Social media image resizer

01

The sizes that matter in 2026

Instagram accepts feed photos between 1.91:1 landscape and 4:5 portrait and scales them to at most 1,440 pixels wide; 1080 × 1350 (4:5) takes the most room in the feed. Stories and Reels covers are 9:16, 1080 × 1920. YouTube asks for a 16:9 thumbnail at least 640 pixels wide, so 1920 × 1080 is a safe choice.

The profile grid on Instagram has shown 3:4 tiles since early 2025. A 4:5 post is shown in full in the feed but loses a thin strip on each side in the grid, a 3:4 post (1080 × 1440) fits the grid exactly but has to be uploaded from the app, because Meta's publishing API only accepts 4:5 to 1.91:1.

02

Crop or fit?

Fill and crop gives a clean, full-frame image and is right for most photos: move the focus point until the face or product is where you want it, and zoom in if the subject is small. Fit whole image keeps everything, useful for screenshots, infographics and quotes, and fills the gap with a color you choose.

The YouTube banner shows a dashed safe area: on phones only the middle strip is visible, so keep your name and text inside it. The profile picture shows the circle most apps crop to.

03

Quality tips

Start from the largest version of the photo you have. If the original is smaller than the target size, the tool warns you, enlarging always softens the image. Save photos as JPEG and graphics with text as PNG, and check the result on a phone before you post.