Pdf Watermark Remover
Remove watermarks from PDF files. Use when users request watermark removal, cleaning watermarks, or de-watermarking PDF documents. Supports tiling pattern watermarks (repeated image/text tiles) and semi-transparent text overlay watermarks.
Install
$ agentstack add skill-yuanqi99-manus-skills-pdf-watermark-remover ✓ scanned · ✓ verified, works with Claude Code, Cursor, and more.
Security review
✓ PassedNo issues found. Passed automated security review. · v0.1.0 How review works →
- ✓ Prompt-injection patterns
- ✓ Secret / credential exfiltration
- ✓ Dangerous shell & filesystem operations
- ✓ Untrusted network calls
- ✓ Known-malicious package signatures
What it can access
- ✓ Network access No
- ✓ Filesystem access No
- ✓ Shell / process execution No
- ✓ Environment & secrets No
- ✓ Dynamic code execution No
From automated source analysis of v0.1.0. “Used” means the capability is present in the source — more access means more to trust, not that it’s unsafe.
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Passed review? Show it. Paste this badge into your README, it links to the public security report.
Links to your public security report.[](https://agentstack.voostack.com/security/report/skill-yuanqi99-manus-skills-pdf-watermark-remover) Reliability & compatibility
Declared compatibility
Compatibility is declared by the source manifest. End-to-end runtime verification is coming, see below.
We're building live execution health for every listing: tool-call success rate, median latency, uptime, and last-checked timestamps, measured, not self-reported. It isn't live yet, so we don't show numbers we can't stand behind.
How agent discovery & health will work →About
PDF Watermark Remover
Remove watermarks from PDF files using PyMuPDF. Supports tiling pattern watermarks (most common in enterprise document systems) and semi-transparent text overlays.
Prerequisites
Ensure PyMuPDF is installed:
sudo pip3 install pymupdfUsage
Run the bundled script:
python3 pdf_watermark_remover/cli.py [--mode auto|pattern|text|both]Or if installed via pip:
pdf-watermark-remover [--mode auto|pattern|text|both]Modes
| Mode | Description | |---|---| | auto | Detect watermark type automatically and remove (default) | | pattern | Remove only tiling pattern watermarks (repeated tiles covering pages) | | text | Remove only semi-transparent text watermarks | | both | Force remove both types |
Typical Workflow
- Receive PDF file from user
- Run script with
--mode auto(default) - Verify output by viewing 2-3 pages of the result PDF
- If watermarks remain, retry with
--mode bothor investigate manually - Deliver the cleaned PDF to the user
How It Works
- Pattern watermarks: Detected by
/Pattern CSoperators in content streams. Removed by excisingq...Qgraphics state blocks containing pattern fill operations. - Text watermarks: Detected by ExtGState objects with fill opacity (
/ca) less than 1.0.
Limitations
- Cannot remove watermarks baked into rasterized images (scanned PDFs)
- Cannot remove watermarks embedded as part of the actual page content (same opacity as normal text)
- For encrypted/password-protected PDFs, decryption must be done first
Source & license
This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.
- Author: yuanqi99
- Source: yuanqi99/manus-skills
- License: MIT
Install and usage instructions live in the source repository linked above.
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Versions
- v0.1.0 Imported from the upstream source.