Show HN: Pencil – Obsidian plugin to write, draw, sync

Description and use

**Brief summary (2‑3 sentences)**
Pencil is an open‑source Obsidian plugin that lets you write, sketch, and sync free‑form notes directly inside your vault. It adds a canvas‑style drawing surface with basic pen tools and automatic syncing to your cloud storage, making it easy to blend text and visuals in a single workflow. The project is actively maintained (last update 2026‑06‑23) but its documentation and community signals are still sparse.

**Value**

• **Unified authoring** – Combine rich text, hand‑drawn diagrams, and annotations without leaving Obsidian, which is valuable for research, brainstorming, or design documentation.
• **Sync‑ready** – Changes are saved to the underlying markdown files and propagated through whatever sync method you already use (e.g., Obsidian Sync, iCloud, Git), eliminating a separate drawing‑app sync layer.
• **Open‑source & extensible** – The code is publicly available, so you can audit security, add custom brushes, or integrate with other plugins.

**Practical adoption path**

1. **Review the repo** – Check the license (MIT/Apache‑style is typical), scan open issues, and confirm recent commits.
2. **Test in a sandbox vault** – Install the plugin from the Obsidian Community Plugins marketplace or via the repo, create a few canvas pages, and verify that drawings are saved as .md files and sync correctly with your chosen backend.
3. **Validate workflow fit** – Ensure the drawing tools meet your team’s needs (e.g., pen thickness, color palette, export options).
4. **Roll out to a pilot team** – Deploy the plugin to a small group, collect feedback on performance and any edge‑case bugs, and formalize a maintenance plan (e.g., periodic version checks).
5. **Scale to production** – Once the pilot is stable, add the plugin to your standard Obsidian configuration and document usage guidelines for the broader organization.

**Production readiness**

• **Maturity:** Medium. The plugin is functional and recently updated, making it suitable for prototypes or internal workflows.
• **Risks:** Limited community activity, few documented use cases, and sparse issue tracking mean you should perform due‑diligence on licensing, long‑term maintenance, and compatibility with future Obsidian releases.
• **Recommendation:** Adopt for internal or low‑risk projects after the sandbox testing and pilot phase; for mission‑critical production systems, monitor upstream activity closely or consider forking to guarantee support.

Use in a workflow

Show HN: Pencil – Obsidian plugin to write, draw, sync may be useful when its README and activity match a concrete workflow.

Limitations and review notes

Medium: useful for prototypes or internal workflows, with dependency and maintenance checks before production.