How to use Compress Images
- Drop one or more images.
- Choose the quality and, if you like, a maximum side in pixels.
- Press “Compress images” and compare the size before and after.
Tips and limits
- A quality between 70 and 85 usually cuts the size a lot with almost invisible differences.
- Reducing the maximum side (for example to 1920 px) saves more than lowering quality alone.
- If an image was already optimized, the original is kept so it does not get worse.
What it is for and how it works
Compressing an image means saving it again with an algorithm that discards information the eye barely notices. The file size depends on three things: the dimensions in pixels, the format and the quality level.
That is why this tool lets you combine quality and maximum side. A 4000-pixel-wide phone photo rarely needs that size to look good on screen.
Frequently asked questions about Compress Images
Do I lose quality?
JPG and WebP compression discards detail that is barely noticeable. The lower the quality, the more you will see it.
Which format should I pick?
WebP is usually smaller than JPG at similar quality and supports transparency; every program opens JPG.
Is camera data preserved?
No. Re-encoding the image removes metadata such as location or camera model.