Free Online Image Compressor
Target specific file sizes in KB. Our intelligent lossy compression shrinks image weights while retaining stunning visual quality.
Drop files here. 100 MB maximum file size
Drag or click to upload your logo
300+ formats supported
We support more than 25600 different conversions between more than 300 different file formats. More than any other converter.
Fast and easy
Just drop your files on the page, choose an output format and click "Convert" button. Wait a little for the process to complete. We aim to do all our conversions in under 1-2 minutes.
In the cloud
All conversions take place in the cloud and client-side processing, consuming minimal capacity from your computer.
Custom settings
Most conversion types support advanced options. For example with a video converter you can choose quality, aspect ratio, codec and other settings, rotate and flip.
Security guaranteed
We delete uploaded files instantly and converted ones after 24 hours. No one has access to your files and privacy is 100% guaranteed. Read more about security.
All devices supported
GlobeOptimiser is browser-based and works for all platforms. There is no need to download and install any software.
How to use this tool
- Drag and drop your images into the upload container.
- Set the target file size slider to your preferred KB limit.
- Click Process Files to shrink files and download.
Frequently Asked Questions
How does target KB compression work?
Our engine runs iterative compression sweeps, modifying export quality parameters until the file hits your specified limit.
Will my images look blurry?
No, the compression scales color densities that are invisible to human eyes, maintaining crisp details.
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