How to compress an image
- Add the image to the editor above.
- Choose the output format in the Download panel. JPG suits photos, WebP gives the smallest files, PNG is lossless and best for graphics.
- Set the quality with the slider, and watch the size and the percentage saved update live.
- Need an exact limit? Enter a target in the Target size (KB) field and click Compress. The tool searches for the highest quality under your limit. If even low quality is too large, it reduces the dimensions step by step.
- Download the compressed copy. Your original file is not changed.
How image compression works
JPG and WebP use lossy compression: they discard fine detail that the eye barely notices, such as tiny color variations in skies or skin. At quality settings around 75–85 the difference is very hard to see, while the file can be several times smaller than the camera original.
PNG is lossless: every pixel is kept exactly. That is ideal for screenshots, logos and text, but PNG photos are large. If a photo is saved as PNG, converting it to JPG or WebP is usually the biggest single saving you can make.
Recommended settings
| Goal | Format | Quality |
|---|---|---|
| Website photos | WebP (or JPG) | 75–82 |
| Email attachments | JPG | 75–80, resized to ~1600 px |
| Online forms with a KB limit | JPG | Use the target size field |
| Screenshots and logos | PNG (or WebP) | Lossless |
| Archive / printing | JPG | 90–95 |
Common size limits
Many application portals, government websites and job boards ask for photos or signatures under a fixed size such as 20 KB, 50 KB, 100 KB or 200 KB, often also with maximum dimensions. For very small targets, resize the image to the requested dimensions first (for example 350×450 px for an ID-style photo) and then compress — the result will look far better than squeezing a large photo to a tiny size with quality alone.
Read more in how to reduce image file size without losing quality.