Is it safe to use for a document with personal details in it?

That is the design goal: the document stays on your device, so a statement, a contract or an ID photo is never transmitted for processing. Nothing here needs an internet connection once the page has loaded, apart from engines that fetch their own model data.

Will it work on a phone?

Yes. The layout adapts to a small screen and the processing runs in the mobile browser, so a photo or a downloaded document can be handled on the device it arrived on.

Will I notice a quality difference?

Re-encoding always costs something, so start at the lighter setting and only push further if the size is still wrong. The before-and-after figures on the page are the honest way to decide.

Do I need to pay or register?

No. Every tool on this site is free, with no account, no email and nothing to install.

Resize by Aspect Ratio

Crop or fit to 1:1, 4:3, 16:9 and custom ratios.

Drag & drop your images here

Batch: up to 50 images at once

Add at least one image.

Loading tool…

About Resize by Aspect Ratio

Resize by Aspect Ratio is here for changing image dimensions to a target size: crop or fit to 1:1, 4:3, 16:9 and custom ratios. It takes JPG, JPEG, PNG and 9 more and produces JPG, JPEG, PNG, WEBP. Files up to 100 MB each, 50 at a time, and the work happens on your own machine rather than on a server.

Reach for it when changing image dimensions to a target size is a one-off rather than a workflow: one file, one result, no account in front of it.

How to use Resize by Aspect Ratio in 3 steps

Add one image or a batch of up to 50; mixed formats are accepted.
Set the Aspect ratio, and Fill to centre-crop to it instead of fitting inside it.
Press Resize image and download the result in whichever of JPG, JPEG, PNG, WEBP suits you.

What you get with Resize by Aspect Ratio

Accepts JPG, JPEG, PNG and 9 more in one go
Output in JPG, JPEG, PNG, WEBP
Batch up to 50 files, returned together
Runs in your browser — the file is never uploaded
Free to use, with no signup and no account
No watermark or logo added to your output
Works on desktop and mobile, no install

Resize by Aspect Ratio: questions

Is it safe to use for a document with personal details in it?: That is the design goal: the document stays on your device, so a statement, a contract or an ID photo is never transmitted for processing. Nothing here needs an internet connection once the page has loaded, apart from engines that fetch their own model data.
Will it work on a phone?: Yes. The layout adapts to a small screen and the processing runs in the mobile browser, so a photo or a downloaded document can be handled on the device it arrived on.
Will I notice a quality difference?: Re-encoding always costs something, so start at the lighter setting and only push further if the size is still wrong. The before-and-after figures on the page are the honest way to decide.
Do I need to pay or register?: No. Every tool on this site is free, with no account, no email and nothing to install.