Image Compressor
Compress and convert images entirely in your browser. Reduce file size, resize, and switch formats — no server upload, 100% private.
Drop your image here
or click to browse
Supports PNG, JPEG, WebP, and more
Need to compress screen recordings too? Zumie creates lightweight, stunning recordings automatically.
Stunning recordings with automatic zoom, beautiful backgrounds, and clean transitions. No editing needed.
Install Zumie — FreeCompress PNG, JPEG & WebP Images — No Upload Required
Reduce image file sizes directly in your browser. Adjust quality, resize, and convert between PNG, JPEG, and WebP. See a before-and-after comparison before downloading.
Features
Multiple Output Formats
Export as JPEG, PNG, or WebP to match your use case. WebP typically offers the best compression.
Quality Slider
Fine-tune compression from 1% to 100% for JPEG and WebP. See file size change in real time.
Resize with Max Width
Optionally resize images by setting a maximum width. Great for preparing images for web use.
Before & After Comparison
Preview compressed output alongside the original to verify quality before downloading.
Batch-Friendly Workflow
Quickly upload a new image after downloading the previous one for rapid batch processing.
Complete Privacy
All compression happens in your browser via the Canvas API. Images never leave your device.
How to Use Image Compressor
Upload your image
Drag and drop, click to browse, or paste from your clipboard.
Adjust compression settings
Choose an output format, set the quality level, and optionally resize.
Download the compressed image
Review the size savings and click Download to save the optimized file.
Frequently Asked Questions
What is the best format for web images?
WebP offers the best compression-to-quality ratio for most web images. Use JPEG for photos where browser compatibility is a concern, and PNG only when you need transparency.
Will compression reduce image quality?
At moderate quality levels (60–80%), the difference is nearly invisible to the human eye while file sizes shrink significantly.
Can I compress PNG files?
Yes. You can keep the PNG format (lossless) or convert to JPEG/WebP for lossy compression with much smaller file sizes.
Is there a file size limit?
No hard limit. Very large images may take a moment to process since everything runs locally in your browser.