Can I process several files at once?

Yes, up to 50 files in a batch, each no larger than 100 MB. Results come back together instead of one save dialog per file.

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.

YouTube Thumbnail Resizer

1280×720 thumbnail, channel art and Shorts sizes.

Drag & drop your images here

Batch: up to 50 images at once

Add at least one image.

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About YouTube Thumbnail Resizer

The job of YouTube Thumbnail Resizer is narrow on purpose: 1280×720 thumbnail, channel art and Shorts sizes. It takes JPG, JPEG, PNG and 9 more and produces JPG, PNG. Nothing is sent anywhere: the browser reads the file, does the work and hands the result back.

The slow route to changing image dimensions to a target size is installing something, making an account and uploading the file; this is the fast route.

How to use YouTube Thumbnail Resizer in 3 steps

Add one image or a batch of up to 50; mixed formats are accepted.
Set the Target size preset you need — the list holds the standard dimensions for this job.
Press Resize image and download the result in whichever of JPG, PNG suits you.

What you get with YouTube Thumbnail Resizer

Accepts JPG, JPEG, PNG and 9 more in one go
Output in JPG, PNG
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

YouTube Thumbnail Resizer: questions

Can I process several files at once?: Yes, up to 50 files in a batch, each no larger than 100 MB. Results come back together instead of one save dialog per file.
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.