Add Watermark to PDF or Photo
Mark a copy of your ID, certificate or document with the purpose it is meant for, or stamp your logo on a photo. Choose the text, colour, opacity, angle and placement, see the result instantly, and save it without uploading anything.
Watermark only documents that are yours or that you have permission to mark.
Why watermark a copy before you send it
Banks, landlords, SIM sellers and job portals often ask for a photo or scan of an identity or address proof. Once you send it, the copy can travel further than you intended. A watermark that states the purpose, such as “Copy for XYZ Bank KYC only”, makes it obvious when the same copy is used somewhere else.
The same tool works for draft documents, confidential reports and photos you publish online. Text watermarks work in any language your device can display, and a logo or stamp image works as well when you want a branded look.
Watermarking a copy of an ID or certificate
Write the purpose, the receiver and, if you like, the date, for example “Copy for ABC Bank KYC, 9 Oct 2026”. Choose Repeat so the mark covers the whole page and cannot simply be cropped away, keep the opacity around 30–40% so every detail underneath stays readable, and make sure the mark does not hide the number or face the receiver needs to check.
Send only what is needed. Where an official service offers a masked or limited version of a document, prefer it. A watermark is an extra layer of care, not a replacement for sharing less.
Choosing opacity, size and angle
Opacity decides how strongly the mark shows. Low values around 15–25% suit a large centred word like DRAFT on a long document. Higher values around 40–60% suit a small corner stamp on a photo. Size controls how wide the watermark is compared with the page, and the angle tilts it; a slight diagonal of 25–35 degrees is easy to read and harder to overlook than a straight line.
The preview uses the first page or photo with the same layout the saved file will have, so you can adjust until the result looks right.
What a watermark can and cannot do
A watermark discourages reuse and shows where a copy came from. It does not stop someone with editing software from covering or removing it, so it is not a security feature. For a PDF that must stay private, share it only with people who need it. In a PDF, the original text and pictures stay exactly as they were and remain selectable, because the watermark is added on top of each page.
Suggested settings
| Use | Placement | Opacity | Size |
|---|---|---|---|
| ID or address-proof copy | Repeat | 30–40% | Medium |
| Draft or confidential report | Centre | 15–25% | Large |
| Photo you publish online | Corner | 40–60% | Small |
| Certificate copy for an employer | Repeat | 25–35% | Medium |
Starting points only; use the preview to judge what suits your document.
How to use it
- Choose a PDF or one or more photos (JPG, PNG, WebP or HEIC).
- Type the watermark text, or switch to Logo or stamp and choose an image.
- Pick Repeat, Centre or Corner, then adjust size, opacity and angle while checking the preview.
- Press Add watermark and download the file, or all files as a ZIP.
Tips for clear watermarks
- Name the purpose and the receiver in the text, so a reused copy is easy to spot.
- Keep opacity low enough that the document underneath stays easy to read.
- Use a dark red or grey colour on light pages and white on dark photos.
- Use a PNG logo with a transparent background so no white box appears around it.
Frequently asked questions
How do I add a watermark to a PDF?
Choose the PDF, type your text or add a logo, pick the placement and press Add watermark. Every page is stamped and you download a new PDF.
Can I watermark photos as well?
Yes. JPG, PNG, WebP and iPhone HEIC photos are accepted. HEIC photos are saved as JPG.
Will the text in my PDF stay selectable?
Yes. The original page content is not changed. The watermark is placed on top of each page.
Can someone remove the watermark?
A person with PDF or photo editing skills may be able to cover or remove it. Treat it as a deterrent and share only what is necessary.
Does it work with Hindi or other Indian languages?
The text is drawn using the fonts on your device, so it works for languages your device can display. Check the preview to confirm the letters look right.
Can I watermark a password-protected PDF?
No. Remove the password in your PDF viewer first, save a copy and add that file.
How many files can I do at once?
Up to 20 files, with PDFs up to 50MB each. Several results download together as a ZIP.
Are my files uploaded?
No. PDFs and photos are processed in your browser on your device and never sent to KbSnap or anyone else.
Related tools
Combine PDFs and photos into one file.
Compress PDF →Make the watermarked file smaller.
Add Page Numbers →Number the pages of a PDF.
Photo & Signature Joiner →Combine photo and signature into one JPG.
Helpful guides
- How to Compress a PDF for an Online Application — Why certificate PDFs are too large, how to get them under 100KB, 200KB or 500KB, and how to keep the text readable when a portal has a strict limit.
- How to Scan Documents With Your Phone for Government Forms — Get clean, readable, small scans of certificates, ID cards and marksheets using only your phone — lighting, framing, cropping and file-size tips.