How to Add Social Media Icons to an Email Signature
Enhance your email signature by adding social media icons. Discover step-by-step instructions to turn every email into a powerful marketing tool.

Nothing says we don't get this social media thing quite like a Facebook cover photo with cut-off text or a stretched-out logo. It’s the first thing people see on your Page, and getting it wrong instantly undermines your credibility. This guide will give you the right dimensions and a simple, repeatable process to create a cover photo that looks sharp and professional on every device, every time.
The problem isn't your image, it's the screen. Your Facebook cover photo is displayed in two completely different shapes: a wide, short rectangle on desktop computers and a taller, narrower rectangle on mobile phones. Facebook doesn’t use two separate images, instead, it shows different parts of the same image depending on the device.
This is where the trouble starts. If you design your cover photo only for desktop, the sides will get chopped off on mobile, cutting off your text or important parts of your graphic. If you only design for mobile, you'll end up with a cropped photo that looks strange and has empty sections at the top and bottom on desktop.
The solution isn't to create two separate photos. It's to create one smart photo designed with a "safe zone" in mind.
Forget trying to remember all the different cropping sizes. Use this single template to build your cover photo, and it will work everywhere. The trick is to create an image that contains both the full width of the desktop view and the full height of the mobile view.
Your ideal canvas size is 820 pixels wide by 360 pixels tall.
Why these numbers? Because 820 is the *maximum width* (needed for desktop) and 360 is the *maximum height* (needed for mobile).
When you use an 820 x 360 px canvas, here's what happens on each device:
This leaves us with the most important area of all: the piece in the very middle that is visible on both devices universally. This is your true safe zone where all critical information - your logo, main headline, call to action, and faces - must be placed.
Your universal safe zone is the central rectangle measuring 640 pixels wide by 312 pixels tall. Everything outside this area is decoration that may or may not be seen.
Let's put this knowledge into practice using a free tool like Canva, but the principles apply to any design software (like Adobe Photoshop, Figma, or VistaCreate).
Don't use a preset Facebook cover photo template. They are often outdated or don't account for the mobile cropping we've just discussed.
You now have the perfect canvas that accounts for both desktop width and mobile height.
Before you add any text or logos, you need to visualize the safe area. Most design tools have rulers and guides you can use for this.
To find the mobile-safe area (center view):
To find the desktop-safe area (top/bottom view):
The rectangle in the very middle, defined by these four guides, is your universally safe 640 x 312 px area. Anything important you add to your design should live entirely inside this box.
Now comes the fun part. As you build your design, follow these simple rules:
Think of it as a photo shoot. The main subjects are in the center of the frame, but the background still needs to be visually appealing, even if parts of it are out of the shot.
Once you are happy with the design, save your file. Here are the best practices for file formats:
When you upload your image to Facebook, it may ask you to reposition it. Because you designed it perfectly on your 820 x 360 canvas, you shouldn't need to drag it at all. Just click "Save changes".
Even with the right dimensions, a few common design flaws can reduce your cover photo’s impact.
On desktop Pages, your profile picture sits in the lower-left section of the cover photo. On older layouts, it sat right in the middle. Be mindful of this on your current page's layout and avoid placing your main headline or a call to action in a spot where the profile pic might obstruct it, especially when viewed on mobile.
Your cover photo isn't an instruction manual. It's a billboard. Use a short, powerful headline that communicates your value instantly. Keep the text large, bold, and easy to read with high contrast against the background. Remember that more than half of your audience will see it on a small phone screen - if they have to squint to read it, you've lost them.
Your Facebook Page has a big blue button just below the cover photo (e.g., "Shop Now," "Learn More," "Contact Us"). Smart brands use their cover photo to draw attention to it. Consider adding a subtle visual cue, like an icon or an arrow pointing down towards the button, to encourage more clicks. It's prime real estate, so use it as more than just a picture, make it a lead-generation tool.
Perfectly formatting your Facebook cover photo comes down to one simple strategy: start with an 820 x 360 pixel canvas and place all your text, logos, and essential graphics within the central 640 x 312 pixel "safe zone." This one move guarantees that nothing important ever gets cut off, no matter where someone sees your Page.
We know from experience that managing visual assets and sizes across every social network is a huge pain. At Postbase, my team and I built a visual calendar specifically to help you plan and see everything at once - so you always know what your brand looks like on every channel. It removes the guesswork and tedious spreadsheet work from managing your brand's presence, letting you schedule all your content for everywhere in just a few clicks.
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