Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add yuanqi99/manus-skills --skill pdf-watermark-removergit clone --depth 1 https://github.com/yuanqi99/manus-skillsWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/yuanqi99/manus-skills/pdf-watermark-remover)<a href="https://agentmods.dev/skills/yuanqi99/manus-skills/pdf-watermark-remover"><img src="https://agentmods.dev/badge/skills/yuanqi99/manus-skills/pdf-watermark-remover/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/yuanqi99/manus-skills/pdf-watermark-remover"><img src="https://agentmods.dev/badge/skills/yuanqi99/manus-skills/pdf-watermark-remover.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00053 | $0.00462 |
| Opus 5 | $0.00026 | $0.00231 |
| Sonnet 5 | $0.00011 | $0.00092 |
| Haiku 4.5 | $0.00005 | $0.00046 |
Grade B, and why
pdf-watermark-remover scanned grade B with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 12d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Asks for rootmediumPrivilege escalation
A mod that escalates privileges can change anything on the machine, not only the project.
sudo pip3 install pymupdf What it actually says
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 pymupdf
Usage
Run the bundled script:
python3 pdf_watermark_remover/cli.py <input.pdf> <output.pdf> [--mode auto|pattern|text|both]
Or if installed via pip:
pdf-watermark-remover <input.pdf> <output.pdf> [--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
What ships with it
6 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 12d ago First seen · 59 lines · 53 tokens per session scan B 85d7edc179a1
pdf-watermark-remover is a skill published in the GitHub repository yuanqi99/manus-skills (16 stars, last pushed 7mo ago), licensed MIT. It adds 53 tokens to every session and 462 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it B with 1 finding (asks for root). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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