Best Email Signature Logo Size, Banner Size & Image Size?

Read time: 13 min
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Best Email Signature Logo Size, Banner Size & Image Size?
Try Publicate For Free Today
Read time: 13 min

Email signatures are one of the best and most effective tools to market your brand. It’s like handing out a business card each time you click send. Recipients are assured that they are interacting with a real human and not some version of artificial intelligence.

If you need help crafting an email signature logo size, pull up a chair and read on! We’re going to share what you need to know and introduce how you can use a tool to remove all the guesswork.

Guide Index

What is the Best Email Signature Size?

When it comes to email signatures, size does matter! There are a few variables that must be considered when working out your email signature logo size. What looks great on a PC or Mac will be less appealing on a mobile device.

General guidelines are:

  • Small image files
  • Aim for 300 X 600 pixels
  • Use common image formats like JPEG or PNG
  • Image resolution of 72 dpi
  • The email signature size in inches is 8 inches wide and 2 inches tall when converted from pixels

Now, let’s leave generalities behind and dive into the specifics of email signature size and email banner size.

What is the Best Mobile Email Signature Size?

Studies on the use of mobile vs desktop devices show that it’s almost a 50-50 split. Your challenge is creating an email signature that loads glitch-free and looks professional on any device.

The screen size on mobile devices is somewhere between 320 and 500 pixels so email signatures shouldn’t dominate the whole screen. Somewhere around 320 pixels wide is a good email signature standard size.

Remember that if your file is too large, your email may be dropped into the recipient’s spam folder. Avoid!

While this is already a lot to think about, you can leverage the use of an email signature generator that has all of these best practices built in. That way, you can rest assured knowing that your email signature adheres to all guidelines so that your emails always look in tip-top shape when you hit send.

What is the Best Desktop Email Signature Size?

Email signature sizes for desktops have a little more leeway. Ideally, they should be optimal for any device but if you’re confident that your recipients are desktop users, you can use a signature of up to 600 pixels wide and 200 pixels high. This works well for most email clients including Gmail and Outlook.

We usually don’t know for certain whether a recipient will be checking in on their phones or desktops so 450 pixels wide won’t present many scaling issues.

What is the Best Email Signature Banner Size?

An email banner is an image that is at the very bottom of the email signature. It’s the place to promote your brand or links to your website. But, they can also take up valuable space so think about whether it’s beneficial to have one and learn what the best email banner size is.

Your email banner is best as an oblong, rectangular shape - it looks better on mobile devices. Its maximum size should be 600 pixels wide and 100 pixels high.

Picture from Pexels

Why is Email Banner Size Important?

Email banners should be pleasing to the idea and convey information and imagery clearly and concisely. Too much information is a cluttered roadblock. Email banners add a splash of color to what is usually a wall of uniform-colored text but too much color overwhelms so restrain your inner Andy Warhol.

Remember, loading large files can be quite time-consuming on certain devices or where internet connectivity is slow. Keep it simple.

An email signature generator not only helps you create your perfect signature in the proper sizing, but it also gives you the freedom to design your signature however you like.

With drag-and-drop functionality and a visual editor, you have the skeleton in the form of a template, with as much customisation as you’d like to include.

What is the Best Email Banner File Size?

As mobile and desktop devices improve screen resolutions there is more leeway for email banner size. If you’re using a white background you have flexibility in sizing the image to the content. But, if there’s going to be a splash of color, keep the size between 600 and 700 pixels wide.

Keep the image under 1728 pixels and the overall size under 102Kb. Don’t forget to compress the images before adding them to a template!

What is the Best File Size to add Email Banner Animation?

Animation can be a helpful tool when designing email banners. Animated gifs make your email stand out and can add a professional look that makes your email appear more modern and advanced.

Animation gives you an aura of being approachable and inviting and they tend to draw more clicks than static images. Keep the animation small and relevant so that you don’t slow down the email. The best file size? Under 200kb is the best rule of thumb.

What are the Best Logo Dimensions for an Email Signature?

You have a terrific design in mind and are eager to attach it to your outgoing mail but let’s make sure you have the best email signature logo size. While there isn’t a hard and fast rule about what the size should be, there are some sound parameters to work within.

Logos vary in size and size and saving your image at 72 dpi is generally a happy compromise. A logo should be 150 to 300 pixels in width but saved at 2X the resolution which brings it up to 300 to 600 pixels wide. The double resolution ensures that your awesome logo is crisp and clear on any device.

How to Resize Logo for Email Signature in Gmail?

We’ve covered a lot of ground about email signatures but we’d be remiss if we didn’t get a bit more focused and discuss working with specific email platforms. So, let’s begin with Gmail and look at the topic “resize image for email signature.”

  • In the Gmail app, start by selecting “settings” and then “see all settings.”
  • Scroll to “signature” where you can add or customize the format.
  • Insert your image by choosing the image icon in the toolbar.
  • After you’ve uploaded the photo, resize it by selecting small, medium, or large.
  • Click “save changes” and you’re done!

How to Resize Logo for Email Signature in Outlook?

Outlook prefers that images are resized before putting them into email signatures but there is a way to get around this by doing the following:

  • Open Outlook and create a new email.
  • In options click the insert tab and then select “Signature.”
  • Choose which signature to be resized.
  • Once the image has been inserted into the email, drag the selected picture to the edge to adjust its size.
  • When you’re satisfied with the resizing, select all (ctrl + A) and copy (ctrl + C). If you own a Mac the commands are “Command + A” and then “Command + C.”
  • Go to “insert” and then “signatures”, where there will be the “Signatures and Stationary” box. Select the source signature.
  • In the edit section, paste in the new one after cutting the old one.
  • Be sure to click “save changes!”
Picture from Pexels

How to Resize Logo for Email Signature in HTML?

If you’re comfortable working in HTML, here are the steps you’ll need to take to resize an image for email signature online.

  • Go to “file” and click “options.”
  • When the new window opens, select the mail tab and find the “signatures” button in the right pane.
  • The new pop-up window will contain all your signatures which are in three formats - Text, Rich Text, and HTML.
  • Right-click on HTML and click “open with Microsoft word.”
  • Select your picture and drag it to the edge to resize.
  • Save changes on a PC by using “ctrl + S” or on a Mac by using “command + S.”
  • Close the file, reopen Outlook and you will see that your resized logo will be in new emails.

What is the Best Email Signature Image Format?

Images are usually either a logo or profile pic. Your brand and its design play a large part in the height of that image. Earlier, we mentioned that the total ideal size of the signature file should be a maximum of 200,000 kb. The image should be in the neighborhood of 30,000 kb and in JPEG, GIF, or PNG format.

Remember, if your image size is too large, it will bog down the email which may leave a recipient wondering if you are as professional as they need you to be.

How many Images Should be in your Email Signature?

Less is more is the mantra when thinking about the number of images in your email signature. One or two quality images, such as a headshot and company logo, are more than sufficient.

More than that, the visual is very busy and amateurish. Transparent backgrounds in images can be tricky because the text may have rendering issues. Don’t forget that if your images are over 15kb they are shown as attachments in Google inboxes.

What is the Best Social Media Icon Size for Email Signatures?

The various social media platforms are an excellent way to market your brand and it’s helpful to include the icons in your email signature. If you’re going to highlight your social media, make sure that each account is current and engaging.

You don’t want the icons overpowering your email signature so keep them small at roughly 22 pixels X 22 pixels. Icons are universally recognized and don’t need to be large!

What are the Best Email Signature Options for Gmail?

Gmail has some specific guidelines to help you with the design of email signature logo size. In the ideal world, your dimensions are 170 pixels high and 200 pixels wide. Note that there is also a 10,000-character limit.

Images that are 80 pixels high and 200 pixels wide are optimum and as far as the best format for Gmail goes, stick with PNG images.

What are the Best Email Signature Options for Outlook?

If you’re using Outlook, 170 pixels high and 200 pixels wide is the email signature size you’re aiming for and the character limit is 5,000. Make sure your image sizes remain within 650 pixels wide. If the image is larger than 10kb you will find that you have to resize it.

Logos can be 100 pixels wide and 100 pixels high but if you’re resizing don’t forget to lock the aspect ratio so your proportions aren’t skewed.

What to Avoid with Email Signatures?

Mistakes can be made when creating your email signature but we’ll help you avoid some of the pitfalls! Here are a few suggestions:

  • Employees shouldn’t customize their email signature sizes - consistency is vital to a brand.
  • More than 2 images create clutter and fail to convey a professional message.
  • Images should also make sense and align with your company’s brand.
  • Font sizes should be limited. Too many and it becomes muddled.
  • Don’t add social media icons if those platforms aren’t regularly updated with fresh content.
  • If you’re using animation, test it across all platforms and devices.

Using an email signature generator tool can help to relieve the guesswork and checklist. You gain access to email signature templates that have all the best practices built-in. So, all you have to do is customize and personalize it with your information, and you’re ready to rock.

Wrap Up

Email signatures are simple, yet powerful tools to get your brand out there and to have people remember you. The right email signature logo size results in something that looks fabulous on all devices and is easily exported across the various email providers.

Add them to your emails and see how they positively impact your customer base and your bottom line!

Getting started is super easy with the help of an email signature tool. You have templates at your fingertips to choose from and the best practices inherently built-in, so you can save time designing the signature of your dreams while displaying the utmost level of professionalism.