Image Compressor is a free online tool for compressing images with adjustable quality and drag-to-compare preview. Supports PNG, JPG, WebP. All processing runs locally in your browser.
What is the Image Compressor?
Compress images with adjustable quality using a drag-to-compare preview. Supports PNG, JPG, and WebP formats. No data is uploaded to any server — all processing uses the HTML5 Canvas API.
How to Compress an Image
- 1
Drop or select an image
Drag and drop an image onto the drop zone, or click to browse. Supports PNG, JPG, WebP, GIF, BMP, and SVG input.
- 2
Adjust quality
Use the quality slider to balance file size and image quality. Lower quality means smaller files. PNG input is lossless — the quality slider is hidden for PNG.
- 3
Compare and download
Drag the comparison slider to see original vs. compressed side by side. Download the result or copy it to clipboard.