Watermarking is the single cheapest deterrent against leaked fundraising material. The moment an investor knows their email address is going to appear on every page of your model, the temptation to forward it informally evaporates.
CAPLINK watermarks every PDF preview, every image preview, and every file inside a bulk ZIP download. The watermark contains the viewer's email and a server-side timestamp, generated on the fly. There's no admin setup, no per-file flag — it just happens.
Bulk ZIP downloads are watermarked the same way. An investor exports the full room as an archive; every file inside the ZIP carries their identity. If material surfaces somewhere it shouldn't, you know which session served the download.
Combined with the tamper-evident audit trail, watermarking gives you full traceability: who opened what, when, from which IP, and what version of the file they saw. Engagement analytics overlay that with how long they stayed on each page.
Open a CAPLINK data room and watermarking is on from the first preview your first investor opens.