محول صيغة الصورة

Image Formats Explained: JPG, PNG, WebP, and More

<strong>JPG</strong> compresses photos into small files but loses a bit of quality each time. <strong>PNG</strong> keeps everything pixel-perfect and supports transparent backgrounds. <strong>WebP</strong> is Google's modern format -- about 30% smaller than JPG at the same quality. <strong>GIF</strong> handles animations (hello, memes), and <strong>BMP</strong> is raw, uncompressed image data.

Powered by Rust WebAssembly -- Fast and Private

This converter runs Rust's <code>image</code> crate compiled to WebAssembly, so it processes your images at near-native speed right in your browser. Nothing gets uploaded to a server. Ever.

How Image Formats Actually Differ

JPEG handles 16 million colors and is built for photographs, but it doesn't do transparency -- no see-through backgrounds. PNG gives you lossless compression and full transparency support, but files are bigger. WebP is the best of both worlds: lossy or lossless compression, transparency, and file sizes 25-34% smaller than JPEG. GIF only does 256 colors (which is why GIF photos look terrible) but it supports animation. Each format has a sweet spot -- the trick is knowing which one to reach for.

A Simple Guide: Which Format to Use When

Photos on a website? JPEG or WebP -- they compress well and load fast. Need a transparent background for a logo or icon? PNG is your only real choice (well, WebP does it too). Want the smallest possible file sizes without sacrificing quality? WebP wins every time. Making a quick animation? GIF for simple stuff, WebP animation for anything more complex. Sending images by email? Stick with JPEG -- it works on literally every device. Printing at high quality? TIFF or PNG will preserve every detail.

Pro Tips for Optimizing Images on the Web

For JPEG files, a quality setting between 75% and 85% hits the sweet spot -- you probably can't see the difference from 100%, but the file is dramatically smaller. Converting everything to WebP can shave 30% or more off your image sizes with no visible quality loss. If you're building a responsive site, create multiple image sizes and use srcset in your HTML so devices download only what they need. Stripping EXIF metadata (camera info, GPS data, etc.) trims file size and protects your privacy. And always eyeball your images after converting -- numbers don't tell the whole story.