Image Compression for Web Developers

Image size directly impacts page load speed, Core Web Vitals, and user experience.

When to Compress Images

- Before uploading to production websites - When email attachments exceed size limits - For mobile app asset optimization - Before converting images to PDF

Lossy vs Lossless

- **JPEG** — Best for photos; lossy compression with quality slider. - **PNG** — Best for graphics with transparency; larger files. - **WebP** — Modern format with excellent compression (convert via our image tools).

StackSutra Image Compressor

Upload any image, adjust quality, and download the compressed result. 100% client-side — your images never leave your device.

Target Sizes

- Hero images: under 200KB when possible - Thumbnails: under 50KB - Icons: use SVG when possible