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Install in OpenClaw
/install markdowntable2image
Description
Convert markdown tables and JSON data to PNG images. Perfect for Discord, Telegram, and other platforms where markdown tables render poorly. Use when Claude...
Usage Guidance
This skill appears coherent and implements exactly what it claims: converting tables/JSON to PNGs using Playwright + Chromium. Before installing, note: (1) npm install will pull Playwright from the public registry and npx playwright install chromium will download a ~100MB browser binary — allow network for the first run; (2) the package executes only local file reads/writes and spawns a headless Chromium process (no hidden network endpoints were found), but running third‑party code always carries risk — review the scripts (already included) or run in a sandbox if you don't trust the publisher; (3) when using the programmatic API, be cautious passing untrusted formatter functions or code that could run in your environment. If you need tighter controls, run this on an isolated runner or inspect/lock dependencies before deployment.
Capability Analysis
Type: OpenClaw Skill
Name: markdowntable2image
Version: 1.1.0
The Table2Image skill is a legitimate utility designed to convert Markdown and JSON tables into PNG images using Playwright and Chromium. The codebase, including 'scripts/index.js' and 'scripts/table-cli.mjs', is well-structured and follows its stated purpose without any signs of malicious intent. It uses standard HTML escaping for data rendering and does not exhibit high-risk behaviors such as data exfiltration, unauthorized network calls, or persistence mechanisms.
Capability Tags
Capability Assessment
Purpose & Capability
Name/description (table→image for chat platforms) align with included code (rendering API, CLI, themes) and dependencies (playwright/chromium) — these are expected for pixel-perfect font/emoji rendering.
Instruction Scope
SKILL.md instructs npm install and playwright chromium download and documents CLI and programmatic APIs. Runtime actions (reading JSON files, generating PNGs, reusing a browser) match the stated purpose and do not reference unrelated files, env vars, or external endpoints.
Install Mechanism
No install spec in registry, but SKILL.md and package.json require npm install and npx playwright install chromium (downloads ~100MB). Playwright is fetched from npm (package-lock references official registry). The network download of Chromium is expected but worth noting.
Credentials
The skill requests no environment variables or external credentials. CLI/API read local files (data/theme files) only — proportional to the task.
Persistence & Privilege
No always:true, no modifications to other skills or global agent settings. The skill launches a local headless browser instance and cleans up on exit — behaviour is scoped to its own runtime.
How to Use
- Make sure OpenClaw is installed (local or Docker)
- Run the install command in chat:
/install markdowntable2image - After installation, invoke the skill by name or use
/markdowntable2image - Provide required inputs per the skill's parameter spec and get structured output
Version History
v1.1.0
- Added 5 new built-in table themes: sweet-pink, deep-sea, wisteria, pond-blue, camellia.
- Introduced support for custom theme objects with automatic theme generation based on primary and secondary colors.
- Updated documentation to include previews and details for new and custom themes.
- No breaking changes; previous theme names and API usage remain compatible.
v1.0.3
Improve image sharpness with deviceScaleFactor: 2 - PNG images now render at 2x resolution for sharper text and emoji
v1.0.2
- Added a link to the project's GitHub repository in the documentation.
- Updated theme preview image URLs to use absolute links from the GitHub repository, supporting direct previews even outside the local repo.
v1.0.1
- Added explicit installation instructions and prerequisites, including Node.js version and Playwright/Chromium setup.
- Introduced an "install" section in the manifest for easier setup guidance.
- Specified Node.js engine requirement (>=18.0.0) in the manifest.
- No breaking changes to APIs or core functionality.
v1.0.0
Initial release of Table2Image: Convert markdown tables and JSON data into high-quality PNG images for chat platforms.
- Supports conversion of tables via CLI, programmatic API, or automatic markdown detection.
- Includes multiple visual themes: discord-light, discord-dark, finance, and minimal.
- Features conditional formatting, custom column widths, and built-in emoji/font rendering.
- Designed for improved table presentation on Discord, Telegram, WhatsApp, and more.
- Performance optimized with browser reuse for fast repeated rendering.
Metadata
Frequently Asked Questions
What is Table2Image?
Convert markdown tables and JSON data to PNG images. Perfect for Discord, Telegram, and other platforms where markdown tables render poorly. Use when Claude... It is an AI Agent Skill for Claude Code / OpenClaw, with 185 downloads so far.
How do I install Table2Image?
Run "/install markdowntable2image" in the OpenClaw or Claude Code chat to install it in one step — no extra setup required.
Is Table2Image free?
Yes, Table2Image is completely free, licensed under MIT-0. You can download, install and use it at no cost.
Which platforms does Table2Image support?
Table2Image is cross-platform and runs anywhere OpenClaw / Claude Code is available (cross-platform).
Who created Table2Image?
It is built and maintained by umrjs (@umrzcz-831); the current version is v1.1.0.
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