Add Watermark to PDF Online — No Upload
Stamp text or an image onto every page of a PDF. Files are processed locally in your browser and are not uploaded to a server.
or drop a PDF here
No account needed — watermark as many PDFs as you like, at no cost.
How to add a watermark to a PDF in 3 steps
The whole process runs in your browser — there's no software to install and nothing to upload.
1. Select your PDF
Click "Select PDF File" or drag and drop the document you want to stamp into the tool.
2. Set your watermark
Type the text you want stamped — or upload a logo image — then choose its position, size, and opacity.
3. Download your watermarked PDF
Apply the watermark and download the result. Nothing is sent to a server at any point.
Why people watermark PDFs
A watermark is the simplest way to mark a document as yours without changing its content. People reach for it for a few recurring reasons: protecting a file before it's shared, labeling a document's status, or reinforcing a brand on something that's going out the door.
Common examples: stamping "CONFIDENTIAL" or "DRAFT" across a contract before it's circulated for review, adding a company logo to an invoice or proposal, marking sample work with "SAMPLE" so it can't be mistaken for the final deliverable, or putting a copyright notice on a PDF before it's distributed publicly.
Whatever the reason, the watermark sits visibly on every page, making the document's purpose or ownership obvious at a glance.
What to expect
Text or image watermarks
You can stamp plain text — a word, a name, a short phrase — or upload an image such as a logo. Either type can be placed on every page of the document in one pass.
Position, size, and opacity are yours to set
Place the watermark in the center, diagonally across the page, or in a corner. Adjust its size and opacity so it's visible without overwhelming the original content underneath.
Applies to every page
The watermark is added to all pages of the PDF at once — there's no need to repeat the process page by page.
No file size limits
There's no cap on how large your PDF can be. The practical limit is your device's available memory.
Your files stay on your device
Most online PDF watermarking tools upload your document to a remote server, stamp it there, and return the result. That means your file — and whatever's in it — passes through someone else's infrastructure.
itsmypdf works differently. The watermark is applied entirely in your browser using JavaScript. Your file is read locally, stamped locally, and the output is saved locally. The tool does not upload your file to a server. You could turn off your internet connection after the page loads and the tool would still work.
This matters if you're watermarking anything sensitive: contracts, financial statements, legal documents, or internal drafts. The browser-based model isn't a marketing claim — it's the technical architecture.
Frequently asked questions
Yes. There's no subscription, no account, and no hidden fee. You can watermark as many PDFs as you need, as often as you need, at no cost.
No. Everything runs in your browser. Your file is never transmitted to any server, stored remotely, or accessible to anyone other than you.
Yes. You can upload an image, such as a company logo, instead of text, and place it on every page the same way.
Yes. You can choose the position — center, diagonal, or a corner — along with the size and opacity, before applying it to the document.
Yes. The watermark you set is applied to all pages of the PDF in a single pass — you don't need to repeat the process for each page.
No limit is imposed by the tool. Very large files, such as several hundred megabytes, may be slower depending on your device, but there's no hard cap.
Yes. The tool runs in any modern browser on iOS and Android. Tap the upload area to select a file from your device.
Related tools
Useful when you want to combine, trim, or shrink a PDF before or after watermarking it.
Ready to watermark your PDF?
Select your file and download a watermarked PDF in seconds — free, with no account needed.
Select PDF File