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Vizua

YouTube Thumbnail and Channel Image Resizer

Your files never leave your device

Drop images here

or click to browse

Supports: JPG, PNG, WebP

Frequently Asked Questions

What size should a YouTube thumbnail be?

YouTube recommends 3840x2160px at 16:9, with a minimum width of 640px. For video thumbnails, the limit is 2MB on mobile and 50MB on desktop; podcast thumbnails use 10MB on mobile and 50MB on desktop.

What size should a YouTube channel banner be?

YouTube recommends 2560x1440px, especially for TV, with a 2048x1152px minimum. At that minimum size, the text-and-logo safe area is 1235x338px, and the banner can still be cropped on some devices.

What does Vizua guarantee about the output?

Vizua center-crops the source to the selected canvas and exports a new JPEG at a fixed quality. It does not preserve the whole source, enforce a safe area, or guarantee that the file fits YouTube upload limits. The 800x800 avatar workspace is a convenience preset, not a general YouTube upload recommendation.

What you can do with YouTube Thumbnail and Channel Image Resizer

Create YouTube thumbnail, channel-banner, and icon presets from a supported source. Review each crop and current platform guidance before publishing.

YouTube Thumbnail and Channel Image Resizer is designed for quick, repeatable work in a modern browser. The controls on this page let you prepare the result without installing software or creating an account.

How to use YouTube Thumbnail and Channel Image Resizer

  1. Select or drop the file you want to process, or enter the information requested by the tool.
  2. Review the available settings before processing, especially format, dimensions, quality, color, or other details that affect the output.
  3. Inspect the result, download the new file, and keep the original unchanged in case you need another version.

Private by design

Your files never leave your device. All processing happens locally in your browser.

Tips for better results

  • Start with the cleanest source available; a small, blurry, or heavily compressed file contains less detail to preserve.
  • Check dimensions and format before downloading so the result matches the site, app, printer, or platform where you will use it.
  • For large files, close unnecessary tabs and test one representative file before processing a full batch.
  • Open the downloaded result once before sharing it or replacing an original.

Where YouTube Thumbnail and Channel Image Resizer fits in a workflow

Use YouTube Thumbnail and Channel Image Resizer for one-off adjustments or as a preparation step before publishing, sharing, archiving, or continuing the edit in another application. When batch processing is available, validate the settings on a small sample first and then apply them to the remaining files.