Add Text Watermark to PDF

Stamp semi-transparent diagonal text stamps like DRAFT or CONFIDENTIAL across PDF pages. 100% free with zero server uploads.

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Select PDF file

or drag & drop PDF here

1. The Complete Guide to PDF Watermarking & Brand Security

Stamping semi-transparent text watermarks across PDF documents protects intellectual property, indicates document status (such as DRAFT or DO NOT COPY), and prevents unauthorized reproduction. The iLikePDF Watermark PDF Tool renders diagonal vector watermarks onto every page.

2. Step-by-Step Instructions

  1. Step 1: Upload PDF File: Click "Select PDF file" or drop your PDF document into the workspace above.
  2. Step 2: Enter Text: Type your watermark text (e.g., CONFIDENTIAL).
  3. Step 3: Stamp & Download: Click "Apply Watermark & Download" to save your watermarked PDF.

3. 100% Client-Side Private Document Processing

Your document privacy is guaranteed. iLikePDF stamps text overlays locally in browser memory using WebAssembly. Zero files travel to external servers.

4. Comparative Feature Analysis

Feature iLikePDF Cloud Server Converters
Data Privacy 100% Local Browser RAM Uploaded to Cloud Storage Disks
Watermark Type Vector Diagonal Semi-Transparent Text Opaque Block Overlays
Cost & Paywall 100% Free Unlimited Use Paid Subscriptions

5. Frequently Asked Questions (FAQ)

Will the watermark block underlying readable text? +

No! The watermark is rendered with opacity transparency so underlying text remains easily readable.