wa.me link not working? The five WhatsApp link mistakes on 24,059 Indian homepages

Dinesh Kamat (an invented example) runs a six-person river cruise and water sports booking office in Panaji. A freelancer built his website in 2022 and put a green button in the corner of every page, linked to wa.me/ followed by Dinesh’s ten digits. For three seasons the wa.me link was not working and nobody at the office knew. Tourists tapped it, WhatsApp opened, and the chat that opened was not with him. The ones who really wanted a boat read the number printed under the button and typed it in.

We found 1,988 Indian homepages with a link like his. That is 9.1% of the 21,759 .in homepages whose WhatsApp link carried a number we could read, or about one link in eleven (21,759 divided by 1,988 is 10.9). It is the largest of the five mistakes we counted and the hardest to notice from inside the business, because the right number sits printed beside the broken button.

Two sentences on method. In August 2026 we read the archived HTML of every .in homepage in Common Crawl’s monthly crawl archive, 113,102 of them, one per registrable domain, and looked for WhatsApp click-to-chat links (wa.me/, api.whatsapp.com/send, web.whatsapp.com/send and whatsapp://send), the code of WhatsApp platform vendors and generic chat widgets, reading every number inside a link in full. The full method and every caveat are in our study of WhatsApp on Indian websites.

Three caveats apply here. We read homepages only, so a broken link on a contact page is not counted, and a correct one there does not rescue a broken homepage button. The counts describe pages as crawled between 7 and 20 August 2026, and a site can have fixed its link since. And a link “on a page” means the code was in the HTML; it says nothing about whether anyone answers the number.

The five mistakes, with counts

The first four are about the number. The fifth is about the address in front of it.

Mistake	Homepages	Counted among	Share
Ten-digit number with no 91	1,988	21,759 pages with a readable number	9.1%
Demo or placeholder number	about 280	24,059 WhatsApp-linking pages, before cleaning	about 1.2%
A domain-parking service’s number	316	.in homepages, before cleaning
A prefix we could not place	110	21,759 pages with a readable number	0.5%
web.whatsapp.com/send as the link	2,106	24,059 WhatsApp-linking pages	8.8%
whatsapp://send as the link	449	24,059 WhatsApp-linking pages	1.9%

The headline figures in our study come after a cleaning step that removes parked pages and placeholder numbers. The second and third rows are counted before that step, because the point here is that those pages exist. “About 280” is the sum of the seven commonest placeholder numbers, listed under mistake 2.

Mistake 1: the number without 91

WhatsApp’s help page on click to chat gives the rule in one line: use https://wa.me/<number> where the number is “a full phone number in international format”, and “omit any zeroes, brackets, or dashes”. Its own don’t-use example carries a plus sign, brackets and a dash. For an Indian mobile that means 91 followed by the ten digits, twelve digits in all, and nothing else.

WhatsApp reads whatever follows wa.me/ as an international number. Ten bare Indian digits are not a shortcut to it; they are some other number, or no number. The link opens WhatsApp. It does not open a chat with you.

Two things let the mistake survive. The number is usually printed beside the button, so customers who hit a dead end type it in and the enquiries keep coming, just never through the link. And nobody at the business taps the button, because everyone there already has the number saved. Dinesh’s freelancer copied the digits from the footer, where they were written as a plain ten-digit mobile number. The footer was right for a human and wrong for a link.

Mistake 2: a number nobody owns

Before cleaning, about 280 .in homepages, 1.2% of the WhatsApp-linking pages, linked a number that cannot belong to a business. These are template leftovers: a theme or plugin ships with a placeholder, the designer means to change it, and does not.

Placeholder in the link	Homepages
91 and ten zeros	123
91 and the digits nine down to one, then zero	55
91 and ten nines	42
91, a nine and nine zeros	17
Ten zeros, no 91	16
The digits one to nine, then zero, no 91	16
91 and the digits one to nine, then zero	10

The fix takes a minute, and the check takes less: tap your own button and read the chat header. If it shows a run of zeros, the page has never sent you a customer.

Mistake 3: the parking company’s number

One US number appeared on 316 .in homepages. Every one of them was a “domain for sale” page: the business let the domain lapse, a parking service took it over, and the page now carries the parking service’s WhatsApp link. The business did not make a link mistake here; it made a renewal mistake. But every visiting card, bill or QR code that still points at the old domain now opens a chat with a stranger who sells domains. We removed these pages in cleaning, so they are not among the 24,059.

Mistake 4: a prefix WhatsApp cannot place

On 110 pages (0.5% of those with a readable number) the number carried a country prefix we could not match to any country. We did not read them one by one, and the likeliest explanations are the dull ones: a 91 typed twice, a digit too many, a trunk zero before the 91. Each is a dead link.

Mistake 5: the wrong address in front of the number

A click-to-chat link comes in four forms, and a page can use more than one.

Link format	WhatsApp-linking .in homepages	Share of 24,059
wa.me/	13,215	54.9%
api.whatsapp.com/send	10,243	42.6%
web.whatsapp.com/send	2,106	8.8%
whatsapp://send	449	1.9%

wa.me is the form WhatsApp’s help page documents. api.whatsapp.com/send is the longer form many plugins and hosted website packages write, and it works on phones and desktops too. The other two are the problem.

web.whatsapp.com is the address of WhatsApp Web, the version that runs in a laptop browser. On a phone, a web.whatsapp.com/send link asks the phone’s browser to load that desktop page rather than handing the visitor to the WhatsApp app. The visitor gets a page built for a laptop, not a chat. 2,106 homepages use it, and a visitor on a phone is exactly the one it fails.

whatsapp://send is not a web address at all. It is an instruction to the device to pass the request to an installed WhatsApp app. Where there is no app, on an office desktop without WhatsApp or in a browser that blocks that kind of link, nothing happens or the browser shows an error, and there is no web page to fall back to. 449 homepages use it.

Replace both with wa.me/ and the full number. Nothing else on the page needs to change.

The correct link, and how to test it on a phone

The link, with a pre-filled first message, looks like this. The number is a placeholder from a block reserved for fiction; yours is 91 and your ten digits.

<a href="https://wa.me/15550100?text=Hi%2C%20I%20want%20to%20book%20a%20sunset%20cruise%20for%20Saturday"
   target="_blank" rel="noopener">
  WhatsApp us
</a>

The part after ?text= is URL-encoded: spaces become %20, commas %2C, apostrophes %27. If you run the free WhatsApp Business app and would rather not type a number at all, the app generates a short link for your account under Tools, then Short link, and lets you set a default message on it. That link is correct by construction, though it shows a code rather than your number. Our guide to adding WhatsApp to a website has the button and the QR code versions.

Testing takes two minutes and is the step most sites skip.

1. Open the live page on a phone that has WhatsApp, not the preview in your site builder. Tap the button.
2. Read the top of the chat that opens. It should show your business name, or your number with +91 and twelve digits. A run of zeros or a number that is not yours means the link is wrong.
3. Send “test” and watch it arrive on the business phone.
4. Check the pre-filled text came through whole. If it stops at the first word, the spaces were not encoded.
5. Repeat from a laptop without WhatsApp installed, and from the browser inside Instagram or Facebook, which handles links its own way.
6. Do it on every page that has a button. Plugins can hold a different number per page.

Can the number be a landline?

Yes, if that landline has a WhatsApp account. The link opens a chat with whatever number is in it and does not care what kind of line sits behind it. A landline can be registered on the WhatsApp Business Platform, with the verification code arriving by voice call, and our phone number options guide lists the forwarding and IVR switches to turn off first. In the link, write the country code, then the STD code without its leading zero, then the number, with no spaces; the help page’s rule about zeros covers that zero. Landlines are rare in our data all the same: of 22,797 Indian numbers we read from links, 22,604 (99.2%) have the ten-digit mobile shape.

The sixth mistake, which nobody notices

Half of WhatsApp-linking homepages pre-fill the visitor’s first message. In our body scan of the raw .in set, 12,268 of 24,714 pages with a WhatsApp link (49.6%) carry a ?text= parameter; the base is the set before cleaning, so it is a little larger than the 24,059 above. One caveat on the parser: it reads the text from the link in the HTML, and where a site left its spaces unencoded it stops at the first one, so short texts such as “Hi” include truncated longer ones. Treat any count of one-to-three-word texts as inflated.

The pre-filled sentence is the one place where a plain link can tell you something. “Hi, I want to book a sunset cruise” is a different enquiry from “Hi, do you take corporate groups”, and both beat “Hi”. Yet on 3,135 pages the pre-filled text is the default sentence in the WhatsApp box of one hosted website package: a greeting, “I found your website”, the site’s own address, and “am interested in your products”. That is about one pre-filling page in four (12,268 divided by 3,135 is 3.9). Every customer of those 3,135 businesses opens with the same words, the address tells the business nothing it did not know, and a dental clinic’s patients announce an interest in its products. On 11 more pages the text is “thanks for contacting us”, a business-side greeting pasted into the customer’s box.

The fix is a sentence per page, written as the customer would say it, naming the page: “Hi, I’m looking at the kayaking page and want weekend prices.” Our article on pre-filled message examples from real websites has the counts of what sites write today and rewritten examples by trade.

What to do this week

Open your own site on a phone and tap every WhatsApp button on it. Read the chat header. If the number is not yours with +91 in front, fix the link before anything else on this list. Then search the page source for web.whatsapp.com and whatsapp:// and replace both with wa.me/. Then change the default sentence. Click to chat, pre-filled message and the other terms used here are in our glossary.

Dinesh fixed his link in the off season. The button now brings enquiries he can count, with “sunset cruise” or “kayak” in the first line, and the printed number under it gets fewer calls. He is an invented example. The 1,988 homepages are not.