Watermark PDF

Choose your PDF, then either type the watermark text or choose an image such as your logo. Set the size, opacity and angle, press Add watermark and download the stamped PDF. The original file isn't changed, and nothing is uploaded at any point during the process.

Yes. Text is drawn on a canvas first, so any script your device can display works, including Hindi, Marathi, Tamil and others. That makes it easy to stamp 'नमूना' or 'केवल KYC के लिए' on documents meant for Indian recipients. Check the preview before downloading.

Yes. Choose Image and upload a PNG or JPG. A PNG with a transparent background looks best, because only the logo appears, without a white box around it. Lower the opacity so the logo sits behind the content rather than hiding it. Logos work well on brochures.

It's drawn onto each page, but a determined person with PDF editing tools may be able to remove it. Treat a watermark as a clear label and a deterrent, not as security. For sensitive documents, share only what's needed and with people you trust. It still deters casual misuse.

No. Everything runs on your device, so the file is never uploaded. That matters when you're watermarking ID copies or contracts, which are exactly the documents you don't want sitting on someone else's server. Nothing is stored, and there's no account to create, so no copy of your file is kept anywhere.

Stamping a copy of your Aadhaar, PAN or passport with its purpose, such as 'For bank KYC only, 23 Oct', makes it harder to reuse for something else. It's a simple habit that reduces misuse of document copies you send to banks, landlords or employers.

Around 20 to 30 per cent usually keeps the content readable while the watermark stays clearly visible. Use higher opacity for words like DRAFT that must stand out. Check the result at normal zoom, because what looks faint large can look heavy on a phone.

Yes. Set the angle, for example 45 degrees for the classic diagonal watermark across the page. A diagonal stamp is harder to crop out than one in a corner. Horizontal watermarks suit logos and brand names on brochures. Preview it before downloading the stamped file.

Yes, it's applied to the pages of the document so the label is consistent. If you only want it on some pages, split those pages out first, watermark them, then merge the document back together with Merge PDF. All of those tools run in your browser too.

No. The original page content stays as it was, and the watermark is added on top. File size may grow slightly, especially with a large image watermark. If the file becomes too large to email, run it through Compress PDF with the Light level. Text stays selectable.

Yes. The watermark is drawn on top of each scanned page just like on normal pages. This is common for scanned ID cards and certificates. Keep the opacity low enough that the scanned text underneath stays easy to read. Darker scans may need a lighter stamp.

Yes, in modern mobile browsers. Type the text or choose a logo from your gallery, adjust the settings and download. For long documents with image watermarks, a computer is faster, but a few pages are quick on any recent phone. No app or account is needed.

Not directly. Open it with its password, save an unlocked copy, watermark that, then delete the unlocked copy if it's sensitive. The stamped copy can be shared without a password, so think about who will receive it. Add a password again with a PDF editor if you need one.

Keep it short and specific: DRAFT, SAMPLE, CONFIDENTIAL, or the purpose and date for ID copies. Your business name works for brochures. Long sentences are hard to read at an angle and look cluttered on small phone screens. Dates help when stamping ID copies for a specific purpose.

Yes. Watermarking PDFs is free, with no sign-up and no limit. The tool doesn't add any watermark of its own, only yours. It's part of a set of free PDF tools from Marketiism that all run in your browser without uploading files. Business use is fine.