How do you preview a YouTube thumbnail before uploading?

Upload your thumbnail image to this free preview tool. It immediately shows how the thumbnail will appear in YouTube Search results (168×94 px), the Suggested sidebar (120×68 px), and the Home feed (around 320×180 px) — so you can spot readability or design issues before publishing.

At what size does YouTube display thumbnails in search?

YouTube displays thumbnails at approximately 168×94 pixels in Search results and the Suggested sidebar on desktop. On the Home feed, thumbnails appear at around 320×180 pixels. Mobile sizes vary by device but Search thumbnails are typically around 160×90 pixels.

Free · 3 view contexts · editable title

YouTube Thumbnail Preview Tool

A free YouTube thumbnail preview tool that shows your image exactly as it appears in Search results, the Suggested sidebar, and the Home feed — at real display sizes. Upload any JPG, PNG, or WebP, enter your video title, and see whether your thumbnail is readable and compelling before you publish.

Last updated: May 27, 2026

Free preview tool

How does your thumbnail look on YouTube?

Display sizes

At what size does YouTube show your thumbnail?

YouTube renders the same 1280×720 source thumbnail at very different sizes depending on the surface. Design for the smallest — Search at 168×94 px — and everything else will look fine.

Context	Displayed size	Notes
Search results (desktop)	168 × 94	Tightest constraint — most critical for readability
Suggested / sidebar (desktop)	120 × 68	Competes with 8–12 other thumbnails in a narrow column
Home feed (desktop)	~320 × 180	Largest display — best chance to make an impression
Mobile app	~360 × 202	Full-width cards on most phones
YouTube TV	480 × 270	10-foot UI — safe zone especially important

The 168px test

How do you design a thumbnail that works at small sizes?

The tightest constraint is the Search thumbnail at 168 pixels wide. Pass the 168px test and your thumbnail will work on every surface.

✓

Use 2–5 words of bold textAt 168 px wide, a single sentence becomes illegible. Keep text to 2–5 high-impact words in a heavy font weight (700–900). The title in the search result covers the story; your thumbnail provides the visual hook.

✓

Fill the frame with a clear subjectAt 168 px a distant or busy scene reads as visual noise. Put the main subject (face, object, graphic) close to the camera and near the centre-left of the frame.

✓

High contrast between text and backgroundAim for a WCAG 4.5:1 contrast ratio between your text colour and the background colour immediately behind it. A semi-transparent dark band behind light text is a reliable fallback.

✓

Use a single dominant colour or visual hookAt small sizes the viewer registers a colour impression before they read text. Pick one dominant colour (often the background) and one contrasting accent to create instant visual identity.

FAQ

YouTube thumbnail preview — questions answered

How do I preview a YouTube thumbnail before uploading?+

Use this free tool: upload your thumbnail image, enter your video title, and the tool shows you exactly how it will appear in YouTube Search (168×94 px), the Suggested sidebar, and the Home feed. No account required.

Why does my thumbnail look blurry in the preview?+

Your source image is probably below 1280×720 pixels. YouTube upscales small images, which introduces blur. Always design at 1280×720 and export at 100% size — do not scale up a small image.

Does the video title affect how my thumbnail performs?+

Yes. YouTube shows your thumbnail and title together in Search and Suggested results. The title handles the 'what' (topic, promise) while the thumbnail handles the 'why click' (visual hook, emotion, curiosity). Mismatched title and thumbnail lower CTR even when the thumbnail is technically good.

What is the YouTube Search thumbnail size?+

YouTube displays search result thumbnails at approximately 168×94 pixels on desktop. This is the tightest constraint — design all text and visual elements to remain readable at this size.

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