Aisha Patel, MS, PMP
Founder & CEO
aisha@lumenworks.examplePremiumlumenworks.example
Add a company logo without letting it take over the signature.
A logo should reinforce the sender's organization after the recipient can identify the person. Prepare the asset for email, give it enough contrast, keep the contact details as text, and test what remains when images do not load.
Reviewed by the Sign Pulsar product team · September 7, 2026Walkthrough screenshot
A logo used as a supporting brand element
Step by step
Prepare and add a logo that works in email
- 1
Start with an authorized source file
Use a current company mark that you are permitted to publish. Export it from a clean source rather than copying a small image from a webpage or screenshot.
- 2
Choose the right background treatment
A transparent PNG can work well when the logo has enough contrast on both light and dark surroundings. A deliberate solid background may be safer for marks that disappear or gain halos after conversion.
- 3
Size for the displayed role
The logo should support the name and company rather than become a banner. Google recommends roughly 70–100 pixels high by 300–400 pixels wide for Gmail signature images, with a 100-by-1000 maximum; treat that as Gmail-specific guidance, not a universal email rule.
- 4
Upload after Pro is confirmed
Once paid access is active, upload the logo through Sign Pulsar Studio. The application validates image type and size, then the final export references the approved public HTTPS asset.
- 5
Add meaningful alternate text
Use the organization name as concise alternate text where the export supports it. Do not stuff slogans or contact details into image descriptions.
- 6
Send images-on and images-off tests
Confirm that the logo looks sharp in the received message, then block remote content and verify that the sender's name, role, company, and contact links still make sense without it.
Fictional example
Example: the company mark stays secondary to the sender
Aisha Patel, MS, PMP uses a compact fictional LumenWorks mark beside her name, role, email, and website. The logo reinforces the company but does not replace its text name. On replies, she removes the headshot and retains a smaller logo so the thread remains easy to scan.
Aisha Patel, MS, PMP
Founder & CEO
aisha@lumenworks.examplePremiumlumenworks.example
Logo checklist before export
- Use a current asset you are authorized to publish
- Keep the company name in text even when the logo is present
- Check contrast against both light and dark surroundings
- Use Gmail's size guidance only when evaluating Gmail behavior
- Verify that the signature is still useful with remote images blocked
Keep the instructions current
Email apps change. These official sources were checked on September 7, 2026:
Specific answers
Questions about this guide
What size should an email signature logo be?
There is no universal size across every email client. Google recommends Gmail signature images around 70–100 pixels high by 300–400 pixels wide, with a 100-by-1000 maximum. Start conservatively and test the received message.
Should the logo be transparent?
Transparency can look clean when the mark has enough contrast, but some logos develop halos or disappear on dark backgrounds. Compare a transparent and a deliberate solid-background version before choosing.
Can I upload a company logo before paying?
No. Public visitors can preview fictional designs, but adding personal or company data, uploading images, customizing, copying, and exporting require an active Pro subscription.
Give your logo a professional place—not the whole stage.
Preview logo-led layouts free, then unlock Pro to upload your permitted company asset, personalize the design, and export it for testing.