\x22File exceeds 5MB limit.\x22 Sound familiar? Whether you're attaching images to an email, uploading to a CMS, or submitting an online form, file size limits always get in the way. But here's the thing …?you usually don't need that much resolution. A photo for social media at 500KB looks fine. A product image for an online store at 200KB is perfectly clear. The trick is compressing just enough.
JPEG vs PNG: Choose the Right Format
JPEG: Best for photos and complex images with lots of colors. Lossy compression means you trade some quality for much smaller file sizes. A 10MB photo can easily drop to 500KB at quality 75% with minimal visible difference.
PNG: Best for screenshots, icons, and images with transparency. Lossless compression means bigger files. Don't use PNG for photos.
WebP: A modern format that combines the best of both. WebP is 25-35% smaller than JPEG at the same quality. Supported in Chrome, Firefox, Edge, and Safari 14+. If your audience uses modern browsers, WebP is the way to go.
Compression Settings That Work
- JPEG Quality 60-75%: Web use. 80%+ quality gives diminishing returns …?the file is much larger but visually almost identical to 75%.
- JPEG Quality 30-50%: Thumbnails and previews. Blocky artifacts become visible but acceptable for small display sizes.
- PNG-8 instead of PNG-24: Reduces the color palette from 16 million to 256 colors. Perfect for screenshots and simple graphics. File size drops by 50-70%.
- Resize first: If your image will be displayed at 800px wide, resize it to 800px before compressing. There's no point keeping a 4000px image when the browser will downscale it anyway.
Tools We Recommend
Use YoolBox Image Compressor (works offline in your browser, nothing uploaded), Squoosh (Google's open-source compressor with side-by-side preview), or TinyPNG (simple drag-drop-compress workflow). All three are free and handle batch processing.