A product catalog looks broken when its thumbnails arrive in fourteen different sizes. This bulk image resizer takes the whole set, applies one rule, exact pixels, a maximum edge, or a percentage, and returns a ZIP where everything matches. It's the quickest way to resize multiple images at once without opening an editor: load the files, type 1600 into the max width field, and every hero shot scales down to spec while smaller files pass through untouched. Because the canvas work happens in your browser, you can batch resize photos online without product shots leaving the machine. Keep the Lock aspect ratio switch on and mixed vertical and horizontal sources still come out undistorted.
Always freeNo sign upRuns in your browser
Drop files here, or click to browse
Drop one or many images · automatic bulk mode for multiple files
Bulk supported. Drop multiple files and they'll be processed in a queue with a single ZIP download. Same settings apply to every file.
Drop any number of images, up to 50 MB apiece. When you start with a single file, its preview appears and its real dimensions auto-fill the width and height boxes.
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Pick Exact px, Max edge, or Percent
Exact px forces fixed dimensions, Max edge caps the longest side without upscaling, and Percent scales each image relatively. The Lock aspect ratio switch protects mixed orientations from distortion.
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Resize and download
Press Resize. Each output keeps its original format and picks up a resized- prefix, and a multi-file run downloads together as resized-images.zip.
Why Bulk Image Resizer
Single image or hundreds, automatic bulk mode.
Three modes: exact px, max edge, or percent scale.
High-quality Canvas resampling. 100% client-side.
Common questions
How do I resize multiple images at once to a uniform 1600px?
Switch to Max edge mode and enter 1600 for both max width and max height. Wide shots come out 1600 across, tall shots 1600 high, and every image keeps its own proportions. That's the standard recipe for a consistent product catalog.
Will the bulk image resizer stretch photos that have different shapes?
Only if you use Exact px with the aspect lock off, because that mode forces every file into the same width and height regardless of shape. For mixed batches, Max edge or Percent are the safe modes since both preserve each image's proportions.
Does Max edge mode upscale the small images in my batch?
No. The scale factor is capped at 1, so an 800 px icon stays 800 px even when the limit is 1600. That's deliberate: blowing small images up in a batch just manufactures blur across your whole set.
What does Percent mode do differently across a batch?
It scales each file relative to its own dimensions, so 50 percent turns a 4000 px photo into 2000 px and a 1200 px photo into 600 px. Use it to lighten a folder proportionally; use the pixel modes when outputs must match each other.
Can I batch resize photos online without them touching a server?
Yes. The resampling runs on a canvas inside your browser with high-quality smoothing enabled, and nothing is transmitted anywhere. Unreleased product shots and embargoed press images stay on your machine the entire time.
Why test one product shot before resizing the entire catalog?
Because a single dropped file shows a preview and loads its native dimensions into the fields, you can sanity-check the output size math in one click. Confirm the sample, then add the rest of the catalog and run the same settings across all of it.
Is the output format changed when images are resized in bulk?
No, a JPG comes back as a JPG and a PNG as a PNG, re-encoded at high quality after scaling. If you also want a format change, run the batch through the Bulk Image Converter after resizing.
Is this free batch image resizer capped at a number of files?
No fixed cap; the free batch image resizer works through whatever you drop until your browser runs low on memory. As a batch image resizer it applies one rule, exact pixels, a max edge, or a percentage, to every file, and a multi-file run downloads together as resized-images.zip.
What's the catch with a bulk image resizer online free like this?
There isn't one. The bulk image resizer online free has no watermark, no sign-up, and no per-file charge, since it runs in your browser rather than on a paid backend. The bulk image resizer online handles a full catalog in a single pass and hands back one ZIP.
Is this batch image resizing tool actually free, or is it trial software?
It's a web page, not a download, so calling it batch image resizer freeware is close but not exact; there's nothing to install or license. This batch image resizing tool opens in any browser and runs fully client-side, which is why there's no trial timer or paywall.
Can I resize multiple images online to different target sizes in one go?
One run uses one rule, so to resize multiple images to two different targets you'd run two passes with Clear between them. Within a single pass you resize multiple images online to the same spec, which is exactly what a consistent catalog or gallery needs.
How do I resize multiple photos that are a mix of portrait and landscape?
Turn on Lock aspect ratio and use Max edge or Percent mode, which read each file's own size before scaling. That's the safe way to resize multiple photos dimensions across a mixed shoot, since both modes keep proportions and never squash a vertical into a square.
Will a large multi photo resize slow my browser to a crawl?
A big multi photo resize works one file at a time, so peak memory tracks your largest single image, not the whole batch. The ZIP does build up in memory at the end, though, so for a folder of many hundreds, split it into a couple of runs to keep things smooth.
Is there any difference between the free batch photo resizer and the picture version people search for?
None, it's the same page. Whether you call it a free batch photo resizer or a free batch picture resizer, you get the identical modes, the Lock aspect ratio switch, and a resized- prefix on every output. The wording changes; the batch behavior doesn't.