wa.me links explained: click to chat on WhatsApp, with a generator

wa.me is WhatsApp's official click-to-chat shortener. Open a link like https://wa.me/14155550132 and WhatsApp starts a chat with that number — on a phone or on WhatsApp Web — without anyone having to save the contact first. It is the simplest way to turn a phone number into a chat button for a website, a bio link, an ad or a QR code.

The rules are short: full international number, digits only, and ?text= if you want the message prefilled. Everything else in this page is detail, edge cases, and the generator below.

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The format

https://wa.me/<number in international format>

Country code + area code + number, joined together, with no +, no spaces, no parentheses, no dashes and no dots.

Prefilling a message

Append ?text= with the message URL-encoded. Spaces become %20, and punctuation gets encoded too:

https://wa.me/14155550132?text=Hi%2C%20I%27d%20like%20to%20know%20more%20about%20the%20API

That opens the chat with "Hi, I'd like to know more about the API" already typed. Most tools encode the text for you; if you are assembling the URL by hand, run it through a URL-encode function or the message will break at the first space.

wa.me vs api.whatsapp.com/send

You will see two shapes of link that do exactly the same thing:

Both open the chat and both accept the text parameter. Prefer wa.me — it is shorter, easier to say out loud, and a shorter URL makes a less dense QR code, which scans more reliably from print.

Two variants worth knowing

• wa.me/message/<code> — builds the link from a short link configured inside WhatsApp Business. Useful when you would rather not expose the phone number directly in the URL.
• wa.me/c/<number> — opens that number's WhatsApp Business catalog, when products are registered on it.

Mistakes that silently break the link

• Leaving the + or formatting in. https://wa.me/+1 415 555-0132 does not work. Digits only: 14155550132.
• Dropping the country code. Without the 1, WhatsApp cannot tell which country the number belongs to.
• Dropping the area code. The number needs it, even locally.
• Unencoded text. A message with spaces or punctuation that was not URL-encoded gets truncated at the first space.
• A number with no WhatsApp account. The link only works if that number is actually on WhatsApp.

Where the link stops

A wa.me link is built for one person starting one conversation by hand. That is its ceiling, and it is a hard one: it never sends anything on its own. The user always presses send.

If what you need is to send messages, notifications, order confirmations, media or interactive buttons automatically and at scale, that is an API job, not a link job. A WhatsApp API lets you:

• Send text, images, documents and buttons over HTTP;
• Receive incoming messages in real time through a webhook;
• Automate support, billing reminders and confirmations;
• Work from an SDK in Node.js/TypeScript or PHP.

The endpoint reference is the fastest way to see what that looks like in practice — one curl and a message goes out.