Tool

Thumbnail Image Resizer

Pick a preset, upload an image, and download a PNG sized for YouTube and social covers.

Source

Cover crop keeps the center of your image and fills the frame.

Image file

Output size

Preview

Export matches this preview pixel-for-pixel.

Generate new thumbnail

How it works

Export perfect YouTube sizes in four steps

Choose a preset, upload your art, preview the centered cover crop, then download a crisp PNG.

Generate thumbnails with Miniagen. Try it free.

Create thumbnails Start free

Select the target preset

1280 × 720 for standard YouTube thumbnails, or jump to 1920 × 1080 / 854 × 480 when you need other deliverables.

Upload your source image

Any common photo or design export works. The tool keeps the center of your composition when it trims to the new ratio.

Review the canvas preview

What you see in the preview is exactly what gets encoded into the downloaded PNG.

Download your PNG

One click saves a web-ready file you can upload to YouTube or hand off to your team.

Features

Resize without opening heavy design apps

Purpose-built presets, centered cover math, and a clean export path for busy publishing calendars.

Preset library

Jump straight to the sizes creators use most often on YouTube and social.

Center-weighted crop

Automatic cover behavior keeps faces and logos near the focal center.

True-size preview

Canvas dimensions mirror the preset so there are no surprises after export.

PNG export

Lossless-friendly workflow for sharp text and gradients on thumbnails.

Fast iteration

Swap presets instantly to compare how the same art feels at different resolutions.

Great companion to Miniagen

Generate variations in Miniagen, then normalize dimensions here before upload.

FAQ

Resizer questions

Which preset should I pick for YouTube?

1280 × 720 is the classic thumbnail size. Use 1920 × 1080 when you need a larger master for other platforms too.

Will cropping cut off my subject?

The tool uses a center-weighted cover crop. Keep important faces or logos near the middle for best results.

Is the download ready for upload?

The PNG matches the preview pixel for pixel. You can upload it straight to YouTube when you are happy with the crop.

Can I batch several files here?

This page handles one image at a time. Run quick passes per asset or pair it with Miniagen for high-volume workflows.

Stop losing clicks to
weak thumbnails

Generate studio-quality thumbnails that grab attention and drive clicks in seconds. No design skills needed.