What size is a YouTube thumbnail?

1280×720 pixels (16:9) is the recommended size. The tool also includes the 2560×1440 channel banner; keep important content near the centre, since banners are cropped differently on phones and TVs.

Part of my picture gets cut off — what can I do?

Drag on the preview to move the framing. If the aspect ratios are very different, switch to Fit whole image + background so nothing is cropped and the empty space is filled with a blurred version of the image.

Are my files uploaded to a server?

No. Everything runs locally in your browser via WebAssembly. Files never leave your computer and are discarded when you close the page.

Do I need to sign up or pay?

No. The site is completely free, requires no account, has no usage limits and adds no watermarks.

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📱Social Media Image Resizer - YouTube Thumbnail, Instagram, X Header & More

Every platform wants a different size and aspect ratio. Upload one image and tick the ones you need: YouTube thumbnail and channel banner, Instagram square, portrait and story, X (Twitter) post and header, Facebook cover and link image, LinkedIn banner, Pinterest pin, TikTok / Reels 9:16, Open Graph images, plus Chinese platforms such as WeChat covers, Xiaohongshu, Douyin, Weibo and Bilibili. Crop-to-fill mode lets you drag the preview to frame the shot, and the focal point is shared across every size; fit mode keeps the whole image and fills the rest with a blurred copy or a solid color. Export every selected size at once as a zip.

Free · No sign-up · Runs in your browserLast updated: 2026-10-26

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How to use Social Media Image Resizer

1Upload an image
2Tick the platform sizes you need, click a name to preview it and drag to reframe
3Choose JPG or PNG and export a single file or a zip of all sizes

FAQ

What size is a YouTube thumbnail?: 1280×720 pixels (16:9) is the recommended size. The tool also includes the 2560×1440 channel banner; keep important content near the centre, since banners are cropped differently on phones and TVs.
Part of my picture gets cut off — what can I do?: Drag on the preview to move the framing. If the aspect ratios are very different, switch to Fit whole image + background so nothing is cropped and the empty space is filled with a blurred version of the image.
Are my files uploaded to a server?: No. Everything runs locally in your browser via WebAssembly. Files never leave your computer and are discarded when you close the page.
Do I need to sign up or pay?: No. The site is completely free, requires no account, has no usage limits and adds no watermarks.