STEP BY STEP
The workflow
1
Add the watermark across every page
Open Watermark and place your text (DRAFT, CONFIDENTIAL, your company name) or a logo. Set the opacity and angle so it's clearly visible but doesn't block reading.
2
Or stamp a specific mark or page
If you only need a mark on the cover or a specific stamp rather than a full-page wash, use Stamp to place it precisely.
3
Flatten so the mark can't be removed
Flatten the file so the watermark is baked into the page and a recipient can't simply toggle off a layer.
WHY IT MATTERS
The case for doing this
When you share a draft or a confidential file for review, an unmarked PDF can get forwarded, mistaken for final, or leaked with no trace of where it came from. A DRAFT or CONFIDENTIAL watermark sets expectations at a glance and signals ownership; flattening makes the mark durable so it survives forwarding. The sweet spot is a light, diagonal wash — clearly visible without obscuring the text reviewers need to read. Watermark, Stamp, and Flatten all run in your browser, so the document stays private while you mark it. One honest limit: a watermark labels and deters, but it isn't encryption — it doesn't control who can open the file.
COMMON MISTAKES
What to avoid
Opacity so high it blocks the text
A heavy watermark makes the document hard to read and annoys reviewers. Aim for a light, diagonal wash that's visible but doesn't obscure content.
Skipping the flatten step
A watermark added as a layer or annotation can be removed by the recipient. Flatten so it becomes part of the page.
Treating a watermark as security
A watermark deters and labels; it doesn't encrypt. For real access control, that's a separate measure.
TIPS FOR THE BEST RESULTS
What works
Diagonal, centred, around 30% opacity
That's the readable-but-unmistakable sweet spot for a full-page DRAFT or CONFIDENTIAL wash.
Match the mark to the stage
DRAFT for work-in-progress, CONFIDENTIAL for restricted distribution, your name or logo for ownership — pick the one that sets the right expectation.
RELATED WORKFLOWS
Other jobs people do with pdfcraft ai
How to redact a PDF properly before sending it externally
Permanently remove names, salaries, account numbers, and PII — not 'cover with a black box'.
How to redline a contract that came back from counterparty
Diff V1 vs V2 in 30 seconds. Material changes flagged, cosmetic ones filtered out.
How to remove hidden metadata from a PDF before publishing
Strip author names, software tags, and edit history before a document goes public.
FAQ
Questions about this workflow
Not if you flatten the file — the mark becomes part of the page. An un-flattened layer or annotation, by contrast, can be toggled off.
Try the workflow on a real PDF
Free tools run in your browser. No signup, no watermarks.
Start with step 1