Revoza blog

WhatsApp Button on Your Site: A Simple Guide for Businesses

Learn how to add a WhatsApp button to your site, prepare a preset message, choose the right placement, and verify it works on mobile and desktop.

  • Revoza team
  • Oct 13, 2026
  • 4-minute read
  • Written and edited with AI tools

A WhatsApp button lets site visitors start a chat without hunting for a phone number or copying it. When the button is clear and the initial message is pre‑filled, the next step is obvious. In this guide you’ll learn how to create the link, place the button, and verify that it works smoothly.

What is a WhatsApp button and why does it matter?

A WhatsApp button is a link that opens a chat with the business. You can also add a pre-filled message to the link. Visitors simply tap, edit the message if needed, and send it.

The button shortens the path from interest to conversation. It’s especially useful when customers want a quick answer, to schedule a time, or to check availability. It also clarifies what visitors can do on the site, instead of leaving them with only contact details.

It's important to give the button a clear goal. Decide which action you want to encourage: booking an appointment, reserving a spot, inquiring about a service, or a general question. A single goal helps you craft a more precise button.

For example, a hair salon can display a button labeled "Book an appointment on WhatsApp". Visitors immediately understand what will happen when they tap it.

Tip: Choose one primary action for the button and phrase it in simple words.

How to create a link with a preset message?

The link must include the phone number in the proper format. If you add text, it will appear automatically in the message field. Customers can still edit it before sending.

Here's how to create a direct link:

  1. Write the phone number in international format.
  2. Remove the leading zero from the local number.
  3. Remove hyphens, spaces, and unnecessary characters.
  4. Add a short message that fits the button’s purpose.
  5. Create the link using a suitable link‑building tool.
  6. Copy the link and add it to the button on the site.
  7. Open it yourself and verify the number and the message.

For example, a restaurant can prepare a message like: "Hi, I'd like to check if a table is available. The requested date and time are:". That way customers only need to fill in the missing details.

Don't overload the pre-filled message. Its purpose is to start the conversation, not to collect every possible detail right away.

Tip: Send the message to yourself and verify that your language, punctuation, and spacing display correctly.

What should you write on the button and in the message?

The button label should explain what happens on click. Generic phrases like "Click here" don't tell visitors what to expect. It's better to use a verb and the immediate result of the action.

Call to action can be:

  • Send us a message
  • Schedule an appointment on WhatsApp
  • Check availability
  • Ask about the service
  • Reserve a spot

The pre-filled message should also sound natural. Write it in the first person, as if the customer wrote it. Leave room for one or two details, such as the service type, preferred time, or number of participants.

For example, a professional can use a message like: "Hi, I'm interested in getting details about the service for:". The wording gives a clear start while letting the client briefly explain what they need.

Avoid a long message that asks for many details. An overloaded request can turn the start of a conversation into a chore. Save the extra questions for later in the chat.

Tip: Read the message aloud. If it doesn't sound like something a customer would write, simplify it.

Where to place the button on the site?

The right placement depends on the page layout and the stage at which visitors are ready to get in touch. The button should be visible but not obscure content or disrupt reading.

You can integrate it:

  • In the upper area of the page, near the main business description.
  • After an important service description.
  • Include useful details like business hours.
  • At the bottom of the page, after visitors have received the necessary information.
  • As a fixed button on the side of the screen, mainly in mobile view.

Maintain consistent appearance. If the button appears in multiple places, use the same color, style, and wording. That way visitors recognize it as the same action.

For example, a beautician can place a button after the treatment list and another at the bottom of the page. There's no need to put a button after every paragraph.

Make sure the button isn't too close to other buttons. On a small screen, adequate spacing makes tapping easier and reduces mistakes.

Tip: Browse the page on a phone and ask yourself whether you can find the button without hunting for it.

How do you test the button and avoid mistakes?

Before relying on the button, you need to run a practical test. Don't assume it works just because it looks fine on the site.

Follow these steps:

  1. Tap the button from your phone.
  2. Click it from your computer too.
  3. Make sure the chat opens with the correct number.
  4. Check that the prepared message is complete and readable.
  5. Edit the message and send it as a test.
  6. Review every place where the button appears.
  7. Check that it does not hide text, a menu, or a form field.

Common mistakes include a phone number in the wrong format, an overly long message, a button that appears only at the bottom of the page, and copy that doesn’t explain what happens when clicked. Another mistake is relying solely on WhatsApp. It’s a good idea to keep an alternative, concise contact method on the site, such as a contact form.

For example, a clinic can test the button after changing the phone number on the site and discover that an old link still points to the previous number.

Tip: Add the button test to your regular checklist after every site change.

Now choose the button’s purpose, prepare a short message, and test the link on every device. If you already have a site, you can start with a free site audit; and if you’re considering a new site, you can check out our packages..