Resize multiple images instantly with ImgTool.app. Free online bulk image resizer that works 100% locally in your browser. Resize JPG, PNG, GIF, WebP, and HEIC for social media or web use without losing quality. Perfect for batch processing photos.
Drop, select, or paste images to start (max 15).
All resizing happens in your browser—no uploads, ensuring privacy and speed.
Resize multiple images at once with shared settings.
Download all resized images in a convenient zip file.
Enter custom width/height or use presets for social media like Instagram, YouTube.
Adjust quality, resize percentage, and download in JPG, PNG, or WebP.
Resize JPG, PNG, GIF, WebP, and HEIC images effortlessly.
ImgTool.app is a simple, free bulk image resizer tool that processes everything client-side for maximum privacy. Whether you're preparing batches of photos for e-commerce, blogs, or social media, our online bulk image resizer helps you achieve perfect dimensions quickly without uploading your files.
For single images, use our image resizer or cropper. Compress batches with the image compressor. All tools run locally in your browser.
Use percentage scaling for uniform reduction, or fixed dimensions for consistent sizes. Lock aspect ratio to avoid distortion. For social media, presets ensure perfect fits.
Bulk resizing is best when a whole folder needs the same output rules: product photos for a shop, blog images for a content update, thumbnails for a gallery, or client photos that need smaller copies for email. Set the longest edge or target dimensions once, choose JPG, PNG, or WebP output, and download the finished set as a zip.
Large batches still depend on your browser memory, so if you are working with very high-resolution camera files, start with a smaller batch and confirm the output looks right before processing everything. For one hero image that needs careful framing, use the single image resizer or cropper first.