skills/ mcollina/skills

snipgrapher

Configures and uses snipgrapher to generate polished code snippet images, including syntax-highlighted PNGs, SVGs, and WebP exports with custom themes, profiles, and styling options. Use when the user wants to create code screenshots, turn code into shareable images, generate pretty code snippets fo

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SKILL.md

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When to use

Use this skill when you need to:

  • Generate image snippets from source code
  • Configure reusable snippet rendering defaults
  • Batch-render snippet assets for docs, social posts, or changelogs
  • Use published snipgrapher from npm to generate snippet images

Quick start

Render a single file to a PNG immediately with no config required:

npx snipgrapher render file.ts -o output.png

For ongoing use, initialise a project config first, then render:

npx snipgrapher init          # creates snipgrapher.config.json
npx snipgrapher render file.ts --profile default -o output.png

After rendering, verify the output exists and is non-zero in size before treating the job as successful:

ls -lh output.png   # confirm file exists and size > 0

How to use

Read these rule files in order:

Core principles

  • Configure first: establish a project config before repeated renders
  • Reproducible output: prefer named profiles and explicit output paths
  • Portable commands: use command patterns that work with installed binaries and npx
  • Automation-friendly: rely on CLI flags/config/env precedence intentionally

Troubleshooting common render failures

If a render fails or produces an unexpected output, check for these common causes:

  • Missing fonts: ensure any custom font specified in the profile or config is installed on the system
  • Unsupported syntax: confirm the language/extension is supported by snipgrapher; fall back to plain text highlighting if not
  • Empty or corrupt output: re-run with --verbose (if supported) to surface error details, and verify the input file is readable and non-empty
  • Profile not found: run npx snipgrapher init to regenerate snipgrapher.config.json if the config file is missing or malformed

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