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Pick a platform and get the recommended pixels for profile pictures, posts, stories, banners and thumbnails — each with its aspect ratio and a one-line format note, plus print sizes for the A-series at 300 DPI. Verified August 2026, and honest about the catch: platforms move these numbers without notice, so the ratio column is the one to trust.
Profile picture
Shown as a small circle — centre the mark. PNG for logos.
320 × 320
1:1
Post (square)
JPG for photos, PNG for graphics with text.
1,080 × 1,080
1:1
Post (portrait)
The tall post — takes the most room in the feed.
1,080 × 1,350
4:5
Post (landscape)
Accepted, but shorter in the feed than a portrait post.
1,080 × 566
1.91:1
Story / Reel
Keep text away from the top and bottom edges — the UI sits there.
1,080 × 1,920
9:16
Instagram re-encodes everything you upload; a sharp original at these sizes survives that best.
Sizes verified August 2026. Platforms move these goalposts without notice — when a number here has drifted, the aspect ratio still holds, and the ratio is the part that matters. The FNDRY39 Image Resizer applies these sizes to a real image.
Fill in the fields. There is nothing to upload because there is nothing to send — the numbers you enter never leave this tab.
The arithmetic runs in your browser, on your own device, and the answer updates with every keystroke. Nothing is sent anywhere — so there is no record of what you earn, what you owe, or what you are thinking of buying.
One press puts it on your clipboard, ready to paste where you need it. There is no file to download — the result is text, not a document. Nothing is remembered — reload and the fields go back to their defaults, so copy anything you want to keep.