The PDF you re-send every time a price changes
The default way to share a catalogue is to attach it. That works exactly once. From the second the file leaves your phone it is a copy — and after six months of trading there are a few hundred copies of your catalogue on other people's devices, all frozen at whatever your prices were on the day you sent them.
None of this is a reason to stop making a catalogue PDF. It is a reason to stop sending the PDF itself and start sending an address where the current one lives.
- You get quoted your own old prices, by a customer who is not wrong to.
- A discontinued line keeps getting ordered, because the version in their phone still lists it.
- You have no idea who has looked at it. An attachment is a black hole: sent, and then nothing.
- It clogs the conversation. A 40 MB PDF in a WhatsApp thread is a download prompt, a wait, and a viewer that opens in a different app.
The general case is covered on our PDF-to-link page, and attachment versus link compares the two head to head.