How to Send a PDF Automatically on Instagram When Someone Comments
You can send a PDF automatically on Instagram when someone comments by attaching the file to a keyword automation. A viewer comments "CHECKLIST", the automation matches the word, and the PDF arrives in their DMs in about a second. Viralyze goes one step further: if you write a long message instead of uploading a file, it is converted into a downloadable PDF automatically, with open tracking so you know who read it.
This guide covers what kind of PDF works, whether to collect an email first, and how to read the results.
What kind of PDF should you send?
Something short that solves one problem. A one-page checklist, a five-recipe mini book, a pricing sheet or a worksheet tends to get opened; a sixty-page ebook often does not.
A nutrition coach, for instance, could offer a "7-day vegetarian protein plan" as a four-page PDF behind the keyword "PROTEIN". The reward is specific, the keyword is obvious, and the file is small enough to read on a phone.
How do you set up the PDF DM?
Here is the process in Viralyze:
1. Create an automation and choose the post or reel. 2. Add keywords: "PROTEIN", "protein plan", "plan bhejo". 3. In the DM step, either upload your PDF or paste the full text of your guide. Long text becomes a PDF automatically. 4. Decide whether to turn on the follow-gate or ask for an email first. 5. Test with a sample comment, then switch it Live.
No flow builder is involved and no Facebook Page is needed.
Should you ask for an email before sending the PDF?
It depends on what you want the PDF to do. If the goal is reach and goodwill, send it with no gate so the most people possible get it.
If the goal is a mailing list, send a lead magnet instead. The DM carries a short page that collects the email, then delivers the file. Each email is saved to your contacts with the post it came from as the source tag, and you can export the list to CSV any time.
Can you tell who actually opened the PDF?
Yes. PDFs sent through Viralyze carry open tracking, so the automation funnel shows you not just how many were delivered but how many were opened.
That number is useful. If delivery is high but opens are low, the DM text is not giving people a reason to tap. If opens are high but nothing happens after, the PDF itself needs a clearer next step on its last page, such as a booking link or a product.
Does Instagram allow sending files by automated DM?
Yes, through the official Instagram API, which is what Viralyze uses as a Meta Tech Provider. The rules are the same as for any private reply: one reply per comment, within 7 days, from a Business or Creator account. You log in on Meta's screen, your password is never shared, and nothing is posted to your feed.
What should the DM text say alongside the PDF?
Keep it to two lines. Name the file, say what it helps with, and tell them to tap. "Here is your 7-day protein plan. Start with day one tomorrow morning." is enough.
The AI variations feature rewords this slightly for each person, so the hundredth recipient does not see the same sentence the first one did.
Frequently asked questions
**Is there a size limit on the PDF?** Keep it small enough to open quickly on a phone. Short, focused files get read; huge files get saved for later and forgotten.
**Can I send the same PDF from a story?** Yes. Set the trigger to story replies, ask viewers to reply with the keyword, and the same PDF goes out.
**Can I swap the PDF later without rebuilding the automation?** Yes. Edit the automation, replace the file or text, and the next matching comment receives the new version.
Start your 7-day free trial of Viralyze, no card needed, and put your first guide behind a single keyword.