QuickFileKit
Honest measurements
Every output size and saving percentage comes from the file your browser actually generated.
Compress Image
Reduce image file size without sending files to a server. Process several images, compare actual output sizes, and keep only the results that work for you.
Drop images here
JPEG, PNG, or WebP · up to 40 MB each
Add images to begin. WebP usually gives the smallest file while preserving transparency.
Your files stay on your device.Private by design — this tool processes files locally in your browser.
Found a problem or have an idea?
Send a short report and receive a tracking code. Do not include passwords, private files, or personal information.
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How to use it
- Choose or drop one or more JPEG, PNG, or WebP images.
- Adjust quality; each image is processed in your browser.
- Compare the measured sizes, then download individual results or all compressed files.
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Why use this tool?
Batch workflow
Compress multiple images in one pass and download the useful results together.
Responsive processing
Image encoding runs in a worker when supported so the page stays responsive.
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Related tools
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Frequently asked questions
Are my images uploaded?
No. Images are decoded and compressed locally in your browser. QuickFileKit does not receive the source or generated files.
Why can a compressed file be larger?
Already optimized images or format changes can produce a larger result. QuickFileKit shows the real size and lets you keep the original.
Does compression reduce image dimensions?
No. This tool keeps the pixel dimensions and changes encoding quality. A future resize tool will handle dimensions separately.