools SQL Formatter Make common SQL statements easier to scan or compact for sharing. Open tool

Developer Tools HTML Formatter Format HTML structure or remove unnecessary inter-tag whitespace locally. Open tool

Text Tools URL Encoder & Decoder Encode text as a URL component or decode percent-encoded values. Open tool

Generators & Converters Password Generator Create strong random passwords locally with selectable length and character groups. Open tool

Developer Tools Regex Tester Test a JavaScript regular expression, flags and matches against sample text. Open tool

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