How to add a QR code to your email signature

Short answer

Add a QR code to your email signature by creating a dynamic QR code in Linkbreakers, downloading it as a PNG, then inserting it as an inline image in your email client's signature editor. The code can link to your contact card, LinkedIn profile, booking page, or any URL — and because it's dynamic, you can update the destination later without changing the image embedded in your signature.

How it works

An email signature QR code is an image (PNG) that encodes a URL. When a recipient views your email on a desktop screen, they can scan the code with their phone to open a link instantly — no copy-pasting, no typing.

The key design choice is dynamic vs. static:

• A static QR code encodes the destination URL permanently. To change where it points, you'd need to regenerate the image and re-upload it to every email client you use.
• A dynamic QR code encodes a short redirect URL that resolves to your real destination. Change the destination in Linkbreakers any time, and every existing copy of the image follows the update automatically.

For an email signature that may be seen thousands of times across months or years, a dynamic code is almost always the right choice.

What to link to

The most effective email signature QR codes link to one of these destinations:

Destination	Best for
Digital contact card (vCard)	Easy contact saving on mobile
LinkedIn profile	Professional networking and outreach
Booking or scheduling page	Consultants, sales reps, support teams
Portfolio or case study	Freelancers, agencies, designers
Product demo or landing page	SDRs and account executives

Step-by-step

1. Create the QR code in Linkbreakers

1. Go to Create → Link and enter your destination URL.
2. Give the link a name you'll recognize later (e.g., "Email signature – contact card").
3. Click the QR code icon to open the designer. Customize colors and add a logo if you like — a branded code tends to get more scans than a plain black-and-white one.
4. Download as PNG at 400×400 px or higher. Avoid SVG for email clients — inline SVG support is inconsistent across mail apps.

If you're sharing contact details, create a contact card in Linkbreakers and point the QR code to that. It renders cleanly on any mobile device and can be updated without touching the image.

2. Insert the image in your email client

Gmail:

1. Settings → See all settings → General → Signature.
2. In the editor, click Insert image and upload your PNG.
3. Right-click the image and set it to display at roughly 100×100 px.

Outlook (desktop):

1. File → Options → Mail → Signatures → Edit.
2. Click the Picture toolbar icon and select your PNG.
3. Resize to ~100×100 px by dragging the corner or using the Format Picture dialog.

Apple Mail:

1. Preferences → Signatures → select your signature.
2. Drag and drop the PNG into the signature body.
3. Hold Shift while dragging a corner to resize proportionally.

Google Workspace (admin-managed signatures): Centrally managed signatures require images hosted at a public URL. Upload the PNG to your website or a CDN, then reference it via image URL in the admin console. The Linkbreakers QR image URL (from your dashboard) works here as long as your account is active.

3. Test before rolling out

Send yourself a test email and open it on both desktop and mobile. Verify:

• The image renders inline and not as an attachment
• The code scans correctly from an iOS and an Android camera
• The destination loads on mobile without a login prompt

4. Track scans

In Linkbreakers, the link behind your email signature QR records every scan: timestamp, device type, and approximate location. Over time this shows how many recipients engage with your signature versus ignoring it. You can also see whether outreach to certain industries or roles results in higher scan rates. See how to track who scanned your QR code for details on reading the data.

Limits and caveats

Some email clients block external images. Outlook for Windows blocks remotely hosted images by default — recipients see a broken image icon until they click "Download pictures." Inline-embedded images (uploaded directly through the signature editor) are less affected, but not immune. Keep a plain-text URL as a fallback beneath the QR code.

Small display size reduces scan reliability. Display the QR at 90–120 px square in the email. Smaller than that and the code becomes difficult to scan. The source file should be at least 400×400 px even though the display size is smaller — this prevents blurriness.

Image file size affects deliverability. Large attachments can trigger spam filters. Compress the PNG to under 100 KB before uploading. A 400×400 px PNG at medium compression is typically 20–50 KB.

Dynamic codes depend on an active account. If your Linkbreakers subscription lapses, the redirect URL stops resolving and the QR code breaks for all existing recipients. Using a branded short domain gives you more control and looks more trustworthy to recipients who hesitate before scanning an unfamiliar link.

Frequently asked questions

Should I use a QR code or just a hyperlink in my email signature?

Both. A hyperlink serves people reading on a phone; a QR code serves people reading on a desktop or laptop who want to save something to their phone without switching apps. A person reading your email on a laptop might scan the QR to add you as a contact — something that's faster than copying your email and searching manually. They're complementary, not either/or.

What size should the QR code appear in my signature?

Display it at 90–120 px square. Anything smaller becomes hard to scan from a normal reading distance. The downloaded source image should be 400×400 px or larger so it stays sharp when email clients resize it. See which QR code export format to choose for full resolution and format guidance.

Can I track how many recipients scan my email signature QR code?

Yes. Every scan of a Linkbreakers dynamic code is logged in your dashboard with timestamp, device type, and location. Over time you can see whether outreach campaigns generate real interest or just inbox deletes. See how QR code tracking works for a full breakdown of the data you get.

What happens when I update my phone number or job title?

If you used a dynamic QR code pointing to a Linkbreakers contact card, update the card in your dashboard — every existing scan of the code will see the updated information immediately. No need to regenerate the image or update any email clients. This is the main reason to use a contact card rather than a static vCard file.

Is it safe to put a QR code in a business email?

Yes, as long as the destination is under your control. From the recipient's perspective, scanning a QR code is equivalent to clicking a link. Using a branded short domain (e.g., links.yourcompany.com) instead of a generic redirect URL increases trust for recipients who are careful about scanning unfamiliar codes.