Image Compressor
Shrink image file size without losing quality.
About Image Compressor
Compress JPG, PNG, and WebP images online for free and dramatically reduce their file size without a noticeable drop in quality. This image compressor is perfect for speeding up websites, shrinking photos before emailing them, or getting under an upload size limit. You control the quality with a simple slider and see the new file size instantly. All compression happens locally in your browser, so your images are never uploaded - they stay private on your device - and there are no signups, watermarks, or daily limits.
How to use this tool
- 1Upload an image (JPG, PNG, or WebP).
- 2Adjust the quality slider to your preferred compression level.
- 3Download the compressed image once processing finishes.
Choosing quality settings by use case
There's no single 'right' compression level - it depends on what the image is for. These starting points work well in practice.
| Use case | Quality setting | Why |
|---|---|---|
| Hero / banner photos | 75-85 | Large display size makes artifacts visible |
| Blog post images | 65-75 | Good balance of size and clarity |
| Thumbnails | 50-65 | Small display hides compression artifacts |
| Screenshots with text | 80-90 (or use PNG) | Text edges show artifacts first |
| Email attachments | 60-70 | Prioritize small size for deliverability |
Rule of thumb: compress, look at the result at its actual display size, and step quality down until you notice degradation - then go one step back up. Most photos survive 70% quality with no visible difference at typical web sizes.
Frequently asked questions
Will compression reduce image quality?
The quality slider lets you balance size and visual quality. Moderate compression is usually visually lossless for photos.
Are my images uploaded?
No. Compression runs entirely in your browser, so your images stay on your device.
Related guide
5 min readHow to Compress Images for a Faster Website
Large images are the #1 cause of slow web pages. Learn how to compress and resize images the right way to speed up your site.