This guide is for designers and site owners who need to optimize website images, compress chat attachments, or prepare assets. You'll learn how to choose the right image format, tune compression settings, and run batch optimization for free with the image compressor.
Step 1: Choose the Right Format
| Scenario | Recommended format | Why |
|---|---|---|
| Photos / real-world scenes | JPEG or WebP | Lossy compression keeps files small with great visual quality |
| Icons / logos | PNG or WebP | Lossless plus alpha transparency |
| Web images | WebP | Usually 25%–35% smaller than JPEG |
| Screenshots with text | PNG | Crisp text edges, no compression artifacts |
Step 2: Set the Compression Quality
- 80%: Default starting point for page hero images.
- 60%: List images / thumbnails.
- 40%: Tiny previews or background images.
- 90%+: High-resolution output or assets for later editing.
Step 3: Limit the Dimensions
If your source is a 4000px camera photo, set a maximum width of 1920px. Optimizing dimensions and quality together usually cuts the file size by 60%–90%.
Step 4: Process in Batches
- Drag multiple images into the compressor at once.
- Set the format, quality and dimensions for the whole batch.
- Click "Compress" and wait for the local processing to finish.
- Download all results in one go.
Frequently Asked Questions (FAQ)
Text looks blurry after compression — what should I do?
For images with lots of text, use PNG or raise the quality above 90%; avoid heavy lossy compression.
Will WebP fail to open anywhere?
All major modern browsers support WebP natively; older browsers can fall back to JPEG.
References
- WebP — Google Developers: https://developers.google.com/speed/webp
- Canvas API — MDN Web Docs: https://developer.mozilla.org/en-US/docs/Web/API/Canvas_API