What Is the IMG369 Batch Image Resizer?
The Batch Image Resizer scales down up to 20 photos at once by a chosen percentage. Each photo resizes proportionally from its own original dimensions, so a mixed batch of portrait and landscape photos all shrink correctly without distortion, then downloads as one ZIP.
It exists for the case where the single-photo Image Resizer's one-file-at-a-time workflow is too slow: a full camera roll export, an entire product shoot, or a folder of screenshots that all need to shrink together before they go anywhere else.
How It Works
Each photo is redrawn onto an HTML canvas at the chosen percentage of its own original width and height, entirely in your browser. The new dimensions are shown next to each thumbnail, and the whole batch updates instantly when you change the percentage. Because every image resizes from its own starting dimensions rather than a fixed target, the tool doesn't need to know anything about your photos in advance, it just works out each one's math independently.
Why Percentage Scaling Instead of Fixed Pixels
A batch of real-world photos almost never shares one exact resolution: a phone photo, a downloaded graphic, and an old scan can easily have three completely different pixel dimensions. Setting one fixed target size, like 1200x800, would stretch or squash whichever images don't already match that aspect ratio. A percentage sidesteps that entirely: 50% turns a 4000x3000 photo into 2000x1500 and a 1200x1600 photo into 600x800, each one keeping its own original proportions. That's why this tool, unlike the single-image resizer, doesn't offer exact pixel input at all, it would give a false sense of precision across a mixed batch.
Common Uses
Shrinking a folder of photos before uploading them to a website or platform with a file size limit, preparing a batch of images for email attachments that would otherwise be too large to send together, cutting down a camera roll export before archiving it to save storage space, or standardizing a product photo set to a smaller, more consistent footprint before a bulk upload.
IMG369 vs. Other Ways to Resize a Batch of Photos
Windows Photos and Mac Preview both offer some form of bulk resize, but the exact steps and options vary between OS versions and can be easy to miss if you don't already know they're there. Online bulk resizers exist too, but they require uploading your whole batch to a server, and often watermark or limit the free tier. A Photoshop batch action can do it precisely, but that means owning the software and setting up an action, a lot of overhead for an occasional resize job. IMG369 resizes up to 20 photos by percentage right in the browser, with nothing uploaded and no software to install.
| Method | Cost | Photos leave your device | Setup needed |
|---|---|---|---|
| IMG369 | Free | No | None |
| OS built-in batch resize (Photos/Preview) | Free | No | Varies by OS version |
| Typical online bulk resizer | Free with limits, paid for more | Yes, uploaded to a server | None |
| Photoshop batch action | Paid software | No | Action setup required |
Summary
IMG369's Batch Image Resizer scales up to 20 photos at once by percentage, each one proportional to its own original size, with individual downloads or a one-click ZIP, entirely inside your browser with no upload and no signup. The sections above cover why percentage scaling beats a fixed pixel target for mixed batches; the FAQ below covers batch limits and download options.
Frequently Asked Questions
How many images can I resize at once?
Up to 20 images in a single batch.
Why percentage instead of exact pixels?
Batches usually contain photos of different original sizes. A percentage scales each one down proportionally from its own size, keeping every image's aspect ratio intact without you setting dimensions one by one.
Can I download just one image instead of the whole ZIP?
Yes, each image in the grid has its own Download link if you only need a specific file.
Are my photos uploaded to a server?
No. Every image is resized entirely in your browser using the Canvas API. Nothing is uploaded.