Ref Downloader
ltczding-gif/ref-downloader
A skill your agent uses when the user asks to batch-download academic PDFs with ref-downloader — either ALL references of one paper (Mode A: DOI or PDF input), OR a custom batch of papers (Mode B…
Extracts figures from a research paper, preferring the arXiv source package for original-quality images and falling back to PDF extraction.
Install Paper Image Extractor
$ npx skills add LigphiDonk/Oh-my--paper --skill paper-image-extractor -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install LigphiDonk/Oh-my--paper paper-image-extractor --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/LigphiDonk/Oh-my--paper.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/paper-image-extractor .claude/skills/paper-image-extractor && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "paper-image-extractor" agent skill from https://github.com/LigphiDonk/Oh-my--paper/tree/main/skills/paper-image-extractor into .claude/skills/paper-image-extractor/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "paper-image-extractor", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/LigphiDonk/Oh-my--paper/tree/main/skills/paper-image-extractorType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add LigphiDonk/Oh-my--paper --skill paper-image-extractor -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install LigphiDonk/Oh-my--paper paper-image-extractor --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/LigphiDonk/Oh-my--paper.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/paper-image-extractor .agents/skills/paper-image-extractor && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "paper-image-extractor" agent skill from https://github.com/LigphiDonk/Oh-my--paper/tree/main/skills/paper-image-extractor into .agents/skills/paper-image-extractor/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "paper-image-extractor", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add LigphiDonk/Oh-my--paper --skill paper-image-extractor -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install LigphiDonk/Oh-my--paper paper-image-extractor --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/LigphiDonk/Oh-my--paper.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/paper-image-extractor .cursor/skills/paper-image-extractor && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "paper-image-extractor" agent skill from https://github.com/LigphiDonk/Oh-my--paper/tree/main/skills/paper-image-extractor into .cursor/skills/paper-image-extractor/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "paper-image-extractor", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/LigphiDonk/Oh-my--paper.git --path skills/paper-image-extractor--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add LigphiDonk/Oh-my--paper --skill paper-image-extractor -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install LigphiDonk/Oh-my--paper paper-image-extractor --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/LigphiDonk/Oh-my--paper.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/paper-image-extractor .gemini/skills/paper-image-extractor && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "paper-image-extractor" agent skill from https://github.com/LigphiDonk/Oh-my--paper/tree/main/skills/paper-image-extractor into .gemini/skills/paper-image-extractor/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "paper-image-extractor", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install LigphiDonk/Oh-my--paper paper-image-extractorInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add LigphiDonk/Oh-my--paper --skill paper-image-extractor -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/LigphiDonk/Oh-my--paper.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/paper-image-extractor .github/skills/paper-image-extractor && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "paper-image-extractor" agent skill from https://github.com/LigphiDonk/Oh-my--paper/tree/main/skills/paper-image-extractor into .github/skills/paper-image-extractor/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "paper-image-extractor", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add LigphiDonk/Oh-my--paper --skill paper-image-extractor -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install LigphiDonk/Oh-my--paper paper-image-extractor --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/LigphiDonk/Oh-my--paper.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/paper-image-extractor .opencode/skills/paper-image-extractor && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "paper-image-extractor" agent skill from https://github.com/LigphiDonk/Oh-my--paper/tree/main/skills/paper-image-extractor into .opencode/skills/paper-image-extractor/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "paper-image-extractor", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
paper-image-extractor- GitHub stars
- 738
- Used in
- 1 other repo
- Token cost
- ~810 tokens
- SKILL.md length
- 279 words
- Files
- 2 (incl. scripts)
- Skills in repo
- 27
- Repo updated
- First seen
- Licence
- MIT
At a glance
Extracts figures from a research paper, preferring the arXiv source package for original-quality images and falling back to PDF extraction.
- Works in 4 steps: Download source:… → Extract and look for pics/, figures/,… → Copy image files to output directory → …
- Collecting figures from an arXiv paper for a literature review or slides
- SKILL.md covers Canonical Summary, Trigger Rules, Resource Use Rules and Execution Contract, plus 4 more sections
- Runs Python scripts from its folder; calls python; reaches arxiv.org
What it does
This skill pulls the figures out of a paper using a three-tier strategy. The preferred route downloads the arXiv source package, looks in directories such as pics, figures, fig, images and img, copies the image files and converts PDF figures to PNG. If that fails, scripts/extract_images.py extracts figures from the PDF, and as a last resort embedded image objects are taken from the compiled PDF with PyMuPDF.
Images go to the output directory you specify, together with an index.md that lists each image's metadata and a source label: arxiv-source, pdf-figure or pdf-extraction. The skill needs Python 3.8 or newer, PyMuPDF and requests, plus network access to arXiv. It says to resolve paths from its own folder, to explain any blocker and fall back to manual steps when a dependency is missing, and to save outputs in the project workspace rather than the skill folder.
When your agent uses it
- Collecting figures from an arXiv paper for a literature review or slides
- Getting original-quality images instead of screenshots of a PDF
- Building an indexed set of figures with source labels
Example prompts
- “Extract every figure from the Attention Is All You Need paper into ./figures.”
- “Pull the figures out of this paper's PDF, since the arXiv source is not available.”
- “Make an index.md of the extracted images with their source labels.”
Requirements
- Python 3.8 or newer with PyMuPDF and requests
- Network access to arXiv
Workflow steps
4 steps, taken from the first numbered list in SKILL.md.
- Download source: https://arxiv.org/e-print/[PAPER_ID]
- Extract and look for pics/, figures/, fig/, images/, img/ directories
- Copy image files to output directory
- Convert PDF figures to PNG
What it can do on your machine
Read from SKILL.md and the folder at commit 6baece9. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
Ships 1 file in scripts/ (Python), which the agent can run.
Shell commands in SKILL.md call:
python
From the folder's file list and the shell code blocks in SKILL.md.
Network
Hosts in commands or code, which the agent is likely to contact:
arxiv.org
Also links to:
github.com
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Paper Image Extractor loads about 810 tokens when it runs. Until then it costs about 27 tokens; SKILL.md has 279 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); the scripts in this folder are not scanned.
SKILL.md
The full file from LigphiDonk/Oh-my--paper at commit 6baece9, republished under its MIT licence (© LigphiDonk). 279 words, ~810 tokens.
Download SKILL.mdSave it as
.claude/skills/paper-image-extractor/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.- name
- paper-image-extractor
- description
- Extract figures from papers — prioritizes arXiv source package for high-quality images
- id
- paper-image-extractor
- version
- 1.0.0
- stages
- publication
- tools
- read_file, search_project, write_file, run_terminal
- summary
- Extract figures from papers — prioritizes arXiv source package for high-quality images
- primaryIntent
- research
- intents
- research
- capabilities
- multimodal
- domains
- cs-ai, vision
- keywords
- paper-image-extractor, image extraction, multimodal, cs-ai, vision, paper, image, extractor, extract, figures, from, papers
paper-image-extractor
Canonical Summary
Extract figures from papers — prioritizes arXiv source package for high-quality images
Trigger Rules
Use this skill when the user request matches its research workflow scope. Prefer the bundled resources instead of recreating templates or reference material. Keep outputs traceable to project files, citations, scripts, or upstream evidence.
Resource Use Rules
- Treat
scripts/as optional helpers. Run them only when their dependencies are available, keep outputs in the project workspace, and explain a manual fallback if execution is blocked.
Execution Contract
- Resolve every relative path from this skill directory first.
- Prefer inspection before mutation when invoking bundled scripts.
- If a required runtime, CLI, credential, or API is unavailable, explain the blocker and continue with the best manual fallback instead of silently skipping the step.
- Do not write generated artifacts back into the skill directory; save them inside the active project workspace.
Upstream Instructions
You are the Paper Image Extractor for Dr. Claw.
Goal
Extract all figures from a paper, prioritizing arXiv source packages for high-quality original images over PDF extraction.
Extraction Strategy (3-tier priority)
Priority 1: arXiv Source Package (Best)
- Download source:
https://arxiv.org/e-print/[PAPER_ID] - Extract and look for
pics/,figures/,fig/,images/,img/directories - Copy image files to output directory
- Convert PDF figures to PNG
Priority 2: PDF Figure Extraction (Fallback)
python scripts/extract_images.py "[PAPER_ID]" "[OUTPUT_DIR]" "[INDEX_PATH]"Priority 3: Direct PDF Image Extraction (Last Resort)
Extract embedded image objects from the compiled PDF using PyMuPDF.
Output
- Images saved to specified output directory
index.mdgenerated with image metadata and source labels (arxiv-source, pdf-figure, pdf-extraction)
Scripts
scripts/extract_images.py— Main extraction script with 3-tier strategy
Dependencies
- Python 3.8+, PyMuPDF (fitz), requests
- Network access (arXiv)
Based on evil-read-arxiv — an automated paper reading workflow. MIT License.
© LigphiDonk, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
SKILL.md and 1 other file (scripts) in skills/paper-image-extractor of LigphiDonk/Oh-my--paper.
- SKILL.md
- scripts/extract_images.py
Open the folder on GitHubat commit 6baece9
Used in 1 other repository
We found 2 copies of this SKILL.md (exact, near-identical or edited) in other folders, from 1 other GitHub owner. This page covers the copy in LigphiDonk/Oh-my--paper, which our catalogue first saw on October 7, 2026.
Compare with similar skills
Paper Image Extractor next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Paper Image Extractor this skillLigphiDonk/Oh-my--paper | 738 | 1 repos | ~810 | Automated safety check: Pass | MIT | |
| Ref Downloaderltczding-gif/ref-downloader | 139 | — | ~5.9k | Automated safety check: Pass | MIT | |
| Paper and Web Source Analyzerjuliye2025/evil-read-arxiv | 1.7k | — | ~715 | Automated safety check: Pass | None | |
| Paper Figure Extractorjuliye2025/evil-read-arxiv | 1.7k | — | ~298 | Automated safety check: Pass | None | |
| Papers Skillsickn33/agentic-awesome-skills | 47k | 1 repos | ~2.1k | Automated safety check: Pass | MIT | |
| PDF Processinganthropics/skills | 180k | 48 repos | ~2k | Automated safety check: Pass | Proprietary |
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Related
Categories
Questions about Paper Image Extractor
What does Paper Image Extractor do?
Extracts figures from a research paper, preferring the arXiv source package for original-quality images and falling back to PDF extraction. This skill pulls the figures out of a paper using a three-tier strategy. The preferred route downloads the arXiv source package, looks in directories such as pics, figures, fig, images and img, copies the image files and converts PDF figures to PNG.
When should I use Paper Image Extractor?
Paper Image Extractor fits situations like: collecting figures from an arXiv paper for a literature review or slides; getting original-quality images instead of screenshots of a PDF; building an indexed set of figures with source labels.
How do I install Paper Image Extractor in Claude Code?
Run `npx skills add LigphiDonk/Oh-my--paper --skill paper-image-extractor -a claude-code`. Or copy the skill folder (skills/paper-image-extractor in LigphiDonk/Oh-my--paper) into .claude/skills/paper-image-extractor in your project. Claude Code loads it when a task matches its description.
How do I install Paper Image Extractor in Codex?
Run `npx skills add LigphiDonk/Oh-my--paper --skill paper-image-extractor -a codex`. Or copy the skill folder (skills/paper-image-extractor in LigphiDonk/Oh-my--paper) into .agents/skills/paper-image-extractor in your project. Codex loads it when a task matches its description.
Can I use Paper Image Extractor in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add LigphiDonk/Oh-my--paper --skill paper-image-extractor -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/paper-image-extractor, .gemini/skills/paper-image-extractor, .github/skills/paper-image-extractor and .opencode/skills/paper-image-extractor in your project.
What does Paper Image Extractor need to run?
Going by SKILL.md and its folder, Paper Image Extractor needs Python for the scripts in its folder and the command-line tools its instructions call (python). Our summary lists: Python 3.8 or newer with PyMuPDF and requests; Network access to arXiv.
Does Paper Image Extractor access the network?
SKILL.md names 2 domains. In commands or code: arxiv.org; the agent is likely to contact it when it follows the instructions. As links in the text: github.com. This is read from the text; nothing was executed.
Is Paper Image Extractor safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. The check reads SKILL.md only: the scripts in the folder are not scanned, so read them before running anything.
What licence does Paper Image Extractor use?
Paper Image Extractor is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Paper Image Extractor use?
About 810 tokens (SKILL.md is roughly 3.2k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Paper Image Extractor?
Skills that share tags, products or a category with Paper Image Extractor: Ref Downloader (ltczding-gif/ref-downloader, 139 stars), Paper and Web Source Analyzer (juliye2025/evil-read-arxiv, 1.7k stars), Paper Figure Extractor (juliye2025/evil-read-arxiv, 1.7k stars) and Papers Skill (sickn33/agentic-awesome-skills, 47k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Paper Image Extractor?
LigphiDonk (a GitHub user) maintains it in LigphiDonk/Oh-my--paper, which has 738 GitHub stars. The repository holds 27 skills in this directory. The repository was last updated on April 15, 2026.
Source: LigphiDonk/Oh-my--paper on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.