Watermark a PDF
A word across every page, at whatever strength you choose. It is a label rather than a lock — it tells a reader what the document is and makes a leaked copy obvious, but it does not stop anybody doing anything. For that you want a password.
Drawn as real text on top of the existing pages, so nothing underneath is re-rendered or degraded. The document stays on your machine.
Drop a PDF here
Read and rewritten in this tab. The document is never uploaded.
or drop a folder here, or paste an image with Ctrl + V
Nothing is uploaded. The document is read and rewritten by this page, on your own machine.
What a watermark is actually for
It communicates status. DRAFT stops somebody acting on a version that is not final. CONFIDENTIAL tells a recipient what their obligations are before they have read a word. A client's name across a proposal makes it awkward to forward.
None of that is enforcement, and a tool that implies otherwise is selling something. A watermark is drawn on top of the page; anyone can render the pages to images and paint it out, or simply retype the content. What it does do is remove the excuse — nobody can claim they did not know a document was a draft when the word was across every page.
| You want to | Use |
|---|---|
| Label a document's status | A watermark |
| Stop it being read at all | A password |
| Remove information from it | Redaction |
| Discourage casual forwarding | A watermark with the recipient's name in it |
Choosing the strength
The whole difficulty is that a watermark has two jobs which pull against each other: be noticed, and do not get in the way. Around 15% opacity satisfies both on a white page — clearly present, entirely readable through. That is the default.
Push it past about 35% and the document becomes tiring to read, which people respond to by ignoring the document rather than by respecting the label. If a watermark needs to be that loud to be noticed, the answer is usually a bigger word rather than a darker one.
One or many
A single diagonal across the middle is the convention, and conventions are worth following here because a reader recognises the pattern without having to think about it. It is the right choice for DRAFT, CONFIDENTIAL and anything else about the document's status.
Tiling — the same word repeated across the whole page — is for a different worry. If you expect the document to be photographed rather than forwarded, a tiled mark means any crop still carries it. The cost is that it is much more intrusive, so it is a deliberate choice rather than the default.
Sideways pages, again
A PDF page can store its content in one orientation and carry a flag telling readers to turn it. Scans do this constantly. A watermark placed into the stored coordinates ends up rotated ninety degrees relative to the text it is meant to sit across, which looks like a bug because it is one.
The placement here is worked out against the page as displayed, then converted — so the mark lands in the middle of what you see, at the angle you asked for, whichever way the page is stored.
Questions
How do I add a watermark to a PDF?
Drop the document in, type the word you want across it — DRAFT, CONFIDENTIAL, a client name — and set how strongly it shows. It is drawn onto every page as real text and downloaded straight back to you.
Does a watermark stop anyone copying the document?
No, and it is worth being clear about that. A watermark is a label, not a lock: it tells a reader what the document is and makes a screenshot obviously a screenshot. Anyone can remove it by rasterising the pages or by re-typing the content. If you need the file to be genuinely unreadable, encrypt it instead.
How faint should it be?
Faint enough to read through, dark enough to notice. Around 15% is the usual answer and it is the default here. Past roughly 35% it starts competing with the text underneath, which makes the document harder to use without making the label any more effective.
One in the middle or repeated across the page?
One diagonal across the middle is the convention for DRAFT and CONFIDENTIAL, and it is what a reader expects. Tiling suits a document you are worried about being photographed, because a crop of any part of it still carries the mark. It is also considerably more intrusive.
Will it work on scanned or sideways pages?
Yes. A page stored sideways carries a flag saying how it should be turned for display, and the watermark is placed relative to what you would see rather than to how the file happens to store it — so it lands in the middle of the page either way.
Is my document uploaded?
No. The documents people watermark are drafts, contracts before signature, and material going out under NDA — precisely the ones with a reason not to sit on somebody else's server. This is read and rewritten in your browser, and nothing is transmitted.
What BriskFile will not do to you
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Your files never leave your device
Every conversion runs in your browser. Open DevTools, watch the Network tab, and you will see no upload — because there is not one.
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No account, no email, no watermark
Nothing to sign up for and nothing stamped on your images. There is no step between choosing a file and getting it back.
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No limits at the download button
No daily cap, no file counter, no "upgrade to download". If the tool starts a job, it finishes it.
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Checkable, not just claimed
Open the Network tab and convert something — nothing goes out. Or load the page, disconnect, and watch it keep working: the tool is already on your machine, and your file never leaves it.