Add Watermark to PDF Free Without Adobe

"Confidential," "Draft," a logo in the corner of every page — watermarking is one of those small tasks that used to justify a whole Acrobat Pro subscription.

FlexFiles PDF Editor does it free, with real customization, directly in the browser.

Why Watermark a File

• Brand protection — a logo or name that confirms where a document came from.
• Confidentiality — marking a file "Confidential" or "Private" before it's shared.
• Workflow status — "Draft" or "Approved" labels that track where a document stands.
• Copyright — a visible mark that discourages unauthorized reuse.

What You Can Customize

• Text or image — type a watermark, or upload a logo or stamp.
• Color, opacity, rotation — subtle or bold, your call.
• Page selection — every page, or just the ones that need it.
• Ready-made stamps — "Approved" and "Confidential" templates if you don't want to build one from scratch.

How to Add One

• Open FlexFiles PDF Editor and upload your file.
• Choose text or image watermark.
• Set the color, size, opacity, and rotation.
• Apply it to all pages, or just the ones you pick.
• Download the result as PDF, PNG, or JPG.

A Few Things Worth Knowing

• Files are processed temporarily, not stored permanently.
• Shared links can carry a password or an expiry date.
• The exported file has no FlexFiles branding added — the watermark you set is the only one.

Conclusion

Watermarking doesn't need paid software behind it. FlexFiles gives you real control — text, image, color, placement — for free, with nothing to install.