How it works
Each size is drawn straight from your original image at full resolution, then saved in the format you pick. In Fill and crop mode the image is scaled until it covers the whole frame, and the part that's cut off is chosen by your focus point, so faces and logos stay in shot. Fit inside keeps the whole image and fills the gaps with a blurred copy, a color or transparency. Large reductions are scaled down in steps, which keeps fine text and edges sharper than a single resize.
The preview marks where each platform crops: profile pictures shown as circles, the YouTube banner area visible on every device (1235 × 338 in the middle), and the 3:4 tile Instagram shows on your profile grid. These guides are only on the preview, never in the downloaded file. Sizes with an upload limit, like YouTube thumbnails, are automatically saved under it.
Social media image sizes for 2026
| Platform | Image | Size (px) | Ratio |
|---|---|---|---|
| Portrait post | 1080 × 1350 | 4:5 | |
| Grid-fit portrait (3:4) | 1080 × 1440 | 3:4 | |
| Square post | 1080 × 1080 | 1:1 | |
| Landscape post | 1080 × 566 | 1.91:1 | |
| Story or Reel cover | 1080 × 1920 | 9:16 | |
| Profile photo | 320 × 320 | 1:1 | |
| TikTok | Video cover | 1080 × 1920 | 9:16 |
| TikTok | Profile photo | 200 × 200 | 1:1 |
| YouTube | Thumbnail | 1280 × 720 | 16:9 |
| YouTube | Thumbnail, 4K | 3840 × 2160 | 16:9 |
| YouTube | Channel banner | 2560 × 1440 | 16:9 |
| YouTube | Profile picture | 800 × 800 | 1:1 |
| YouTube | Shorts thumbnail | 1080 × 1920 | 9:16 |
| X (Twitter) | Post image | 1600 × 900 | 16:9 |
| X (Twitter) | Header | 1500 × 500 | 3:1 |
| X (Twitter) | Profile photo | 400 × 400 | 1:1 |
| Portrait post | 1080 × 1350 | 4:5 | |
| Link image | 1200 × 630 | 40:21 | |
| Page cover | 820 × 312 | 2.63:1 | |
| Story | 1080 × 1920 | 9:16 | |
| Portrait post | 1080 × 1350 | 4:5 | |
| Landscape post | 1200 × 627 | 1.91:1 | |
| Profile banner | 1584 × 396 | 4:1 | |
| Profile photo | 400 × 400 | 1:1 | |
| Standard Pin | 1000 × 1500 | 2:3 | |
| Twitch | Profile banner | 1200 × 480 | 5:2 |
| Twitch | Offline screen (video player banner) | 1920 × 1080 | 16:9 |
| Twitch | About panel | 320 × 160 | 2:1 |
| Twitch | Profile picture | 256 × 256 | 1:1 |
| Kick | Offline banner | 1920 × 1080 | 16:9 |
| Kick | Profile banner | 1920 × 1080 | 16:9 |
| Rumble | Thumbnail | 1280 × 720 | 16:9 |
| Rumble | Channel banner | 3600 × 600 | 6:1 |
Instagram's profile grid shows posts as 3:4 tiles, so a 4:5 portrait loses a little at the top and bottom on your profile; 1080 × 1440 fills the tile exactly. YouTube now recommends thumbnails up to 3840 × 2160, with a 2 MB limit when you upload from a phone and 50 MB from a computer. Kick doesn't publish image sizes, so 1920 × 1080 is the common choice for both its banners. Rumble asks for 1280 × 720 thumbnails and a 3600 × 600 channel banner (6:1, under 2 MB) that phones crop at the sides. Details for each size, plus video and upload limits, are on the social media sizes cheat sheet.
Tips for sharp results
Start from the largest version of your image you have; resizing down is lossless in practice, but scaling a small image up always looks soft. Use PNG for designs with text, logos or flat colors and JPG for photos. Platforms re-compress uploads, so an image that's already the exact size usually comes out sharper than one the platform has to resize itself.
Frequently asked questions
Is my image uploaded anywhere?
No. Decoding, cropping and saving all happen in your browser, so the image never leaves your device. You can even use the page offline once it has loaded.
What size should an Instagram post be in 2026?
1080 × 1350 (4:5) is the standard portrait size. 1080 × 1440 (3:4) matches the profile grid tile exactly, and 1080 × 1080 still works for squares.
Why is my YouTube thumbnail rejected?
Usually because it's over the size limit: 2 MB when uploading from a phone. This tool saves YouTube thumbnails under 2 MB automatically. It must also be 16:9 and at least 640 px wide.
Can I resize iPhone HEIC photos?
Yes. HEIC photos are decoded right in the browser, and you can save them as JPG, PNG or WebP at any size.
Was this calculator helpful?
Sources
- Instagram Help Center: Sharing photos and videos
- YouTube Help: Manage your channel banner and profile picture
- YouTube Help: Add video thumbnails
- Twitch Help: Channel branding
- X Help: How to customize your profile
- Rumble Support: Change a thumbnail (1280 × 720)
- Rumble Support: Channel backsplash dimensions