Drop in your thumbnail and this tool overlays the exact areas YouTube’s interface covers — the automatic duration stamp in the bottom-right corner, the embedded player’s title bar across the top, the bottom strip where gradients and progress UI appear, and the outer edge band that mobile cards and rounded corners can clip. You see at a glance whether your text, face, or logo is about to disappear before a viewer ever clicks. Everything happens in your browser: your image is never uploaded, stored, or sent anywhere.
The canvas matches a real YouTube thumbnail — 1280 × 720 px, 16:9 — read straight from the same verified dataset behind our YouTube Thumbnail size guide, so the frame here and the spec sheet it links to can never drift apart. The overlays are positioned from documented YouTube UI measurements, but they remain a guide rather than a pixel-exact spec — YouTube’s player skin and card layouts vary across surfaces and app versions.
Drag and drop a frame from your clip here, or
JPEG, PNG, or WebP, up to 20 MB. Processed in your browser — never uploaded.
Your frame will appear here with the safe-zone overlays.
What the interface covers
These are the share of the total frame each interface zone occupies — pure geometry. The tool can’t see your image, so it makes no claim about whether your subject is covered; judge that against the overlay above.
Where the duration stamp and title bar sit, and how feed cards crop the edges, varies by surface, device, and app version — treat the overlays as a guide, not a pixel-exact spec. As of June 2026.
Your image is processed entirely in your browser with the Canvas API — it never leaves your device, and nothing is uploaded or stored.
Guide
A YouTube thumbnail looks like a clean rectangle, but several interface elements sit on top of it before a viewer even decides to click. The most familiar is the duration stamp: YouTube auto-injects the video runtime (for example, 10:05) as a pill into the bottom-right corner of the thumbnail on every grid, search, and watch-next card. It’s not optional — the creator cannot remove it — so anything you place in that corner competes with it.
The bottom edge also carries a gradient and progress-bar UI in hover states and embedded players, making the lowest strip of the frame unreliable for critical content. At the top, embedded players and many third-party surfaces render the video title in a dark bar before playback begins — placing key text or faces there risks them being hidden on embed-heavy distribution. Finally, the outer ~6% on all four sides can be clipped by rounded mobile card corners, TV overscan, and responsive grid layouts. Overlay your thumbnail here and those collisions become obvious before you upload, not after.
The reliable real estate on a YouTube thumbnail is the central region, roughly the inner 1100 × 620 px of the 1280 × 720 canvas. Keep faces, key text, logos, and your primary subject within that band, clear of the duration-stamp corner, the bottom gradient strip, the top embedded-title bar, and the outer edge margins.
If your thumbnail uses a text hook, place it in the upper-centre or left-centre of the frame — away from the bottom-right where the duration stamp lives and away from the top strip where an embedded title can overlay. Avoid anchoring anything important to a corner: corners are the first thing to disappear on rounded mobile cards and TV overscan. Background colour or texture can run edge to edge quite happily — it’s the meaningful elements that need to stay in the clear zone.
Each percentage here is the area of one zone over the full 16:9 thumbnail — geometry alone. A thumbnail is unusual among these checkers because the hazard is twofold: YouTube stamps the duration badge and an embedded-player title bar on top of your image, and at the same time mobile feed cards and rounded corners crop the outer edge before anyone even clicks. The tool maps both, but it cannot know whether your headline text or your subject’s face happens to sit under the duration badge — only that the badge occupies that corner.
That is why we report the interface map instead of a "subject blocked" verdict: a browser can measure where the badge and title bar land, but not what is important in your art. Toggle the duration stamp, title bar, and edge-crop zones in the legend as you adjust the layout, read the per-zone notes, and remember the measurements are transcribed from documented YouTube surfaces that vary across devices and embed contexts — leave a comfortable margin at the corners and edges.
No. The checker runs entirely in your browser using the Canvas API — your image goes from your device into the page’s memory, gets drawn with the overlays there, and any annotated preview you download goes straight back to your device. Nothing is uploaded, stored, or logged on any server, and the tool works the same offline as on Wi-Fi.
They’re the areas of a thumbnail where YouTube’s own interface sits on top of your image: the automatic duration stamp in the bottom-right corner, the semi-transparent gradient and progress UI along the bottom edge, the embedded player’s title bar across the top, and the outer ~6% edge band that mobile cards and rounded corners can clip. Keep faces, text, and logos in the central region of the frame and away from those areas.
No. It plots the duration stamp, title bar, and edge-crop band and reports the share of the thumbnail each takes — that is all it measures. Whether your headline text or face actually lands under the duration badge or gets clipped at a rounded corner is a call you make by eye with the overlay on; we don’t fabricate a "subject blocked" statistic a browser tool can’t actually measure.
They’re transcribed from documented YouTube thumbnail UI measurements, so they’re accurate enough to plan around — but they’re a guide, not a pixel-perfect spec. YouTube shifts its player skin, card layout, and duration-stamp sizing between app versions, devices, and embed contexts, so leave a comfortable margin rather than placing content right at a zone edge.
Overlay Instagram’s Reels UI — the top bar, right action rail, caption block, and nav — on your own clip to see what gets covered. Runs in your browser.
Instagram Stories safe zone checkerOverlay Instagram’s Story UI — the progress bars, profile row, reply bar, and side tap-advance margins — on your own frame to see what gets covered. Runs in your browser.
TikTok safe zone checkerOverlay TikTok’s For You feed UI — the top tabs, right action rail, caption block, and nav bar — on your own clip to see what gets covered. Runs in your browser.
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Free to use — paste this snippet into any page. It stays up to date automatically and links back to SocialKit.
<iframe src="https://socialk.it/embed/youtube-thumbnail-safe-zone-checker" width="100%" height="920" style="border:1px solid #e5e7eb;border-radius:12px;max-width:680px" loading="lazy" title="YouTube Thumbnail safe zone checker by SocialKit"></iframe>SocialKit publishes scheduled Reels natively to Instagram — check your framing here, then let the calendar publish it at the right time across all 11 platforms.
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