Can it enlarge small images?

No. This only shrinks — an image already smaller than your box comes through untouched. To enlarge, use Image Size on a single file, though enlarging adds no detail that was never captured; it just makes the pixels bigger.

How many files can it take at once?

There is no cap — it processes as many as you pick. How fast depends on your computer and the image sizes, not on a gate we set, because we did not set one.

Why one file at a time instead of a zip?

Browsers block downloads fired back to back, so each one is triggered a little apart from the next to let them all land. The first time, your browser may ask whether to allow this site to download multiple files; once you allow it they save into your Downloads folder automatically.

Are my images uploaded? Is it free?

Nothing is uploaded — it all runs in your own browser. Free, no sign-up, no usage limit.

Resize images in bulk

No file cap, proportional fit, original format. Local processing, nothing uploaded.

Use it online now

Pick a pile of images, set a maximum width and height, and they download one by one.

The rule is simple: you set a "no larger than W×H" box, and each image scales by its own ratio to fit exactly inside it. It only shrinks — an image already smaller than the box comes through untouched rather than being stretched (enlarging cannot create detail that was never there). The format stays as it was: JPG remains JPG, PNG remains PNG; only JPG gets a white backing, because JPG has no transparency. Scaling uses high-quality resampling. There is no cap on the number of files, and the width and height fields have a floor of 1 with no ceiling — how much you can process depends on your computer, not on a gate we set. A file that will not open is skipped automatically without stopping the batch. It all runs in your own browser; the images are never uploaded.

Key features

No cap on files

Process as many as you pick; width and height have a floor of 1 and no ceiling.

Proportional fit

Each image scales by its own ratio, so nothing is distorted — and it only shrinks.

Original format kept

JPG stays JPG, PNG stays PNG. JPG gets a white backing because it has no transparency.

Broken files skipped

A file that will not open is skipped rather than halting the whole batch.

How to use

1
Pick the images

Select hundreds at once — there is no limit on the count.
2
Set the maximum size

1920×1080, say — each image scales proportionally to fit inside that box.
3
Start

Each finished image downloads in turn, triggered slightly apart from the next.
4
Collect them from Downloads

Your browser may first ask whether to allow multiple downloads; after you allow it they save automatically.

FAQ

Can it enlarge small images?: No. This only shrinks — an image already smaller than your box comes through untouched. To enlarge, use Image Size on a single file, though enlarging adds no detail that was never captured; it just makes the pixels bigger.
How many files can it take at once?: There is no cap — it processes as many as you pick. How fast depends on your computer and the image sizes, not on a gate we set, because we did not set one.
Why one file at a time instead of a zip?: Browsers block downloads fired back to back, so each one is triggered a little apart from the next to let them all land. The first time, your browser may ask whether to allow this site to download multiple files; once you allow it they save into your Downloads folder automatically.
Are my images uploaded? Is it free?: Nothing is uploaded — it all runs in your own browser. Free, no sign-up, no usage limit.

Try Resize images in bulk now

Runs fully in your browser · no install · no signup · images never uploaded

Use it online now