A thumbnail-shaped copy
Start from your chosen image and export a separate copy shaped for a typical YouTube thumbnail workflow.
YouTube thumbnails
YouTube thumbnail optimizer
Choose the YouTube thumbnail workflow to make a copy with practical dimensions and a file size you can inspect before upload. Your image stays in this browser while it is processed.
No accountLocal processingBatch-friendly
Images are processed on this deviceUp to 100 files per batch
Starting the converter…
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How it works
Select an image and choose the YouTube thumbnail target. Adjust how the image fits its frame, export the result, and download it. The output is a file on your device; you upload it through YouTube Studio yourself.
Design for a small preview
Use a clear subject and large, high-contrast text when text is essential. Check that important details are not pushed to an edge by the crop. A larger source image usually gives the converter more room to make a crisp smaller copy.
Limitations
MorphoThat cannot predict how YouTube will display, crop, recompress, review, or accept a thumbnail. Requirements may change, and the result may look different across devices. It also cannot improve a blurry source image or guarantee that text stays readable at every display size.
Frequently asked questions
Does this upload a thumbnail to YouTube?
No. The tool creates a downloadable image locally. You upload it yourself using YouTube's current upload flow.
Does the YouTube target guarantee acceptance?
No. It provides a practical starting point only. Confirm YouTube's current thumbnail requirements and review the result after upload.
Does MorphoThat receive my source image?
No. The image is processed locally in your browser and is not uploaded to MorphoThat for conversion.
Review before upload
Check the final framing, text legibility, format, and file size at the size viewers are likely to see.
No account connection
MorphoThat does not sign in to YouTube, access your channel, or upload a thumbnail on your behalf.