Facebook Cover Photo Size
851 by 315 — and the reason a cover that looks right on a computer often looks wrong on a phone, which is that they crop it differently.
Runs on your device — images are never uploadedDrop your images here
or click to browse — as many as you like
JPG · PNG · WebP · HEIC
Enlarging past the original cannot add detail that was never captured. The tool says so when it happens rather than quietly handing back something softer.
How it works
Three steps, no account, and the image never leaves your computer.
Drop the image in
JPG, PNG, WebP or an iPhone HEIC. Several at once is fine — they all come out the same size.
The size is already set to 851 by 315
Change it if you need something else. Cover crops to fill, Contain fits the whole picture and pads the rest.
Check the preview, then save
The crop is shown before anything is written, so what you get is what you saw.
What people resize to this
A page or a business cover
With the name and logo in the middle, where a phone still shows them.
A seasonal or campaign banner
Changed often, so getting the size right once and reusing it saves the guessing every time.
A photo you already like
Cropped deliberately to 851 by 315 rather than letting Facebook choose which part survives.
A design made somewhere else
Exported at whatever size the tool defaulted to, and resized here before it gets compressed twice.
One image, two different crops
851 by 315 pixels is the size Facebook asks for, and uploading exactly that avoids the compression a larger file gets on the way in.
The complication is that a computer and a phone do not show the same part of it.
A phone shows a narrower slice
On a desktop browser you see the full 851 by 315. On a phone the layout is narrower and taller, so the sides are cut off and slightly more height is shown. The middle is the only region both of them display.
The practical version: keep anything that matters inside the middle two thirds. Logos, names, faces and text all belong there. The outer sixth at each side is decoration that half your visitors will never see.
| Size | Ratio | File limit |
|---|---|---|
| 851 × 315 px | 2.7:1 | no practical limit |
The profile picture covers part of it too
On a page, the profile picture sits over the lower-left of the cover on desktop and shifts on mobile. Whatever is behind it is gone, and it moves depending on the layout, so the bottom-left corner is not a place to put anything.
Why not upload something bigger
Facebook re-encodes anything you give it. A 2000-pixel-wide cover is scaled down and compressed by its own settings, which is what produces the soft, slightly blocky covers you see everywhere. Sending exactly 851 by 315 leaves it much less to do.
If a cover still looks soft after that, a PNG usually survives Facebook's compression better than a JPG for anything with text or flat colour in it.
Cover or Contain, and what each throws away
Two ways to fit one shape into another, and the tool offers both.
Cover fills the frame completely and crops whatever does not fit. Nothing is distorted and nothing is padded; some of the picture is simply gone. This is what you want almost always.
Contain fits the whole image inside the frame and fills the leftover space with a colour you choose. Nothing is lost, but the picture is smaller and there are bars. Right when the whole frame matters — a poster, a diagram, a design you cannot cut.
Neither ever stretches. An image squashed to fit is the one mistake that cannot be undone by looking at it again later.
Nothing is uploaded
The resizing happens in your browser using your own processor, so the image never leaves your machine. That is why there is no file-size limit, no queue and no account, and why a batch of forty is limited by your computer rather than by somebody’s free tier.
Common questions
What size is a Facebook cover photo?
851 by 315 pixels. Uploading exactly that avoids the extra compression Facebook applies to anything larger.
Why does my cover look different on my phone?
Because phones show a narrower, taller slice of it — the sides are cut off. Keep names, logos and faces inside the middle two thirds, which both layouts display.
Why does my cover look blurry?
Facebook re-encodes what you upload. Sending exactly 851 by 315 leaves it least to do, and a PNG usually survives better than a JPG for text or flat colour.
Where does the profile picture sit?
Over the lower-left on desktop, and it shifts on mobile. Do not put anything you need in that corner.
More tools
Every one of them runs on your device. No uploads, no accounts.