What size is a Twitch stream thumbnail?

Twitch live stream previews and VOD thumbnails are recommended at 1280x720 pixels in a 16:9 ratio. Custom thumbnails must be JPG or PNG and stay under 10 MB.

What is the Twitch clip thumbnail size?

Clip thumbnails follow the 16:9 player frame at 1280x720 pixels. Twitch auto-generates one from the clip, but a custom 1280x720 image keeps your branding consistent.

Can I upload a custom thumbnail on Twitch?

Yes — partners and affiliates can set a custom live thumbnail and VOD thumbnails in Creator settings. Without one, Twitch shows a live frame grab, which is often blurry or off-message.

Why does my Twitch thumbnail look blurry?

Blurry previews usually come from uploading below 1280x720 or letting Twitch grab a low-quality live frame. Always upload a sharp 1280x720 image to keep the browse grid crisp.

What aspect ratio do Twitch thumbnails use?

Almost every Twitch landscape thumbnail uses a 16:9 ratio to match the player. Vertical Story covers are the exception at 9:16, which this tool lists separately.

Twitch Thumbnail Size Tool

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This tool gives you the exact thumbnail dimensions for every Twitch surface — live preview, VOD, clip, Story cover and offline banner — along with accepted formats and file-size caps. Twitch displays most previews in a 16:9 browse grid, so a crisp, correctly sized image is what makes your stream stand out against blurry auto-grabbed frames.

How it works

Pick a content type and the tool reads its spec from a built-in table: the recommended pixel size, aspect ratio, accepted formats and maximum file size. Landscape surfaces (live preview, VOD, clip) share the 1280×720 16:9 frame, while the vertical Story cover uses 1080×1920 (9:16). The offline banner fills the full 1920×1080 player.

Each entry includes a short note on how Twitch uses the image, so you know whether it appears in the browse grid, the channel page, or the player when you are not live.

Tips

Always upload at least 1280×720 — anything smaller is upscaled and looks soft in the browse grid.
Add a clear focal point and large, readable text; thumbnails are shown small, so fine detail is lost.
Replace Twitch’s auto-grabbed live frame with a custom thumbnail to control exactly what new viewers see first.