Resize Image for YouTube
Perfect 1280×720 thumbnails and channel art — free, instant, no upload
Drop image here or click to upload
JPG, PNG, WebP, HEIC — max 20MB
You can also paste an image (Ctrl+V)
Official YouTube Image Size Requirements
YouTube displays your thumbnail across many surface areas — search results, suggested videos, the watch page, and mobile feeds — each at a different size. Uploading at the correct dimensions ensures your thumbnail looks sharp everywhere and is not recompressed by YouTube's resizing pipeline.
| Image type | Dimensions | Max file size | Format |
|---|---|---|---|
| Video Thumbnail | 1280×720px | 2MB | JPG, PNG, WebP |
| Channel Art (Banner) | 2560×1440px | 6MB | JPG, PNG |
| Channel Profile Picture | 800×800px | 4MB | JPG, PNG |
| End Screen (element) | 1280×720px | 2MB | JPG, PNG |
| Community Post Image | 1080×1080px recommended | — | JPG, PNG |
Thumbnails must be at least 640×360px (360p). YouTube recommends 1280×720px (720p) as the standard — it displays correctly at all sizes from mobile to 4K screens.
How to Resize an Image for YouTube — 3 Steps
- 1
Select the YouTube image type
Choose your format at the top — Thumbnail (1280×720), Channel Art (2560×1440), Profile (800×800), or Community Post (1080×1080). The most important is Thumbnail: YouTube recommends 1280×720px at under 2MB.
- 2
Upload your image
Click the upload area or drag and drop your JPG, PNG, WebP, or HEIC file. iPhone HEIC photos are automatically converted to JPEG. Processing starts immediately.
- 3
Download and upload to YouTube Studio
Download the resized image. In YouTube Studio, open your video → Details → Thumbnail → Upload thumbnail. The file will meet YouTube's dimension and size requirements.
Why YouTube Thumbnail Size Affects Your CTR
A YouTube thumbnail is the single most important factor in whether a viewer clicks your video. YouTube displays thumbnails at dozens of different sizes — from 120×67px in search autocomplete to 480×270px in the watch page sidebar — and a thumbnail optimized for the correct base resolution stays sharp at all of them.
Uploading a thumbnail that is smaller than 1280×720px forces YouTube to upscale it, producing blurring and pixelation that signal low production quality to viewers. Uploading one that is larger than 1280×720px forces YouTube to downscale it through its own compression pipeline, adding JPEG artifacts.
< 640×360px
Rejected
YouTube will not allow thumbnails below the minimum resolution.
640–1279×360–719px
Blurry
YouTube upscales to 1280×720 — introduces blur and pixelation.
1280×720px
Optimal
Displays crisp at all sizes. No resampling by YouTube.
YouTube Channel Art — Safe Zone Guide
Channel Art (the banner at the top of your channel page) displays at different dimensions depending on the device. YouTube crops the center of the 2560×1440px image for each device. To prevent important content from being cut off:
| Device | Display size | Safe zone |
|---|---|---|
| Mobile | 1546×423px | 1546×423px center |
| Tablet | 1855×423px | 1546×423px center |
| Desktop | 2560×423px | 1546×423px center |
| TV | 2560×1440px | Full image visible |
Keep all text and logos within the 1546×423px center zone to ensure they appear on all devices. Use the full 2560×1440px canvas only for decorative background elements.
Does YouTube Compress Thumbnails?
Yes. YouTube re-encodes all thumbnails to JPEG, regardless of whether you upload a PNG or WebP. The platform targets a specific file size for fast delivery across all connection speeds. There are two practical implications:
- →PNG transparency is lost. YouTube converts PNG alpha channels to a white or dark background. Do not rely on transparency in thumbnails.
- →Text may show JPEG artifacts. Sharp text and high-contrast edges are the first to show compression artifacts. Use bold, large text (minimum 60px at 1280×720) and high-contrast colors (white on dark, or dark on light) to remain legible after compression.
Tips for High-CTR YouTube Thumbnails
- →Use a face with a strong expression. Thumbnails with a close-up face showing surprise, excitement, or curiosity consistently outperform text-only thumbnails across most niches.
- →Limit text to 3–5 words. The thumbnail displays at small sizes in search. Text-heavy thumbnails become unreadable. Use large, bold Impact or Arial Black at 60px+ at the 1280px canvas size.
- →Create visual contrast with the title. Your thumbnail and video title should communicate different parts of the story — the thumbnail creates curiosity, the title provides context.
- →Keep file size under 2MB. YouTube rejects thumbnails over 2MB. A 1280×720 JPEG at quality 85 is typically 150–400KB — well under the limit. If yours is over 2MB, compress it first.
Privacy — Your Files Never Leave Your Device
All resizing happens 100% in your browser using the HTML5 Canvas API. Your thumbnail images are never uploaded to a server, never stored, and never analyzed by any third-party service.