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Thumbnail Size & Dimension Guide

Copy-ready YouTube dimensions for thumbnails, channel banners, profile pictures, and Shorts — with aspect ratios and export tips so your visuals stay crisp everywhere.

Sizes Export tips FAQ Related tools

YouTube dimension quick reference

Note: platforms occasionally change UI crops. These values are the widely used recommended sizes. Always preview on mobile and desktop before publishing.

Asset	Pixels (W × H)	Aspect	Notes
Video thumbnail	`1280 × 720`	`16:9`	Keep under ~2MB, use high contrast and minimal text.
Shorts thumbnail (recommended frame)	`1080 × 1920`	`9:16`	Export vertical; avoid text near edges due to UI overlays.
Channel banner (channel art)	`2560 × 1440`	`16:9`	Design within a safe area for mobile; avoid edge-only text.
Profile picture (avatar)	`800 × 800`	`1:1`	Center the face/logo; circle crop will cut corners.
Video end screen (canvas)	`1920 × 1080`	`16:9`	Keep end-screen elements away from edges and subtitles.

Export tips (fast + practical)

Use PNG for sharp text and graphics; use JPEG if the image is photo-heavy and you need smaller size.
Sharpen lightly after resizing (too much sharpening creates halos).
Test at small size: zoom out until the thumbnail is tiny; if the idea isn’t clear, simplify.
Keep text minimal: thumbnails work best when the visual story is obvious in 1–2 seconds.
Safe margins: avoid placing critical text near edges where crops and UI can cover it.

Next steps (recommended workflow)

Check thumbnail text → CTR title angles → Pre-upload checklist →

If a thumbnail looks blurry, your source image may be too small or over-compressed.

Tip: export at 2× and downscale to reduce artifacts.

Why dimensions matter for YouTube

YouTube surfaces your content across many surfaces: home feed, suggested, search, Shorts shelf, and channel pages. If your assets are the wrong size, you can end up with blur, unexpected cropping, or text hidden behind UI overlays. A clean export doesn’t guarantee CTR — but a messy export can reduce it before the viewer even has a chance to decide.

Use this guide as a baseline, then test the final thumbnail at small sizes and on different backgrounds. When in doubt: simplify the visual story, increase contrast, and reduce text.

How to choose between PNG and JPEG

PNG preserves sharp edges, which helps text and high-contrast graphics. JPEG compresses photos well, but can create artifacts around text. If your thumbnail is text-heavy, PNG is often the safer choice. If it is photo-heavy and you need to stay under size limits, a high-quality JPEG can work.

Improve clarity and CTR.

Thumbnail Text Readability CTR Title Tester Pre-Upload SEO Checklist

If your title is long, the thumbnail should do more of the visual work (and vice versa).

FAQ

Is this YouTube size guide free to use?

Yes. This guide is free and accessible without a login.

What is the best YouTube thumbnail size?

A widely used recommendation is 1280 × 720 pixels at a 16:9 aspect ratio. Export sharp and keep file size reasonable.

Why does my thumbnail look blurry after upload?

Common causes include using a low-resolution source image, heavy compression, or resizing multiple times. Export once at the final size and avoid re-saving a JPEG repeatedly.

Should I use PNG or JPEG?

PNG is often better for text and crisp graphics. JPEG can work for photo-heavy thumbnails with smaller size.

What size should a YouTube banner be?

A common recommendation is 2560 × 1440. Design inside a safe area because different devices crop the edges.

Do Shorts use a different aspect ratio?

Yes. Shorts are typically vertical 9:16. A common working frame is 1080 × 1920.

Does YouTube crop thumbnails differently on mobile?

UI and preview sizes vary by surface. Keep critical text away from edges and always test at small sizes to ensure the story remains clear.

What should I do after setting the right dimensions?

Validate readability (text length and contrast), then test packaging: thumbnail + title + first 15 seconds. Use the Text Readability Checker and your upload checklist before publishing.