Free Online Image Resizer — Your Photos Never Leave Your Device
ResizePics.site resizes and compresses JPG, PNG and WebP images directly in your browser. Unlike most online resizers, nothing is uploaded to a server: the image is decoded, scaled and re-encoded on your own computer or phone. That makes it fast, free of upload limits, and safe for private photos, ID scans and documents.
How to resize an image
- Open your image. Drag and drop a photo onto the page, or click the upload box to choose a file.
- Pick a size. Use Target file size to get a photo under a limit such as 20 KB or 50 KB (optionally with exact dimensions in px, cm or mm), Percentage Scale to shrink proportionally, or Specific Dimensions for a width or height in pixels.
- Choose format and quality. JPEG and WebP give the smallest files; in Target file size mode the quality is chosen for you; otherwise lower the quality slider to reduce the size in KB. PNG is lossless and best for screenshots and graphics.
- Download. The Optimized size updates live, so you know the final file size before you save it.
Why resize images in the browser?
Privacy: your files are never sent anywhere, so there is nothing to leak, store or delete. Speed: there is no upload or download wait — results appear instantly, even for large photos. No limits: no sign-up, no watermark, no daily cap.
Frequently asked questions
Are my images uploaded to a server?
No. Resizing and compression happen entirely in your browser using the HTML5 Canvas API. Your images never leave your device.
Which image formats are supported?
You can open any image your browser can display (JPG, PNG, WebP, GIF, BMP, AVIF in most browsers) and export it as JPG, PNG or WebP.
How do I make an image smaller in KB?
Pick Target file size, type the maximum (for example 20 KB) and the tool finds the best quality that fits. You can also set exact dimensions in pixels, cm or mm. The result is shown before you download.
Does it work offline?
Once the page has loaded, all processing runs locally, so you can keep resizing even if your connection drops.
Is ResizePics.site free?
Yes. It is free to use with no sign-up, no watermarks and no limits on the number of images.