Most document tracking software is a full sales suite: e-signatures, deal rooms, content libraries — priced per user, per month, whether you need those features or not. If what you actually want is to know when your invoice, quote or contract gets opened, there's a much simpler way: tracking that's built into the document itself, the moment it's generated.
One API call (or a Zapier step) turns your data into an invoice, quote or certificate. Every document automatically gets a hosted, trackable link — no extra setup.
Email it, Slack it, drop it in your CRM. The recipient sees a clean, professional document viewer — no login walls, no "powered by" nag screens over your content.
Your dashboard flips to "Opened," the view count ticks up on every revisit, and an optional document.viewed webhook fires so your own tools can react instantly.
| PDFMint | Sales-suite trackers (DocSend, PandaDoc & co.) | |
|---|---|---|
| Pricing model | Per document — from $0 (100 PDFs/mo free) | Per user/month, typically $15–45+ per seat |
| Setup | None — tracking is on by default for every generated PDF | Upload docs to their platform, manage workspaces |
| Automation | REST API + webhook; works from Zapier/Make/your code | Mostly manual sending from their UI |
| Document creation | Built in — generates the PDF and tracks it | Bring documents made elsewhere |
| Best for | Automated invoices, quotes, reports at any volume | Sales teams doing high-touch deal management |
To be fair: if you need e-signatures, granular page-by-page analytics and deal rooms, a dedicated sales suite earns its seat price. But if your documents are generated by software — invoices from your billing flow, quotes from your CRM, certificates from your LMS — paying per seat to track them is the wrong shape. Tracking should be a property of the document, not a subscription for every teammate.
The open event isn't trapped in a dashboard — it's delivered to your systems:
# Generate with a callback URL… curl -X POST https://pdfmintapi.com/v1/generate \ -H "Authorization: Bearer pm_your_key" \ -d '{"template":"invoice","data":{...},"callback_url":"https://your-app.com/hooks/opened"}' # …and the moment it's first opened, you receive: { "event": "document.viewed", "document_id": "8f3c…a91", "filename": "Invoice-0042.pdf", "viewed_at": "2026-07-12T09:14:02Z" }
Ping Slack when a proposal is read. Start the follow-up clock when an invoice is opened. Flag quotes that were viewed three times but never accepted. See the full tracking walkthrough for details.
Tracking is on by default for every PDF you generate. Free tier included.
Get your free API key →