Free
Bulk Resize Photos
Resizes a whole batch of images inside your browser without uploading them. You do not need an account, there is no limit, and it can resize to hit a target file size.
FreeBeginnerWeb
Overview
Bulk Resize Photos shrinks a folder of images at once. The work happens inside your browser, and the vendor states nothing is uploaded, which is also why there is no cap on how many images you run. You can resize by exact pixels, by percentage, by longest side, or by target file size. In that last mode you name a file size, and it works out the quality needed to come under it.
Where your target shape does not match a photo, padding letterboxes it onto a background colour instead of stretching it. A batch comes back as a ZIP with the original filenames kept. It is free, with no paid tier, and you do not need an account. There are extensions for Chrome, Edge and Firefox.
Key features
✓Batch resize with no upload, per the vendor
✓Resize by exact pixel width & height
✓Resize by percentage
✓Resize by longest side
✓Resize to a target file size
✓Padding letterboxes in any colour, or transparent for PNG, WebP & AVIF
✓Quality slider for JPEG & WebP output
✓Reads JPG, PNG, WebP, AVIF, TIFF, GIF & more
✓ZIP download with original filenames
✓Chrome, Edge & Firefox extensions
When to use
Use Bulk Resize Photos if:
- You have many photos to resize and doing them one at a time is the problem.
- Your images are private. Nothing is uploaded, so client and unreleased work stays on your machine.
- You have a file size limit to meet. The by-file-size mode targets a number rather than making you guess at quality.
- Your batch mixes portrait and landscape shots. Resizing by longest side treats them consistently.
- You need exact dimensions. Padding fills the leftover space with a colour instead of stretching the photo.
- You want the filenames back as they were. The ZIP keeps them.
When NOT to use
Skip Bulk Resize Photos if any of these describe you:
- You need to crop, or to rename the files. There is no cropping or renaming here. BIRME does both, and crops with focal detection to keep the subject in frame.
- Getting the smallest possible file is the goal. Squoosh shows you the quality trade-off as you make it. Compare other image compressors.
- You have one image. ImageResizer.com and other image resizers are less setup for a single file.
- Your computer is old and the batch is large. The work runs on your own machine, so your hardware sets the speed rather than a server does.
Frequently asked questions
Yes. The vendor states it is 100% free with no sign-up and unlimited usage. There is no paid tier capping the batch size or the output quality, which is possible because your machine is doing the work rather than its servers.
No. The vendor states the resizing happens in your browser with no uploading, so the images never reach a server. That is why there is no limit on how many you can process, and why it works for client photos or anything you cannot send to a third party.
Use the by-file-size mode: you name the target, such as a few hundred kilobytes, and it works out the dimensions and quality needed to land under it. That avoids resizing, checking the file and trying again. Use it when a form or a website enforces a maximum.
Resizing by longest side handles a mixed batch of portrait and landscape photos consistently, since each is scaled by its own longest edge. If you need every image at one exact size, padding fills the leftover space with a colour of your choice, white by default. Switch padding off and the photo is stretched to the target shape instead. There is no crop-to-fill option.
It reads common photo formats, including JPG, PNG, WebP, AVIF, TIFF, GIF and BMP. A single file downloads as JPEG, PNG, WebP or AVIF, depending on what your browser supports. A batch comes back as a ZIP archive with the original filenames preserved, so you can drop the results straight back where the originals came from.
Resizing down always discards pixels. The quality slider controls how hard JPEG and WebP compression is applied on top of that, so setting it lower makes smaller files with more visible artefacts. Keep your originals: a resized copy cannot be turned back into the full-size photo.
Alternatives to Bulk Resize Photos
Freemium
Freemium
ImageResizer.com
Browser tool that resizes, crops, compresses and converts images with no account, free up to 5 images a batch and 10 MB a file.
BeginnerWeb
Free
