All Developer Tools

Format, validate, and minify JSON data with syntax highlighting and error detection.

Count tokens for GPT, Claude, and Llama models with multi-model tiktoken support.

Encode and decode text and files to/from Base64 format.

Encode and decode URL components for safe web usage.

Visual cron expression builder with next execution time preview.

Convert Markdown to HTML with live preview and syntax highlighting.

Generate SHA-256, SHA-512, SHA-1, and MD5 hashes instantly.

Test and debug regular expressions with real-time highlighting, capture groups, search & replace, and shareable URLs.

Convert colors between HEX, RGB, and HSL with live preview.

Generate UUID v4 identifiers. Bulk generate up to 25 at once.

Decode and inspect JWT tokens. View header, payload, and expiration.

Convert Unix timestamps to human-readable dates and vice versa.

Compare two texts and highlight differences line by line.

Generate configurable placeholder text by paragraphs, sentences, or words.

Minify CSS code and see file size savings instantly.

Format, beautify, or minify HTML code with customizable indentation.

Minify JavaScript code and remove comments to reduce file size.

Format and beautify SQL queries with customizable keyword casing.

Convert between YAML and JSON formats instantly. Bidirectional.

Generate cryptographically secure passwords with strength meter.

Calculate Unix file permissions with visual toggles. Octal, symbolic, and command output.

Complete HTTP status code reference with search, filters, and descriptions.

Convert text between UPPERCASE, lowercase, camelCase, snake_case, kebab-case, and more.

Convert JSON arrays to CSV and CSV to JSON. Custom delimiter support.

Convert numbers between binary, octal, decimal, and hexadecimal instantly.

Generate JSON Schema from any JSON data with type inference, required fields, and nested object support.

Test REST APIs from your browser. Send GET, POST, PUT, DELETE requests with headers and body.

Full-featured Markdown editor with live preview, GFM tables, task lists, syntax highlighting, and HTML export.

Create a stunning GitHub profile README with badges, stats, skills, and social links. 3 templates, 50+ badges.

Generate beautiful color palettes with harmony rules, export to CSS/SCSS/Tailwind, and share via URL.

Generate QR codes for text, URLs, WiFi, vCard, and email. Custom colors, sizes, PNG & SVG export.

Preview how your URL looks on Google, Twitter, Facebook, LinkedIn, and Slack. Debug OG meta tags instantly.

Generate SEO meta tags with live Google, Twitter, and Facebook previews. Copy-ready HTML.

Convert SVG to high-quality PNG with custom dimensions, background color, and retina scaling.

Generate multi-size favicons from any image with manifest.json and HTML tags.

Create beautiful code screenshots with syntax highlighting, themes, and gradient backgrounds. Carbon-style.