Facebook Image Resizer
Drop an image, pick the Facebook size, crop or fit it, download. Nothing leaves your browser.
The short answer
For a feed post, resize to 1080 x 1350. It is a 4:5 portrait, it takes the most room a Facebook feed gives an image, and the same file posts to Instagram and LinkedIn without a second export. 1080 x 1080 works too if you want one square that goes anywhere.
The two landscape sizes are for different jobs. 1200 x 630 is the card a shared link draws. 851 x 315 is the page cover, and desktop and mobile crop it differently, so anything that has to be read belongs in the centred 640 x 312 that both of them show.
Built and checked by Matúš Koleják, Co-founder, AI Social Media Now. Last checked September 2026.
What the sizes here come from
- Facebook Help Center, Page profile picture and cover photo dimensions for the 851 x 315 cover photo size.
- Buffer, Social media image sizes for every platform for the maintained third party figures for feed, link and header sizes where the platform prints none.
The sizes match the ones argued for in Facebook cover photo size. The examples on this page were produced by the same code the tool runs.
Posts that hold up next to
Every Facebook size the tool makes
The pixel sizes Facebook displays, not the sizes a design app offers in a dropdown. Upload at these and there is nothing left for Facebook to crop or recompress on your behalf.
| Use | Pixels | Ratio | What it is for |
|---|---|---|---|
| Feed portrait | 1080 × 1350 | 4:5 | 4:5. Takes the most room in the feed, and the same file posts to Instagram and LinkedIn. |
| Square | 1080 × 1080 | 1:1 | Safe anywhere in the feed, a little smaller than portrait on a phone. |
| Link image | 1200 × 630 | 1.9:1 | The landscape card a shared link shows. Keep the words away from the edges. |
| Story | 1080 × 1920 | 9:16 | Full screen, 9:16. Keep text clear of the top and bottom. |
| Page cover | 851 × 315 | 2.7:1 | Facebook's own figure. Design inside the centred 640 x 312, which is all a phone shows. |
Four posts, before and after
Each post on the left was designed at some other size. The one on the right is what this tool returns for it, drawn by the same code, at the size and in the mode named underneath.
How to resize an image for Facebook
1
Drop your image
Choose a file, drag it onto the box or paste a screenshot. It is read by your browser and never uploaded, so a client's unreleased artwork is as safe here as on your desktop.
2
Pick the Facebook size
Each size is one Facebook actually displays, with a line on what it is for. The preview redraws at the real pixel size as you switch, and says how much a crop would cut.
3
Crop or fit, then download
Crop fills the frame and you drag to choose what stays. Fit keeps the whole picture and fills the gap with a blurred copy or a colour. Download a JPG or a PNG at exactly the size you picked.
Crop or fit: the one choice that matters
A picture that is a different shape from the frame has to give something up. Crop gives up edges: the image is scaled until it covers the frame and the overhang is cut, which keeps the post full bleed. It is right for photographs with room around the subject. Drag the preview and you choose which edge goes.
Fit gives up nothing from the picture and spends the frame instead: the whole image sits inside it and the leftover band is filled. It is right for anything with words near the edge, such as a designed post, a screenshot or a slide, where a crop would take letters with it. A blurred copy of the image makes the band look intentional; a flat colour from your brand makes it look designed.
Questions
What size should a Facebook post image be?
1080 x 1350 for a portrait post, which is the shape that fills the most of a phone's feed. 1080 x 1080 for square. Facebook does not show a feed image wider than 1080, so a larger file is only shrunk on upload.
What size is a Facebook cover photo?
851 x 315, which is Facebook's own figure. Desktop shows about 820 pixels of that width and a phone shows about 640, so keep text and faces inside a centred 640 x 312, and leave the bottom left corner empty for the profile picture.
What size is a Facebook link preview image?
1200 x 630, a 1.91:1 landscape. It is the image a shared link draws in the feed, and it is set on the page being linked to rather than uploaded to Facebook, so this size is for whoever builds that page.
How do I fit a whole photo into a Facebook post without cropping?
Choose Fit. The photo is scaled until all of it is inside the frame, and the empty band is filled with a blurred copy of it or a flat colour. Nothing is lost off the edges.
Is the same image fine for Facebook and Instagram?
Yes, at 1080 x 1350. It is 4:5 on both, and it is the one file that posts to the Facebook, Instagram and LinkedIn feeds without being re-exported.
Is my image uploaded anywhere?
No. The resize happens in your browser and the download is made on your device. No account, no watermark.
Or skip the resizing entirely
AI Social Media Now reads your website and designs your feed posts and stories for you, already at the size each network wants, in your colours and your voice. Every post on the gallery wall was made that way.
Make my first posts free