About Image Compressor
Compression re-encodes the image at a lower quality and can also scale it down. You see the exact before and after sizes and can compare both versions side by side.
PNG is a lossless format, so it shrinks only a little when kept as PNG. Saving it as WebP or JPG usually makes it many times smaller; WebP keeps transparency, JPG does not.
How to get an image under 100 KB or 200 KB
Upload forms often ask for images below a size limit. The compressor does not aim at an exact size, but these steps usually get a photo there:
- Choose WebP as the output if the site accepts it; otherwise choose JPG.
- Set the quality to about 70 and compress. Check the result size shown before downloading.
- Still too big? Set a maximum width, such as 1600 px for full-screen use or 1000 px for a profile or form upload, and compress again.
- Lower the quality in steps of 5. Below about 50, photos start to look blocky.
Choosing a quality setting
| Quality | Typical use | Visible change |
|---|---|---|
| 85–95 | Portfolios, product photos | Hard to see |
| 70–80 | Websites, email, social posts | Only on close inspection |
| 50–65 | Strict upload limits, thumbnails | Softer detail, some artefacts |
What compression removes
The compressed file contains only the image. Camera metadata such as GPS location, device model and date is not carried over, which is also a privacy benefit when sharing photos.
PNG files stay lossless when you keep the PNG format, so the saving is small. For screenshots and graphics, WebP usually gives the best size while keeping transparency.
How to use it
- 1Choose or drop an image
- 2Set the quality, output format and an optional maximum width
- 3Compress, compare, then download
Questions
How much smaller will my image get?
It depends on the image. Photos saved at quality 70–80 often shrink by half or more; screenshots and already-compressed files shrink less. The real result is shown before you download.
Why did my PNG barely shrink?
PNG is lossless. Choose WebP or JPG as the output format for a much smaller file.
Does it change the dimensions?
Only if you set a maximum width. Otherwise the pixel size stays the same.
What happens to my file?
It is processed on GlobTool's server and deleted automatically after about an hour.