# YouTube Thumbnail Size (2026): 3840 × 2160 and Shorts Canonical page: https://fuser.studio/articles/youtube-thumbnail-size YouTube now recommends 3840 × 2160 px thumbnails (16:9), minimum 640 px wide, up to 50 MB on desktop and 2 MB on mobile. Get Shorts thumbnail sizes and a workflow for readable thumbnails. [All guides](/articles) · [Every social image size](/articles/social-media-image-sizes) **Quick answer:** YouTube recommends thumbnails at **3840 × 2160 pixels (16:9)** with a **minimum width of 640 px**, in JPG or PNG. Files can be up to **50 MB when uploaded on desktop** but only **2 MB from mobile** ([YouTube Help](https://support.google.com/youtube/answer/72431)). Shorts thumbnails are the vertical version: **2160 × 3840 (9:16)**. The old standard of 1280 × 720 and 2 MB is out of date. A 1280 × 720 file still uploads, but YouTube now asks for 4K, which keeps thumbnails sharp on TVs and large monitors. ## YouTube thumbnail size and limits - **Recommended size:** 3840 × 2160 px. - **Aspect ratio:** 16:9. Other ratios are letterboxed or cropped. - **Minimum width:** 640 px. - **Formats:** JPG or PNG. - **File size:** up to 50 MB on desktop, 2 MB on mobile. If you upload from your phone, export a compressed JPG. - **Shorts thumbnail:** 2160 × 3840 px (9:16), minimum height 640 px. - **Podcast thumbnail:** square (1:1). ![A 16:9 video thumbnail and a 9:16 Shorts thumbnail made from the same ramen photo, labelled with their pixel sizes.](https://statics.fuser.studio/cms/7e3c2596-7b80-4ddb-b71d-fc146bea74f7) _Plan for both shapes: 16:9 for videos and 9:16 for Shorts._ ## Design for the smallest place it appears The same file appears as a large TV tile and as a small card in mobile search results. What holds up at the small size: - **One subject, big.** A face, a product or a dish filling a third of the frame reads at any size. Several small objects don't. - **Three words or fewer.** The title is already beneath the thumbnail; the image only needs a hook. - **Hard contrast.** Light type on a dark area, or the reverse. Glows and thin outlines disappear when the image is scaled down. - **Keep the bottom-right corner simple.** YouTube places the video length there, so don't put key text in that corner. - **Check it small.** Scale your export down to phone size before you upload. If the words don't read, cut words. ![Fuser Compositor with the canvas set to 3840 by 2160 pixels for a YouTube thumbnail with a large two-line title over a ramen photo.](https://statics.fuser.studio/cms/fb4a6b38-da13-4d1b-bb00-fdcebe63777a) _A 3840 × 2160 Compositor canvas: two-word title, one subject, high contrast._ ## How to make a 4K thumbnail with AI Image models don't always return the exact pixels you ask for. We requested 1920 × 1080 from one model and got 1920 × 1072 back. The dependable way to hit 3840 × 2160 is to compose the final frame at that size. 1. **Generate the scene with room for type.** On a Fuser canvas, prompt [GPT Image](/models/gpt-image) with the subject on one side and a dark, clean area on the other. Fuser's GPT Image 2 and 2.5 nodes include a 3840 × 2160 output option, and other models can be upscaled in the same graph. 2. **Open a Compositor at 3840 × 2160.** In the [Compositor](/features/compositor), set the canvas to 3840 × 2160 ([Compositor docs](https://docs.fuser.studio/docs/compositor/properties)). Scale the image to fill it and add the title as a text layer, so you can test alternative hooks without regenerating. 3. **Branch a Shorts version.** Connect the same image to a second Compositor at 2160 × 3840. If the vertical crop loses the subject, pass that frame to GPT Image with size set to Auto so the new image follows the vertical frame. 4. **Export PNG, then compress for mobile.** Export renders at the canvas size and saves to your project's media library ([export docs](https://docs.fuser.studio/docs/compositor/timeline-and-export)). A 4K PNG can exceed 2 MB, so convert it to JPG if you upload from your phone. Keep the title as a separate layer and you can try several hooks on the same image. For the channel header, see [YouTube banner size](/articles/youtube-banner-size). ## YouTube thumbnail specs at a glance. From YouTube Help, checked on 28 September 2026. ### Size and format | Spec | Video thumbnail | Shorts thumbnail | | --- | --- | --- | | Recommended size | 3840 × 2160 px | 2160 × 3840 px | | Aspect ratio | 16:9 | 9:16 | | Minimum | 640 px wide | 640 px tall | | Formats | JPG or PNG | JPG or PNG | | Max file size | 50 MB desktop, 2 MB mobile | 50 MB desktop | ## Questions, answered. ### What is the YouTube thumbnail size in 2026? YouTube recommends 3840 × 2160 pixels (16:9) with a minimum width of 640 pixels, uploaded as JPG or PNG. ### Is 1280 × 720 still OK for YouTube thumbnails? It still uploads because it is above the 640-pixel minimum, but YouTube now recommends 3840 × 2160. The larger size stays sharp on TVs and large screens. ### What is the maximum YouTube thumbnail file size? Up to 50 MB when uploaded on desktop and 2 MB when uploaded from mobile. Compress to JPG if you upload from your phone. ### What size is a YouTube Shorts thumbnail? 2160 × 3840 pixels, a 9:16 vertical image, uploaded as JPG or PNG. ### How do I make a YouTube thumbnail with AI? Generate a scene with space for type, then compose the final frame at 3840 × 2160 with the title as an editable text layer. In Fuser, a Compositor set to 3840 × 2160 exports the PNG at exactly that size. ## Build thumbnails you can iterate on. Generate the scene, set the Compositor to 3840 × 2160 and test new titles without regenerating the image. [See social content workflows](https://fuser.studio/solutions/use-cases/social-content) · [All social image sizes](https://fuser.studio/articles/social-media-image-sizes) ## More articles - [YouTube Banner Size 2026: Dimensions and Safe Area](https://fuser.studio/articles/youtube-banner-size.md) - [Facebook Cover Photo Size 2026: Desktop and Mobile](https://fuser.studio/articles/facebook-cover-photo-size.md) - [Instagram Post Sizes (2026): Feed, Story, Reel and Carousel](https://fuser.studio/articles/instagram-post-sizes.md)