Image Compressor Pro
Compress JPG, PNG, and WebP images locally — by quality or to an honest target file size.
Shrink JPG, PNG, and WebP files with true per-image control: pick an output format and quality, or set a target file size and let PDFMiniFly search for the honest best quality that fits. Everything is encoded inside your browser — your photos are never uploaded.
How to use Image Compressor Pro in 3 simple steps
Select Your Files
Drag and drop your document directly into the browser. Your file stays on your hardware and is never transmitted across the network.
Configure Options
Customize parameters, page sequence, orientation, or compression presets with instant interactive live feedback.
Save & Download
Click the action button. The new document is compiled in memory and downloaded straight to your device.
Frequently Asked Questions
How does the target-size mode work?
PDFMiniFly repeatedly encodes your image at different quality levels, fully in your browser, and reports the real result. If the target cannot be met without destroying the image, it says so instead of pretending it succeeded.
Is PNG transparency preserved?
Yes — PNG and WebP exports keep the original alpha channel. JPG output flattens transparency onto white because the JPG format has no transparency.
Are my files uploaded to a server?
No. PDFMiniFly processes everything locally inside your browser. Your document never leaves your device, and once the app is installed it also works offline.
Explore Other PDF Tools
View all 49 tools →Image Resize & Convert
Resize and convert images between JPG, PNG, and WebP with aspect-ratio and preset control.
Advanced Crop Studio
Interactive crop with zoom, pan, rotate, and flips — exported at true pixel resolution.
Local Background Remover
Remove backgrounds around people with a local AI model — or by color detection. No uploads, ever.