What is the Facebook cover photo size?

820x312 pixels, a ratio of 2.63:1. That is the desktop display size. The app crops a narrower slice out of the middle of the same file, so design for the middle and let the ends go.

What if my image is not 820x312?

Facebook scales it to fit the slot and trims the overflow. What matters is not the pixel count but the middle: whatever sits there survives both the desktop and the mobile crop.

Is my image uploaded when I check it?

No. The file is opened by your own browser, measured, and forgotten when you close the tab. It is never sent to us, so there is nothing on our side to keep, leak or delete.

Can I use one image for the Facebook cover and the event cover?

You can upload the same file to both, but they are different shapes doing different jobs. An event cover is shown small in listings and needs one short line and a clear image, while a page cover is a header nobody reads closely. One export each takes a minute and beats one crop that suits neither.

Yes. This tool does its work in your browser, so whatever you type, paste or upload stays on your device. Nothing is sent to our servers, which is also why it keeps working if you go offline after the page has loaded.

Yes. Every tool here is free with no account, no credit card and no usage cap. They exist so that the people who need our scheduling product find us, which only works if the tools are genuinely useful on their own.

Do I need an account?

No. Open the page and use it. An account is only for OctoSpark itself, where you plan, schedule and publish a whole calendar rather than fixing one post at a time.

Can I use the output commercially?

Yes. Anything you produce here is yours, including for client and commercial work. We claim no rights over it and we do not watermark it.

OctoSpark

Free tool — runs in your browser

Facebook cover photo size

The Facebook cover photo size is 820x312 pixels, a ratio of 2.63:1. Check yours here and see how differently the desktop and mobile crops bite into it.

Every Facebook cover photo size

Every Facebook cover photo size, with its pixels, its ratio and what it is for.
Where it is used	Pixels	Ratio	What the number is for
Page cover, desktop	820x312	2.63:1	The measurement Facebook publishes, and what a laptop draws.
Page cover, mobile	640x360	16:9	The slice the app keeps, taller in proportion than the desktop one.
Event cover	1200x628	1.91:1	A different shape again, shown across listings at a fraction of its size.
Page profile photo	170x170	1:1	Sits over the lower left of the cover on a laptop and over its middle in the app.

Check an image you already have

Check it against

Choose an imageIt is measured on this device and never uploaded.

Choose a file and this says whether it fits, and what gets cropped if it does not.

Resize it to these pixels

Every Facebook cover photo size, in pixels

A Facebook cover is two images pretending to be one: the desktop measurement the help pages quote, and the narrower slice the app crops out of the same file for a phone.

Page cover, desktop: 820x312px, a ratio of 2.63:1. The measurement Facebook publishes, and what a laptop draws.
Page cover, mobile: 640x360px, a ratio of 16:9. The slice the app keeps, taller in proportion than the desktop one.
Event cover: 1200x628px, a ratio of 1.91:1. A different shape again, shown across listings at a fraction of its size.
Page profile photo: 170x170px, a ratio of 1:1. Sits over the lower left of the cover on a laptop and over its middle in the app.
Upload at twice these numbers where you can. Facebook downsamples cleanly, and the published figures are display sizes rather than upload limits.
The profile photo overlaps the cover in its lower left on a laptop and sits centred over it in the app, so that area is unusable on one layout or the other.
Covers are compressed harder than feed images. Flat colour and large type survive the pass; fine texture and thin lines do not.
An event cover is not a page cover with a new caption. It is a different ratio, shown in listings at thumbnail size.

Check a file you already have against the Facebook cover photo size

The honest test for a cover is not whether it is the published width but whether the part you care about sits in the middle. Measuring the file names the axis about to be trimmed before somebody else discovers it on their phone.

Pick the target first. This page carries 4 Facebook cover photo sizes, and a verdict only means something against one of them.
Choose your image. It is opened by this browser tab and measured on a canvas, so the file never leaves the machine you are sitting at and there is no queue or upload to wait for.
Read the result: an exact match at 820x312, the same 2.63:1 shape at a different scale, or a crop with the axis that loses pixels named.
If it is wrong, open the Facebook resizer linked underneath. It exports to these exact numbers instead of leaving the decision to the platform.
Whatever the verdict, keep the logo and any words inside the middle half of the frame, because that is the only region both layouts show.

What Facebook does when the shape is wrong

Facebook never refuses a cover. It scales what it is given to the width of the slot and crops the height, or the reverse in the app, so you get a header that works on the machine you designed it on and nowhere else.

A wide banner made for a website loses its top and bottom, because the app wants a proportionally taller slice than a laptop does.
A design that reaches the left edge is covered by the profile photo on desktop, which is a crop you cannot see while you are making it.
A small file stretched to the slot width is softened twice, once by the upscale and again by the compression pass that follows.

The cover is the least valuable image on a Facebook page

It is worth being blunt about this one. Hardly anybody visits a page to look at its header, and the people who see it mostly searched for you by name already, so it deserves an hour rather than a weekend.

A plain background with the name and one line about what you do beats a collage, because it is the only version that reads at every crop.
If a cover carries an offer or a date it will be stale in a month and nobody will mention it. Put those in a pinned post instead.
Feed images are where the reach is. If there is one spare hour, spend it on the next post rather than on the header.

The rest of the job

You just fixed one post. Now do the month.

The facebook cover photo size solves one piece of one post. OctoSpark plans, writes and schedules the whole calendar across every network you use, publishes it for you, and reports what actually performed.

One calendar for every network
Schedule once, publish everywhere
Drafts written in your own voice
See what actually performed

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Frequently asked questions

How this tool works, what it cannot do, and what happens to what you put into it.

What is the Facebook cover photo size?
820x312 pixels, a ratio of 2.63:1. That is the desktop display size. The app crops a narrower slice out of the middle of the same file, so design for the middle and let the ends go.
What if my image is not 820x312?
Facebook scales it to fit the slot and trims the overflow. What matters is not the pixel count but the middle: whatever sits there survives both the desktop and the mobile crop.
Is my image uploaded when I check it?
No. The file is opened by your own browser, measured, and forgotten when you close the tab. It is never sent to us, so there is nothing on our side to keep, leak or delete.
Can I use one image for the Facebook cover and the event cover?
You can upload the same file to both, but they are different shapes doing different jobs. An event cover is shown small in listings and needs one short line and a clear image, while a page cover is a header nobody reads closely. One export each takes a minute and beats one crop that suits neither.
Is my data private?
Yes. This tool does its work in your browser, so whatever you type, paste or upload stays on your device. Nothing is sent to our servers, which is also why it keeps working if you go offline after the page has loaded.
Is this really free?
Yes. Every tool here is free with no account, no credit card and no usage cap. They exist so that the people who need our scheduling product find us, which only works if the tools are genuinely useful on their own.
Do I need an account?
No. Open the page and use it. An account is only for OctoSpark itself, where you plan, schedule and publish a whole calendar rather than fixing one post at a time.
Can I use the output commercially?
Yes. Anything you produce here is yours, including for client and commercial work. We claim no rights over it and we do not watermark it.