🔧 Developer Tools

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Essential utilities for data conversion, formatting, generation, and more. No sign-up, no server calls—everything runs in your browser.

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Data & Conversion Tools

Parse, validate, pretty-print, minify, and explore JSON with a collapsible tree view.

Base64 Encoder/Decoder

Encode and decode Base64 instantly. Supports URL-safe mode, file input, and drag-and-drop.

URL Encoder/Decoder

Encode and decode URL components. Parse any URL into its parts with query parameter breakdown.

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More Data & Conversion Tools

CSV ↔ JSON Converter

Convert between CSV and JSON formats easily.

Validate YAML syntax and detect formatting errors.

HTML Entity Encoder

Encode text to HTML entities or decode them back. Named, decimal, and hex styles.

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Code Tools

Test regular expressions with live matching and explanations.

Format JavaScript, HTML, CSS, JSON, and more.

Markdown Preview

Live preview markdown with GitHub-style rendering.

Minify JavaScript, CSS, HTML, and JSON for production.

Syntax Highlighter

Highlight code in multiple programming languages.

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Generators & Utilities

Generate MD5, SHA-1, SHA-256, SHA-384, and SHA-512 hashes for any text or file. Compare against a known hash instantly.

UUID/GUID Generator

Generate unique identifiers in various formats.

QR Code Generator

Create QR codes from text or URLs instantly.

Password Generator

Generate secure passwords with custom parameters.

Lorem Ipsum Generator

Generate placeholder text for design mockups.

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Security & Auth Tools

Decode and inspect JSON Web Tokens. View header, payload, and expiry claims. Never sends your token anywhere.

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Developer Utilities

Cron Expression Parser

Decode any cron expression into plain English and preview the next scheduled run times.

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Text & Comparison Tools

Text Statistics

Instant word count, character count, sentences, paragraphs, reading time, and word frequency.

Convert text between UPPERCASE, lowercase, camelCase, and more.

Compare two texts and see differences side-by-side with colour-coded highlighting.

Color Converter

Convert colors between HEX, RGB, and HSL formats.