⚡ TOOLBOX

Free Online Tools

MakeTools is a collection of 31 free online tools for developers and creators. All tools run in your browser — no data is sent to any server. No signup required.

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JSON Formatter & Validator

TL;DR: Format, validate, and minify JSON data in your browser instantly. Free online JSON formatter and validator supporting nested objects, arrays, and detailed error messages. All processing happens client-side — no data is sent to any server.
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Base64 Encode & Decode

TL;DR: Encode text to Base64 or decode Base64 strings back to plain text. Free, fast, and works entirely in your browser.
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URL Encoder & Decoder

Encode or decode URLs and URI components online. Convert special characters to their percent-encoded equivalents for safe URL transmission.
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UUID Generator

TL;DR: Generate random UUID v4 identifiers instantly. Create single or batch UUIDs in your browser — no server required.
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Strong Password Generator

TL;DR: Generate cryptographically secure random passwords with customizable length and character types. All generation happens locally in your browser.
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Hash Generator (MD5, SHA-256, SHA-512)

TL;DR: Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from text input. Uses Web Crypto API for secure hashing, entirely in your browser.
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Regex Tester & Debugger

Test and debug regular expressions online. See matches highlighted in real-time with capture group details and match information.
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Unix Timestamp Converter

Convert Unix timestamps to human-readable dates and vice versa. Supports seconds and milliseconds with multiple timezone display.
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Color Converter (HEX, RGB, HSL)

Convert colors between HEX, RGB, HSL, and CMYK formats. Pick colors with a visual color picker and get values in all formats instantly.
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Lorem Ipsum Generator

Generate Lorem Ipsum placeholder text for your designs. Customize the number of paragraphs, sentences, or words needed.
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HTML Live Preview

Write HTML and see it rendered in real-time. Test snippets, prototypes, and templates directly in your browser.
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CSS Formatter & Minifier

Beautify or minify CSS code instantly. Clean up messy stylesheets or compress them for production.
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HTML Formatter & Beautifier

Format and beautify HTML code with proper indentation. Clean up minified or messy HTML instantly.
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Markdown Preview

Write Markdown and see the rendered HTML in real-time. Perfect for README files, documentation, and notes.
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Word Counter

Count words, characters, sentences, paragraphs, and estimate reading time. Perfect for writers and content creators.
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Case Converter

Convert text between UPPER CASE, lower case, Title Case, camelCase, snake_case, kebab-case, and more.
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CSV to JSON Converter

Convert CSV data to JSON format instantly. Paste your CSV and get a structured JSON array.
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JSON to CSV Converter

Convert JSON arrays to CSV format. Export structured data to spreadsheet-compatible format.
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JWT Decoder

Decode and inspect JSON Web Tokens (JWT) instantly. View header, payload, signature, and expiration status.
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YAML to JSON Converter

Convert YAML data to JSON format instantly. Parse configuration files and structured data.
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HTML Entity Encoder

Encode or decode HTML entities. Convert special characters like <, >, &, quotes to their HTML entity equivalents.
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Slug Generator

Convert any text into URL-friendly slugs. Perfect for blog post URLs, file names, and SEO-friendly links.
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Number Base Converter

Convert numbers between binary, octal, decimal, hexadecimal, base32, and base36. Essential for developers.
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Cron Expression Parser

Parse and understand cron expressions. See what your schedule means in plain English and view upcoming run times.
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CSS Gradient Generator

Create beautiful CSS gradients visually. Pick colors, adjust angle, and copy the CSS code instantly.
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CSS Box Shadow Generator

Generate CSS box shadows visually. Adjust X/Y offset, blur, spread, color, and opacity with live preview.
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Text Diff Checker

Compare two texts and see the differences highlighted. Track additions, deletions, and changes line by line.
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Image Compressor

Compress images directly in your browser. Reduce file size while maintaining quality. No upload to any server.
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Image Resizer

Resize images to any dimensions. Maintain aspect ratio or set custom width and height. Process in your browser.
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Image Format Converter

Convert images between PNG, JPG, and WebP formats. Adjust quality and download the result.
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QR Code Generator

Generate QR codes for URLs, text, email, phone numbers, and WiFi. Download as PNG or copy to clipboard.