A free email signature generator online
Most professionals send thousands of emails a year, and every one ends with a signature. It's the one piece of branding that reaches every client, supplier and colleague you write to, and it's often the fastest way for someone to find your phone number or website.
This email signature generator online builds that block for you. Fill in your details, choose one of four layouts, set a colour and font, and copy the finished signature straight into your email app. No account, no watermark, and no branding added to your signature. Everything is built in your browser, so your name, phone number and email address never leave your computer.
The output is table-based HTML with inline styles, which is the format email clients actually understand. That means it looks the same in Gmail, Outlook, Apple Mail and on phones, rather than falling apart the way modern web layouts do inside email.
How to use the signature generator
- Enter your detailsName, job title, company, phone and email are the essentials. Add a website, address or department if they're useful to the people you write to.
- Pick a templateClassic puts a photo beside your details, Modern adds a coloured bar, Compact is text only in two tidy lines, and Card wraps everything in a tinted box with a button.
- Set the colour and fontMatch your brand colour, and stick to a web-safe font so it renders the same everywhere.
- Add extras if you need themA photo or logo, social links, a call-to-action button and a legal disclaimer are all optional.
- Copy and pasteClick Copy signature, then paste it into the signature settings of your email app. The instructions for Gmail, Outlook, Apple Mail and Thunderbird are next to the preview.
What to include in an email signature
A signature should answer one question: how does this person reach me or check my credentials? Everything else is clutter.
| Element | Include it? | Why |
|---|---|---|
| Full name | Always | The anchor of the whole block |
| Job title | Always | Tells the reader your role and authority |
| Company | Usually | Context, and often a legal requirement for business email |
| Phone number | One is enough | Two numbers make people hesitate about which to use |
| Email address | Optional | It's already in the header, but handy when emails get forwarded |
| Website | Yes | The easiest way for someone to check you out |
| Photo or logo | One, not both | Adds recognition; two images look cluttered |
| Social links | One or two | Only the ones you actually maintain |
| Booking or CTA button | If relevant | Useful for sales, consulting and freelancers |
| Quotes and images of quotes | Skip | They add size and rarely land well professionally |
Rule of thumb: three to six lines. If your signature is longer than your average email, it's too long.
Design rules that keep signatures readable
- Use web-safe fonts. Arial, Helvetica, Verdana, Tahoma and Georgia exist on almost every device. Custom web fonts are stripped by most email clients, so your careful typography falls back to Times New Roman.
- Keep the width under about 600 pixels so nothing is cut off on a phone.
- Limit yourself to two colours: a dark text colour and one accent. More looks like a flyer.
- Mind contrast. Light grey text on white may look elegant on your screen and disappear on someone else's.
- Don't rely on background colours for readability, because some clients strip them.
- Avoid a signature that's one big image. Many clients block images by default, and the reader would see nothing at all. Text plus one small image is the safe combination.
Images in email signatures
An image in a signature must live at a public web address. Email apps can't read a file from your computer, so you need to upload your photo or logo somewhere first: your own website, your company's media library, or any image host that gives you a direct link ending in .jpg or .png.
Keep it small. A headshot of 80 to 120 pixels square and a logo under 200 pixels wide are plenty. Save under 50 KB so the email stays light, and use the exact dimensions rather than scaling a huge file down in HTML, which wastes bandwidth and looks blurry on high-resolution screens.
Always set the image size in the markup, as this tool does, so the layout doesn't jump around while the image loads, and always include alt text so a reader with images turned off still sees your name.
Dark mode and mobile
Dark mode is now the default for many people, and email clients handle it inconsistently. Some invert your colours, some leave them alone, and some do something in between. Two habits avoid most problems: don't set a white background colour on the whole signature, and don't use a dark logo on a transparent background, because it vanishes when the background flips to black. A logo with a small white or coloured margin survives both themes.
On mobile, the biggest risk is a wide table that forces the whole email to scroll sideways. The layouts here stay within a phone screen, and the Compact template is the safest if most of your readers are on mobile.
Legal and privacy considerations
In several countries, business email is treated like company letterhead. In the UK, limited companies must show the company name, registration number, place of registration and registered office address. Germany, Austria, Italy and some other EU countries have similar rules, and many organisations add a short confidentiality notice by policy rather than by law.
Confidentiality disclaimers have limited legal weight, but they're common in law, finance and healthcare. If you add one, keep it to a couple of lines in small grey text so it doesn't dominate the signature. Check what your own company or regulator requires; this page is general guidance, not legal advice.
One more point worth knowing: your signature is personal data that gets copied into every reply thread. Don't include a home address or a personal mobile number unless you're comfortable with it travelling widely.
Common email signature mistakes
- Too much information. Five phone numbers, six social icons and a mission statement help nobody.
- The whole signature as an image. Blocked by default in many clients, invisible to screen readers, and impossible to copy a phone number from.
- Broken image links. If the image was hosted on a site you closed, everyone sees a red X. Check yours once a year.
- Inspirational quotes. They date quickly and can clash with the tone of a serious email.
- "Sent from my iPhone" left in place under a full signature, which looks careless.
- Huge tracking pixels or animated GIFs, which trigger spam filters and annoy people.
- Different signatures across a team. If you run a company, generate one for everyone with the same template and colour.
- Never testing it. Send yourself an email and open it on a phone, in Gmail and in Outlook before you rely on it.
Signatures for different situations
Reply signature
Many people use a shorter version for replies, often just their name and phone number. A long signature repeated ten times down a thread makes the conversation hard to read. Most email apps let you set a different signature for replies and forwards.
Freelancers and consultants
Include a website and a booking link. The Card template with a button works well, because it gives prospects an obvious next step without you having to ask.
Job seekers
Name, phone, email and a link to your LinkedIn profile or portfolio. Skip the company line if you're between roles.
Students and academics
Name, course or department, institution, and a contact number. Keep it plain, as most university systems strip heavy formatting.
Small teams
Pick one template and one accent colour, then generate a signature for each person. Consistency across a team looks far more professional than five individual designs.
Why HTML signatures behave differently in email
If you have ever built a web page, email will surprise you. Email clients render HTML with engines that are years behind browsers, and each one strips something different. Gmail removes anything in a style block, desktop Outlook uses Microsoft Word to draw the layout, and several mobile apps ignore CSS classes entirely.
That is why this generator produces old-fashioned tables with styles written directly on each element. It is not nostalgia, it is the only approach that survives everywhere. Modern CSS such as flexbox, grid and rounded corners on containers can silently break, which is why the templates here use spacing and borders that render the same in every client.
It also explains a quirk you may notice: the signature looks slightly different in the preview here than in Outlook. The preview uses your browser, which is more capable than any mail client. If precision matters, send yourself a test email and check it in the apps your recipients actually use, which for most people means Gmail on the web and Gmail or Outlook on a phone.
Keeping your signature up to date
A signature is easy to set once and forget for years. That is how people end up sharing an old job title, a disconnected phone number or a link to a website that closed. A few habits keep it accurate:
- Review it when anything changes: a new role, a new number, a rebrand or a closed social account.
- Check the image once a year. Open one of your old sent emails and see whether the photo still loads. If the host changed, the image is gone.
- Click every link. Broken links in a signature are more common than you would think, especially after a site redesign.
- Trim as you go. Signatures grow. If it has crept past six lines, cut what nobody uses.
- Keep a shorter version for replies, so long email threads stay readable.
Because this tool holds nothing, save the downloaded HTML file somewhere you will find it. Next time you need a change, open the tool, retype the details and generate a fresh one in a minute.
Frequently asked questions
Is this email signature generator online free?
Yes. It is completely free, adds no watermark or branding to your signature, and needs no sign-up. Everything runs in your browser.
How do I add the signature to Gmail?
Click Copy signature, then in Gmail open Settings, See all settings, scroll to Signature, create a new signature and paste with Ctrl+V or Cmd+V. Save changes at the bottom of the page.
Why is my photo or logo not showing?
Images in an email signature must be hosted online at a public URL. Upload the image to your website or an image host first, then paste that direct link into the tool.
What should an email signature include?
Your full name, job title, company, one phone number, your email or website, and optionally one or two social links. Three to six lines is enough for most people.
Will the signature work in Outlook?
Yes. The signature uses table-based HTML with inline styles, which is the format desktop Outlook understands. Paste it into the signature editor or use the HTML file for advanced setups.
Are my details stored anywhere?
No. The signature is built entirely in your browser, so your name, phone number and email address are never sent to a server.
Should I add a legal disclaimer?
Many companies add a short confidentiality or company registration line, and some countries require certain details in business email. Keep it short, and check your own rules.
How big should a signature image be?
Keep a photo around 80 to 120 pixels square and a logo under about 200 pixels wide, saved as PNG or JPG under 50 KB so it loads quickly.
Build your signature now
Two minutes of setup gives you a signature that works on every email you send from now on. Go back to the email signature generator online, fill in your details and paste the result into your email app.