Back to Tools

常见问题 (FAQ)

Are my PDF or image files uploaded to a server?
Absolutely not. Our Watermark generator processes everything directly in your browser using JavaScript (powered by pdf-lib and canvas). Your files remain 100% secure on your device.
Can I add an image logo as a watermark?
Yes! You can choose "Image" as the watermark type and upload a PNG (supports transparent backgrounds) or JPG logo. You can adjust its opacity, scale, rotation, and layout (centered or tiled across the page).
Is there a limit on the number of PDF pages?
Technically, there is no limit. However, since the processing relies on your browser's memory, very large PDF files (hundreds of pages) might take a few seconds to process and consume some RAM.

global.related_tools

Utility

Random Group Generator

Instantly divide a list of names into random teams or groups. Perfect for classrooms, games, and teambuilding.

Text

Fancy Text Generator

Convert normal text into cool, stylish fonts for Instagram, Facebook, and TikTok bios.

Utility

QR Code Generator

Generate high-quality, custom QR codes for URLs, text, and contact info instantly. Free, easy-to-use online QR code maker with no expiration.

Utility

WiFi QR Code

Create a scannable WiFi QR code to share your internet connection instantly. Guests can connect to your network without typing long passwords.

Developer

Token Generator

Generate secure, random strings, passwords, and API tokens instantly. Customize length, uppercase, lowercase, numbers, and special symbols.

Text

Lorem Ipsum Generator

Generate customizable Lorem Ipsum placeholder dummy text for your web designs, mockups, and typography projects instantly.