Image Compressor
Compress and resize images in your browser. No uploads — your images never leave your device.
About the Image Compressor — Compress Images Online for Free
Most online image compressors upload your files to a remote server — a privacy risk when working with screenshots containing sensitive data, client materials, or personal photos. This compressor uses the browser's Canvas API to resize and re-encode images entirely on your device. Drag and drop any image (PNG, JPG, WebP, GIF), adjust the quality slider from 10% to 100%, set a maximum width for resizing, and download the optimized JPEG result. The tool shows original vs. compressed file size and percentage savings in real time.
Common use cases
- Optimize blog images to improve page load speed
- Compress product photos for e-commerce listings
- Reduce image size for email attachments
- Resize screenshots before sharing in documentation
- Prepare images for social media upload size limits
Why client-side?
Every byte you paste, type, or upload here is processed entirely inside your browser. Nothing is sent to a server, logged, or stored. That means it's safe to use this tool on production secrets, customer data, internal logs, and any input you would not paste into a hosted SaaS formatter.
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Frequently Asked Questions
- How do I compress an image without losing quality?
- Upload your image and set the quality slider to 75-85%. At this range, the visual difference is imperceptible to most people while reducing file size by 50-70%.
- Is my image uploaded to a server?
- No. The compression uses the browser's Canvas API. Your image is processed entirely on your device and never sent to any server.
- What image formats are supported?
- You can upload PNG, JPG, JPEG, GIF, WebP, and most other browser-supported image formats. The compressed output is saved as JPEG.
- Can I resize images too?
- Yes. Set a maximum width and the tool proportionally resizes the image while compressing it. The original aspect ratio is always preserved.