Fast, free and private developer tools

Format, validate, beautify and minify JSON data online with precise error location. Works entirely in your browser.

Encode or decode text to and from Base64, including URL-safe mode and file-to-Base64 conversion with Unicode support.

Encode and decode URLs or URI components following RFC 3986, perfect for query strings, paths and shareable links.

Generate MD5, SHA-1, SHA-256 and SHA-512 hashes using the Web Crypto API. Your input never leaves your browser.

Convert numbers between binary, octal, decimal and hexadecimal with BigInt support for arbitrarily large values.

Generate QR codes from text or URLs, customize the color and size, and download a high-quality PNG — all client-side.

Upload an image of a QR code and decode its content instantly, entirely in your browser — no camera or server upload needed.

Compress JPEG, PNG and WebP images in your browser to reduce file size, with controls for quality, output format and dimensions.

Convert images between PNG, JPEG and WebP in your browser, with a quality control for the lossy formats.

Crop images online by dragging a selection, with free and fixed aspect ratios. Runs entirely in your browser.

Add a text watermark to your images with control over position, size, color, opacity and rotation — no upload required.

Combine one or more images into a single PDF document, one image per page, right in your browser.

Convert each page of a PDF into a high-quality PNG image, entirely client-side in your browser.

Turn a set of images into an animated GIF, with control over frame delay and output size. Runs in your browser.

Add classic top and bottom text to any image to create a meme, with adjustable size, color and outline.

Generate a favicon.ico and a full set of PNG icons from any image, ready to drop straight into your website.

Clean up and compress SVG code by removing comments, metadata and editor cruft, and by rounding coordinates.

Convert colors between HEX, RGB, HSL and CMYK instantly, and copy any format with a single click.

Pick a color with a visual picker or the on-screen eyedropper, and read its HEX, RGB and HSL values plus contrast.

Generate complementary, analogous, triadic and tint/shade palettes from any base color, ready to copy.

Extract the dominant colors from an image, or click any pixel to sample its exact color. Runs in your browser.