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Bulk Image Resizer

Resize a whole batch of photos at once — free, private, right in your browser.

Drag & drop multiple images, or click to browse

Upload multiple images to resize them all at once.

What Is a Bulk Image Resizer?

Resizing images one at a time gets tedious fast when you're prepping a whole folder — product photos for a store, a batch of screenshots, a gallery of event photos. This tool applies one resize setting to every image you upload, then packs every result into a single ZIP so you download it all at once, instead of clicking through a save dialog dozens of times over.

How to Use This Tool

  1. 1Upload multiple imagesDrag and drop as many as you need, or click to browse and multi-select.
  2. 2Choose a scale modeScale every image by a percentage, or cap each one to a max width/height.
  3. 3Resize allEvery image is resized in your browser, keeping its own aspect ratio.
  4. 4Download the ZIPAll resized files are bundled into one ZIP download.

Who Actually Reaches for a Bulk Resizer

  • Online sellers prepping a batch of product photos before uploading to a marketplace, where every listing needs images under a certain pixel or file size.
  • Photographers delivering a shrunk-down "web preview" set alongside full-resolution originals, without touching the originals themselves.
  • Anyone clearing out a phone's camera roll before a cloud backup, where shrinking hundreds of photos first meaningfully cuts upload time and storage used.
  • Bloggers and content creators preparing a whole gallery of images for a single post, keeping every file under a size that won't slow the page down.

Good to Know

  • Percentage mode scales every image relative to its own original size — good when your batch has mixed dimensions and you want a consistent shrink.
  • Max Dimension mode caps the longest side of each image to a pixel limit without upscaling anything already smaller than that — good for a size ceiling across a batch.
  • Each image keeps its own original aspect ratio; nothing is stretched or cropped.
  • A batch that's all going to the same fixed slot (uniform product photo tiles, for instance) is usually a better fit for the Social Media Resizer's fixed dimensions than this tool's proportional scaling.
  • Nothing is uploaded to a server — every resize and the ZIP itself are built entirely in your browser.

Frequently Asked Questions

How many images can I resize at once?

There's no hard cap in the tool itself, but since everything runs in your browser, very large batches (hundreds of high-resolution photos) will be limited by your device's memory rather than by the tool.

Will all my images end up the same exact size?

Not with Percentage mode — each image is scaled relative to its own original dimensions, so a batch of mixed sizes stays mixed, just proportionally smaller. Use the single-image Resizer if you need one exact pixel size for every file.

What's the difference between Percentage mode and Max Dimension mode?

Percentage scales every image by the same ratio, so a 2000px and a 500px photo both shrink by, say, 50% and stay proportionally different. Max Dimension instead caps every image's longest side to one number, which brings a mixed batch closer to a consistent overall size.

What format are the resized images saved in?

Each image keeps its original format (JPEG, PNG, or WebP) — only the dimensions change.

Can I remove one image from the batch before resizing?

Yes — each uploaded image has its own remove button in the list, so you can drop any file before clicking Resize All.

Is my image uploaded to a server?

No. Every image is resized locally in your browser, and the ZIP is assembled there too.