Best Image Sizes for Social Media in 2026 (Every Platform)
Posting the wrong size means awkward crops and blurry uploads. Here are the ideal image dimensions for every major platform — and how to crop to them free.
Post a photo at the wrong dimensions and the platform crops it badly, adds ugly bars, or softens it. Getting the image size right means your content fills the frame, looks crisp, and stops the scroll. Here are the best image sizes for social media in 2026 — and how to crop any photo to the exact ratio for free.
Square post: 1:1 (1080 × 1080). The classic, safe choice.
Portrait post: 4:5 (1080 × 1350). Takes up the most vertical space in the feed — great for reach.
Stories & Reels: 9:16 (1080 × 1920). Full-screen vertical.
Profile picture: square, displayed as a circle — so keep faces centred.
For feed posts, 4:5 portrait is often the highest-impact choice because it's the largest allowed in-feed.
YouTube
Thumbnail: 16:9 (1280 × 720), the single most important image on YouTube. A crisp, well-cropped 16:9 thumbnail dramatically affects click-through.
Channel banner: very wide (2560 × 1440 with a safe centre area). Because it displays differently on TV, desktop and mobile, keep key elements in the centre "safe zone".
For thumbnails, always export at 16:9 so nothing important gets cropped by the player.
Facebook, X (Twitter), LinkedIn, TikTok
Facebook feed: landscape 1.91:1 or square 1:1 both work well; portrait 4:5 for maximum height.
X (Twitter) in-stream: 16:9 landscape displays cleanly without cropping.
LinkedIn: 1.91:1 for link previews; 1:1 or 4:5 for feed images.
TikTok: 9:16 full-screen vertical, same as Reels and Stories.
When in doubt: 9:16 for vertical video platforms, 16:9 for landscape, 1:1 or 4:5 for feeds.
How to crop to the exact ratio (free)
You don't need to memorise pixel counts — you need the right aspect ratio, and a tool that crops to it cleanly:
1. Open JPT AI's crop tool at sjpt.io.
2. Upload your photo.
3. Pick the ratio — 1:1, 4:5, 9:16, 16:9, or circle.
4. Download.
It center-crops so your subject stays in frame, with no watermark and no sign-up. There are one-click pages for each: crop to square, Instagram story (9:16), YouTube thumbnail (16:9), and more.
Frequently asked questions
What's the best image size for Instagram?1:1 (square) is safe; 4:5 (portrait, 1080×1350) takes up the most feed space. Stories and Reels are 9:16.
What size is a YouTube thumbnail?16:9 aspect ratio, 1280×720 pixels.
How do I crop a photo to the right ratio for free?Use JPT AI's crop tool, pick the ratio (1:1, 4:5, 9:16, 16:9 or circle), and download. No watermark.
Why does my photo look blurry after posting?Usually it was uploaded at the wrong ratio and the platform re-cropped/re-compressed it. Crop to the correct ratio first, then upload.
Key takeaways
Match the ratio to the platform — 1:1 or 4:5 for feeds, 9:16 for vertical video, 16:9 for YouTube — and your images fill the frame and stay sharp. You don't need to memorise pixels; just crop to the right ratio. Do it free at sjpt.io. Crop Image Free →
