Watermarks delivered PDFs with the buyer’s name and order number so leaks are traceable.
When ambikly_order_paid fires, the add-on finds every product file on the order whose URL resolves to a local PDF and writes a stamped copy into uploads/ambikly-pro/stamped under a random 64-character name, caching the order-and-file to stamped-URL mapping in a transient for seven days. The ambikly_download_file_url filter swaps the customer's download link for that copy, re-stamping on demand if the cache has expired, so the plain original is not served. With setasign FPDI via TCPDF installed, every page receives the watermark at the configured opacity and font size; otherwise a dependency-free fallback appends the note to a copy. Stamped files older than seven days are pruned.
Talks to: setasign/FPDI via TCPDF (optional)
Built on the same Addon SDK as every other Pro add-on — extend it instead of replacing it.
ambikly_order_paidambikly_download_file_urlAn independent publisher sells PDF guides. Each paid order gets a copy stamped with the buyer's name and order number, so a file that turns up on a sharing site can be traced back to the order and the customer contacted about it.
A store selling patterns or scores licenses a single buyer per copy. The visible footer on every page acts as a reminder of that license and discourages casual forwarding, without blocking the legitimate printing the buyer paid for.
A consultancy sells workbooks to companies. Stamping the purchaser's name and order id on each page makes it clear which client a copy belongs to, which is useful when the same material is licensed to several organizations at once.
Ambikly → Add-ons → PDF Stamping → toggle on. Pro must be active; nothing else to install.
Open its settings panel and set: watermark template with {customer_name} and {order_id}; position (footer, header or both); opacity from 1 to 100 (default 35); font size in points (default 10).
The storefront surfaces, admin screens and settings it adds are listed under “Where it shows up” above; nothing needs placing by hand unless a shortcode is named there.
Disable the add-on from the same screen. Its settings and data stay in place, and a lapsed license pauses it the same way — the store keeps running.
Expiring, tokenized download links with per-customer limits ship free. Add buyer-stamped PDFs and per-file analytics with Pro, and sell files alongside physical goods and subscriptions in one checkout.
No. If the setasign FPDI class for TCPDF is autoloadable, each page is imported and the watermark drawn on it at your opacity and font size. Without it the add-on copies the file and appends a watermark comment, which keeps the file valid but is not visible on the page.
No. The source file is only read. A stamped copy is written to uploads/ambikly-pro/stamped with a random file name, and the download filter points the customer at that copy. Deleting stamped copies never affects your master file.
No. Every stamp operation triggers a prune at most once a day that deletes stamped files older than seven days, matching the transient cache lifetime. If a customer downloads later, a fresh copy is stamped and cached for another seven days.
The first and last name from the order's billing address. If the billing address has no name, the customer's email is used, and 'Customer' as a last resort. The order id comes from the same order, so the default template reads 'Licensed to Jane Doe • Order #1234'.
Per-file download metrics: counts, unique customers, timestamps.
DigitalActivation/deactivation API, per-site enforcement, and auto-updates for the digital products you sell.
DigitalWin back customers who left items in their cart with a sequence of automated emails.
MarketingPro is $199 a year or $549 once, for all 35 add-ons. Enable this one from the same admin the day you need it.