Social media image resizer
Choose an image, pick a platform size and drag to frame it. Download a perfectly sized JPEG for Instagram, Facebook, LinkedIn, Pinterest, YouTube or X — in seconds, right in your browser.
Edited in your browser — never uploaded
Choose an image to get started
JPEG, PNG, WebP or GIF — then pick a size and drag to frame it.
Frequently asked questions
What size should an Instagram post be?
Use 1080 × 1080 for square posts and 1080 × 1350 (4:5) for portrait posts, which take up more of the feed. Stories and Reels covers are 1080 × 1920 (9:16).
What is the right size for a YouTube thumbnail?
1280 × 720 pixels (16:9). Keep the file under 2 MB — the JPEG quality slider helps you hit that while keeping the image sharp.
Are my images uploaded?
No. Cropping and resizing happen on a canvas inside your browser, and the finished JPEG is saved straight to your device. Your photo never touches a server.
What's the difference between “Crop to fill” and “Fit with border”?
Crop to fill covers the whole frame and trims the edges — drag to choose what stays in. Fit with border keeps the entire image visible and fills the leftover space with a colour you pick.
Why does my resized image look blurry?
If the original is smaller than the target size, it has to be enlarged. The tool warns you when that happens — start from a bigger original or zoom out for the sharpest result.
Schedule it with Join Postly
Drop your resized images into one post and schedule them to every network at the perfect time.