Bulk Image Resizer & Compressor
Process a whole folder of images in one go. Set a maximum dimension or a percentage, choose the output format and quality, optionally cap each file to a KB limit, then download everything as a single ZIP. All in your browser — nothing is uploaded.
Resize
Longest side, in pixels. Images are only shrunk, never enlarged.
Output format
Drop images here, or click to chooseAdd as many as you like — processed together, nothing uploaded
Every image is decoded, resized and re-encoded in your browser and packed into a ZIP locally — nothing is uploaded. “Keep” format outputs JPG for photos, PNG for PNGs, WebP for WebP. A per-image KB limit will also downscale if quality alone can't hit the target.
How to use it
- Choose your resize rule, output format and quality (and a per-image KB limit if you need one).
- Drop in as many images as you like.
- Click Process, then Download all as ZIP.
FAQ
- How many images can I add?
- As many as your device's memory allows — they're processed one after another, entirely in the browser.
- Are the images uploaded?
- No. Decoding, resizing and zipping all happen locally.
- What does 'Keep' format do?
- Outputs JPG for JPGs, PNG for PNGs and WebP for WebP, so transparency and photo quality are preserved appropriately.
Related tools
- Add Watermark to ImageStamp a text or logo watermark on one image or a whole batch.
- Image ResizerResize a photo by pixels, percentage or cm / mm / inch — with an optional KB limit.
- Resize Image in CM, MM or InchesSet an image's real-world size in centimetres, millimetres or inches at a chosen DPI.
- Compress Image to a Target KBShrink a JPG / PNG / WebP to a specific size — 20 KB, 50 KB, 100 KB, 200 KB.
- Increase Image Size in KBPad a too-small image up to a minimum file size some portals require.
Free to use, no sign-up. Calculations run in your browser — nothing you type is sent to a server. These tools are for general information only, not professional advice. See the full tool list.