Adding a LinkedIn icon to your email signature takes just a few minutes, whether you build it manually in your email client or use a free generator tool. The process involves placing a small LinkedIn logo image in your signature and hyperlinking it to your profile URL. Here’s how to do it in the most popular email clients, with the right image specs so it looks clean on every screen.
Get the LinkedIn Icon
LinkedIn provides official logo files for download at brand.linkedin.com/downloads. You’ll find several versions, including the square “in” bug icon that works best at small signature sizes. By downloading, you agree to LinkedIn’s brand usage terms, which mainly require you to use the logo as provided without altering its colors or proportions.
If you’d rather skip the brand portal, a simple Google Images search for “LinkedIn icon PNG transparent” will turn up plenty of options. Just make sure the file has a transparent background so it blends with any email client’s default white or light-gray signature area.
Recommended Icon Size
Social media icons in email signatures should be square and between 20 and 32 pixels tall. That range keeps the icon crisp without overwhelming your contact details. If you want a sharper image on high-resolution screens (Retina displays, newer phones), export or save the icon at double the display size. For example, if you want it to appear 24 pixels wide, use a 48-pixel file and set the display dimensions to 24×24 in your signature editor.
Keep the file size under 50KB. Larger images can slow loading and sometimes get flagged by spam filters. PNG format is ideal because it supports transparency and stays sharp at small sizes.
Find Your LinkedIn Profile URL
Before building the signature, copy the link you want the icon to point to. Log in to LinkedIn, click your profile photo, and look at the URL in your browser’s address bar. It will look something like linkedin.com/in/yourname. You can also grab a custom URL by going to your profile, clicking “Edit public profile & URL” on the right side, and customizing the slug. A clean URL like linkedin.com/in/janedoe looks more professional than one with a string of random numbers.
Add the Icon in Gmail
Open Gmail and click the gear icon in the top right, then “See all settings.” Scroll down to the Signature section. If you already have a signature, click into it. If not, click “Create new” and give it a name.
Position your cursor where you want the LinkedIn icon to appear, typically on its own line below your name and title, or inline next to other social icons. Click the “Insert Image” button in the signature toolbar (it looks like a small photo icon). Upload your LinkedIn PNG or paste a URL to a hosted version of the image. Once inserted, click the image to resize it. Gmail offers small, medium, large, and original size options. Small usually works well for a social icon.
To hyperlink the icon, select the image by clicking on it, then click the link button in the toolbar (the chain-link icon). Paste your LinkedIn profile URL into the URL field and click OK. Scroll to the bottom of the settings page and click “Save Changes.”
Add the Icon in Outlook
The steps vary slightly depending on whether you use Outlook on the web, the desktop app, or the new Outlook for Windows, but the core process is the same.
Open a new email message. On the Message menu, select Signature, then Signatures. Under “Select signature to edit,” choose an existing signature or click New and give it a name. In the editor, place your cursor where the icon should go and click the image button (“Insert picture inline”) to upload your LinkedIn PNG.
To turn that image into a clickable link, double-click the picture to select it, then click the link icon in the toolbar. Paste your LinkedIn profile URL and press OK. If the link doesn’t stick to the image on your first try, a reliable workaround is to type a single space before the image, select both the space and the image together, then click the link icon and add your URL. After the link is applied, you can delete the extra space, and the image will retain the hyperlink. Click Save to finish.
Add the Icon in Apple Mail
Open Mail, go to Settings (or Preferences on older macOS versions), and click the Signatures tab. Select the email account you want to use, then create or edit a signature. Apple Mail’s signature editor is more limited than Gmail’s or Outlook’s, so the easiest approach is to build your signature in a rich text document first.
Open TextEdit, make sure it’s in Rich Text mode (Format > Make Rich Text), and type out your signature details. Drag your LinkedIn icon image into the document where you want it. To add a hyperlink, you’ll need to compose the signature in a webpage or HTML editor and paste it in, since TextEdit doesn’t natively support linking images. Alternatively, use one of the generator tools described below, copy the finished signature, and paste it into the Apple Mail signature editor.
Use a Free Signature Generator
If manually inserting and linking images sounds tedious, free signature generator tools handle it automatically. HubSpot’s Email Signature Generator is one of the most popular. It’s browser-based, requires no account, and walks you through a form where you enter your name, title, phone number, and social media URLs. When you paste your LinkedIn profile link, the tool automatically places a LinkedIn icon in your signature and hyperlinks it. Once you’re done, you copy the generated HTML signature and paste it into Gmail, Outlook, Apple Mail, or Yahoo Mail’s signature settings.
HubSpot offers six templates and supports icons for LinkedIn, Facebook, Instagram, X (formerly Twitter), and WhatsApp. The entire process takes under five minutes. Other free options include WiseStamp, MySignature, and Mail-Signatures.com, all of which provide pre-built social icon slots where you simply drop in your profile URL.
Add Alt Text for Accessibility
Many recipients have images turned off in their email client for privacy or bandwidth reasons, and people with vision impairments rely on screen readers. Without alt text, your LinkedIn icon will be invisible or read aloud as something unhelpful like “image001.png.”
In Outlook, right-click the image in your signature editor and select “Edit Alt Text,” then type something short and descriptive like “LinkedIn profile” or “Connect on LinkedIn.” In Gmail, click the image after inserting it and select “Edit alt text” from the options that appear below. Keep it concise. The alt text should tell the reader what the icon does, not describe what it looks like.
Prevent the Icon From Showing as an Attachment
One of the most common frustrations with signature images is that some email clients, especially on mobile, display them as file attachments at the bottom of the message. This happens when the image is embedded as an attachment rather than referenced as an inline image.
The most reliable fix is to host your LinkedIn icon on the web (using an image hosting service, your company website, or a cloud storage link that serves the file directly) and insert it via URL rather than uploading it from your computer. When the image is pulled from an external URL, email clients treat it as inline content rather than an attached file. Signature generator tools handle this automatically, which is another reason they’re worth considering if attached-image icons have been a recurring problem for you.