What's the difference between Personal and Studio?

Personal ($39) is for one person — unlimited use on one active device at a time. Activate on a new device and the old one signs out. Studio ($199) is for teams and commercial client work — unlimited team members, early access to new tools, and a commercial license.

Do I need an account?

No. Use any tool free up to 5 times per day on compute-heavier tools, and unlimited on lightweight ones. No card, no account, no signup required.

Where are my files processed?

Right on your device. Files never upload to any server. Everything runs in your browser — you can verify in DevTools → Network.

What happens if I use my Personal license on a second device?

The new device activates and the old device signs out. Your license key stays the same — you just move it between devices as needed. No limit on how often you switch.

Does this work on my phone?

Yes. Every tool works on iPhone, Android, tablet, and desktop.

What if I want a refund?

30-day money-back guarantee on both tiers. No questions asked. Email sales@cipherforces.com.

Will you add more tools?

Yes. New tools ship regularly. Your license includes every tool we ever release — Studio members get early access.

PdfBy Daniel BeglaryanUpdated August 2026

Watermark PDF

Add text or image watermarks to every page.

PrivateWorks OfflineNo Account

Drop your PDF(s) here

paste works too — Ctrl+V / ⌘V

PDF

Max 100MB

Upload a PDF

Add text or image watermarks to your PDF pages.

Deep dive

About Watermark PDF.

Add a Watermark to Every Page of a PDF

Drop a PDF, add a text or image watermark (e.g. "DRAFT", your logo, a copyright notice), and CipherForces stamps every page. Control font, color, opacity, rotation, and single or tiled placement. Everything runs in your browser.

Common Use Cases

Document drafts: Stamp "DRAFT — DO NOT DISTRIBUTE" before sharing work in progress.
Copyright protection: Add your photography or design portfolio copyright line to every page.
Branding: Add your company logo subtly to client deliverables.
Confidentiality: Stamp "CONFIDENTIAL" on legal or financial documents before transmission.

Key Features

Text and image watermarks: Single-line text or drop a PNG logo.
Single or tiled placement: One centered stamp, or a repeating tiled pattern with an adjustable gap.
Opacity + rotation: Subtle 15% opacity diagonal stamp, or a bolder 50% horizontal one.
Page scope: Stamp every page, or just the first page — ideal for cover sheets.

Privacy: All watermarking is local. No upload.

FAQ

Frequently asked questions.

How do I add a watermark to a PDF?

Open the Watermark PDF tool and load your file. Type your watermark text or upload an image, then set its opacity, rotation, and single or tiled placement. Click apply to stamp every page, preview the result, and download the watermarked PDF. No signup or installation is needed.

Is my PDF uploaded to a server when I add a watermark?

No. This tool runs entirely in your browser using JavaScript, so your PDF is processed on your own device and never leaves it. Nothing is sent to a server, stored, or seen by anyone else, which keeps confidential contracts and drafts private while you work.

Can I use an image or logo as a PDF watermark?

Yes. You can apply either text or an image watermark. Upload a logo or graphic, adjust its size, transparency, and placement, and it will be added to every page. This works well for branding documents or marking files as confidential or draft.

Does adding a watermark to a PDF cost anything?

No, the Watermark PDF tool is completely free with no account required. There are no trial limits, watermarks added by the service, or paywalls. Because everything happens in your browser, you can watermark as many PDF files as you want without paying or signing up.

Three steps