Image Compressor
Reduce image file size without uploading your files anywhere. Adjust quality and compare before/after sizes instantly.
Drag and drop an image here, or
JPEG, PNG, or WebP · up to 25MB · processed locally in your browser
How to Use
- 1Drag and drop an image, or click to browse for one.
- 2Choose an output format and adjust the quality slider.
- 3Compare before/after size and download the result.
Features
- Supports JPEG, PNG, and WebP
- Adjustable quality for JPEG and WebP
- Before/after size comparison
- 100% client-side processing, nothing is uploaded
Example
Upload any photo and drag the quality slider to see the size trade-off update in real time.
About This Tool
Image compression reduces file size by re-encoding an image, typically by allowing small, often imperceptible quality loss in exchange for a smaller file. This is useful for speeding up websites, reducing storage use, or fitting under an upload size limit.
This tool uses the HTML canvas element built into your browser to re-encode images locally. Your original file is never uploaded to a server; everything happens on your device.
FAQ
- Are my images uploaded to a server?
- No. Compression happens entirely in your browser using the canvas API. Files never leave your device.
- Which format should I choose?
- WebP generally gives the best compression for photos. JPEG is widely compatible. PNG is best for images that need transparency or sharp edges, but does not support a quality slider.