How to resize and compress images with ShrinkIt

ShrinkIt is a free image resizer and compressor that runs entirely in your browser. Open shrinkit.dusrel.com, add your images, and get smaller files back — nothing is uploaded to a server, there is no sign-up, and there are no watermarks on your output.

It handles JPG, PNG, GIF, and WebP images, and you can process several images in one batch.

Resize and compress an image

1. Open shrinkit.dusrel.com.
2. Add your images with the dropzone or the file picker. You can add more than one image at a time.
3. Choose how to resize each image: by percent of the original size, by exact pixels, or in centimetres or inches.
4. Pick an output format (JPG, PNG, WebP, or GIF). For JPG, you can also set the quality from 0 to 100 — lower quality means a smaller file.
5. Start the processing and wait for the results. Each finished image can be downloaded on its own, or you can download the whole batch as a ZIP file.

That is the whole flow. Your original files are never sent anywhere: the resizing and encoding happen on your own device.

Tips

• Start from percent when you just need smaller files. Resizing to 50% is usually enough for sharing photos online, and you do not need to work out pixel dimensions.
• Use exact pixels when a site asks for them. Profile pictures, post covers, and form uploads often specify a size like 800 × 800 — enter those numbers directly.
• Watch the format when transparency matters. JPG has no transparency, so a transparent PNG converted to JPG gets flattened onto a white or black background. Keep PNG or WebP if you need to preserve transparent areas.
• EXIF data is stripped by default. Location and camera details are removed from your output images, which is what you want before sharing photos publicly. There is an option to preserve the source EXIF data if you need it.
• Very large images may be refused with a clear error. Browsers have real memory limits for image processing, so extremely large files cannot always be handled. If that happens, try a smaller source image first.
• WebP and GIF do not carry DPI metadata. There is no standard container for it in those formats, so ShrinkIt does not pretend otherwise — DPI values are written only where the format supports them (JPG and PNG).