Compress Any Image
In Seconds
Shrink JPG, PNG, WebP, GIF, SVG, AVIF, BMP, TIFF and ICO files by up to 90% — entirely in your browser. Nothing is ever sent to a server.
Drop images here
or click to browse · Any format supported
Three Steps to Smaller Images
Drag and drop any image files onto the tool, or click to browse. Supports JPG, PNG, WebP, GIF, SVG, AVIF, BMP, TIFF, ICO and more.
Use the quality slider to control the compression ratio. Choose to keep the original format or convert to WebP for maximum compression.
Download individual compressed files or grab all of them at once. See exactly how much space you saved on each image.
Everything You Need, Nothing You Don't
All processing happens in your browser using the Canvas API. Your images never leave your device.
No uploads, no server round-trips. Compression is instant — even for large batches of high-resolution images.
Compress JPG, PNG, WebP, GIF, SVG, AVIF, BMP, TIFF and ICO. Convert between formats for even greater size reduction.
Upload and compress hundreds of images at once. Download them all in one click.
No file size caps, no quantity restrictions, no registration. Compress as many images as you need, completely free.
Fine-tune the compression level with a precise quality slider. Balance visual fidelity against file size for every use case.
Frequently Asked Questions
Is WriteDroid really free to use?
Yes — completely free. No subscription, no registration, no hidden fees. You can compress unlimited images with no restrictions.
Are my images uploaded to a server?
No. Everything runs entirely in your browser using the HTML5 Canvas API and the FileReader API. Your images are never sent to any server, ensuring complete privacy and security.
What image formats does WriteDroid support?
WriteDroid supports JPG/JPEG, PNG, WebP, GIF, BMP, AVIF, TIFF/TIF, SVG, and ICO. You can also convert between formats — for example, converting a PNG to WebP often reduces file size by 50–80%.
How much can I reduce an image's file size?
Results vary by image and format, but typical reductions range from 20% to 90%. Converting to WebP tends to achieve the greatest savings. The quality slider gives you precise control over the trade-off between file size and visual quality.
Will compressing images reduce their resolution or dimensions?
No. WriteDroid reduces file size through compression, not by resizing. The output image retains the same pixel dimensions as the original.
Can I compress multiple images at once?
Yes. You can upload dozens or hundreds of images at once, and WriteDroid will compress them all simultaneously. Use the "Download All" button to get every compressed file in one go.
What quality setting should I use?
For web images, 70–80% quality is usually ideal — excellent visual quality with significant size reduction. For print or archival use, 85–95% is recommended. For thumbnails or previews, 50–65% is fine.