Developer & Code Tools

Format, prettify, and validate JSON online. Instantly beautify minified JSON with proper indentation and syntax highlighting. Free JSON formatter tool.

Generate RFC 4122 compliant UUIDs (v1 and v4) instantly online. Bulk generate unique identifiers for databases, APIs, and software development.

Encode any text or string to Base64 format instantly. Used for encoding data for URLs, emails, and APIs. Free online Base64 encoder tool.

Decode Base64 encoded strings back to plain text instantly. Supports standard and URL-safe Base64. Free online Base64 decoder tool.

Generate MD5, SHA-1, SHA-256, and SHA-512 cryptographic hashes from any text string. Free online hash generator using browser-native Web Crypto API.

Encode a URL or query string to percent-encoded format for safe use in HTTP requests. Free online URL encoder — converts special characters instantly.

Decode URL percent-encoded strings back to plain text instantly. Converts %XX sequences to their original characters — free developer tool.

Decode and inspect JSON Web Tokens (JWT) instantly in your browser. View the header, payload, and expiry claims — no server required, fully private.

Test regular expressions with live match highlighting in real time. Supports all JavaScript regex flags — perfect for debugging patterns and learning regex.

Build and validate cron schedule expressions visually. Get human-readable descriptions for any cron syntax — ideal for server jobs and CI/CD pipelines.

Pick colors visually and get HEX, RGB, and HSL color codes instantly. Free online color picker for designers and web developers.

Build linear and radial CSS gradients visually and copy ready-to-use CSS code. Free online gradient generator with live preview for web designers.

Generate CSS box-shadow code with a visual editor. Adjust offset, blur, spread, and color, then copy the generated CSS — free online shadow tool.

Generate CSS border-radius values with a live visual preview and copy ready-to-paste CSS code for any rounded corner shape you design.

Beautify and indent HTML markup instantly. Paste minified or messy HTML and get clean, readable, well-structured code — free online HTML formatter.

Minify CSS to reduce file size and improve page load speed. Remove whitespace and comments and copy the compressed CSS output — free online tool.

Minify JavaScript to reduce file size instantly. Remove whitespace, comments, and unnecessary characters from your scripts — free online JS minifier.

Convert a JSON array to CSV format instantly. Automatically maps JSON keys to column headers for a clean spreadsheet output — free developer tool.

Convert CSV data to a JSON array instantly. Automatically parses headers and outputs clean, valid JSON ready to use in your application or API.

Convert YAML to JSON instantly online. Paste any valid YAML and get properly formatted JSON output with one click — free tool for developers.

Generate TypeScript interfaces from a JSON object automatically. Paste your JSON and get typed interface definitions instantly — free developer tool.

Beautify and format SQL queries with proper indentation. Paste any messy SQL and get clean, readable, well-structured SQL code in seconds.

Create Markdown tables from structured input with the Markdown Table Generator. Define columns and rows and get a perfectly formatted Markdown table instantly.

Convert pixel values to REM units based on any root font-size. Free online px to rem converter for responsive CSS — essential for modern web design workflows.

Convert Unix timestamps to human-readable dates and vice versa. Free online epoch/Unix timestamp converter for developers and system administrators.

Generate .gitignore files for any tech stack with the .gitignore Generator. Select languages and frameworks and get a comprehensive, ready-to-use .gitignore file.

Break a URL into its component parts with the URL Parser. Instantly extract the protocol, host, path, query parameters and hash fragment from any URL.

Convert numbers between binary, octal, decimal and hexadecimal with the Number Base Converter. Supports all common bases with instant results.

Calculate and maintain correct aspect ratios when resizing images or videos. Enter width and height to find the ratio, or scale dimensions while preserving proportions.

Generate QR codes for any text, URL or contact info with the QR Code Generator. Download a high-resolution QR code image instantly — no sign-up needed.

Minify and compress JSON by removing whitespace and formatting. See exact byte savings — free online JSON minifier for APIs, config files, and performance optimization.

Validate JSON syntax instantly and see a formatted preview on success. Pinpoints the exact line of any error — free online JSON validator and syntax checker.

Convert JSON to YAML format instantly online. Paste your JSON and get clean, readable YAML output ready for configuration files — free developer tool.

Convert JSON objects to well-formed XML markup instantly. Free online JSON to XML converter — useful for legacy APIs, SOAP services, and data transformation.

Format and beautify XML with proper indentation instantly. Highlights errors in invalid XML — free online XML formatter for developers and data engineers.

Generate CSS text-shadow code with a visual editor. Adjust offset, blur, and color and copy the ready-to-use CSS — free online text shadow generator for web designers.

Build CSS flexbox layouts visually with a live preview. Set justify-content, align-items, flex-direction, gap, and more — free online flexbox code generator.

Generate CSS grid layout code visually with a live preview. Define columns, rows, gap, and alignment — free online CSS grid generator for responsive web design.

Encode a JSON payload into a signed JWT using HS256 in your browser. Input payload and secret to generate a token instantly — free online JWT encoder, fully private.

Bump semantic version numbers for major, minor, and patch releases with one click. Add pre-release tags and understand semver rules — free online version bumper tool.

Escape and unescape strings for JavaScript, HTML, URL, and RegExp contexts instantly. Free online string escape tool — useful for debugging, data sanitization, and encoding.

Generate TypeScript Zod schema code from any JSON object automatically. Infers types for strings, numbers, booleans, arrays, and nested objects — free online Zod schema generator.

Generate Code128 barcodes from any text or number in your browser. Download the barcode as an image — free online barcode generator with no external API calls.

Convert SVG code or files to Base64 data URIs for inline CSS and HTML use. See ready-to-use img and CSS url() snippets — free online SVG to Base64 encoder.

Look up all HTTP status codes across 1xx, 2xx, 3xx, 4xx, and 5xx ranges with names and descriptions. Searchable, color-coded reference — essential for developers and API designers.

Calculate network address, broadcast, subnet mask, first/last host, and total hosts from any CIDR notation. Free online IP CIDR range calculator for network engineers.

Generate complementary, analogous, triadic, tetradic, and monochromatic color palettes from any base hex color. Copy hex codes — free online color palette generator.

Upload any image and convert it to a Base64 data URI instantly. See original vs. encoded file size, preview the image, and copy the URI — free online image to Base64 encoder.