--- title: "localGPT vs book-to-skill" type: "comparison" canonical_url: "https://www.graphcanon.com/compare/promtengineer-localgpt-vs-virgiliojr94-book-to-skill" tools: ["promtengineer-localgpt", "virgiliojr94-book-to-skill"] --- # localGPT vs book-to-skill *GraphCanon updated Sep 20, 2026* ## Verdict Pick localGPT if localGPT allows users to chat with local documents using GPT models completely privately without internet access; pick book-to-skill if book-to-skill is a Python-based tool that converts technical book PDFs into Claude Code skills, facilitating effective study and reference. [localGPT](https://github.com/PromtEngineer/localGPT) reports 22k GitHub stars, 2.5k forks, and 22 open issues, last pushed Aug 26, 2026. [book-to-skill](https://github.com/virgiliojr94/book-to-skill) has 31k stars, 3.2k forks, and 16 open issues, last pushed Sep 17, 2026. Figures are from public GitHub metadata via [localGPT's repository](https://github.com/PromtEngineer/localGPT) and [book-to-skill's repository](https://github.com/virgiliojr94/book-to-skill). | | [localGPT](/tools/promtengineer-localgpt.md) | [book-to-skill](/tools/virgiliojr94-book-to-skill.md) | | --- | --- | --- | | Tagline | Chat with your documents locally using GPT models | Converts technical book PDFs into Claude Code skills for study and reference | | Stars | 22,202 | 31,078 | | Forks | 2,461 | 3,224 | | Open issues | 22 | 16 | | Language | Python | Python | | Adopt for | localGPT allows users to chat with local documents using GPT models completely privately without internet access. | book-to-skill is a Python-based tool that converts technical book PDFs into Claude Code skills, facilitating effective study and reference. | | Persona | - | - | | Runtime | - | - | | License | MIT | MIT license applies to the converter code and skill definition in the repository, but not to any book or document processed with it. | | Categories | Data & Retrieval, Inference & Serving | AI Agents, Data & Retrieval, Developer Tools | ## Trust and health _Sourced signals - not a safety guarantee. No winner column._ | | [localGPT](/tools/promtengineer-localgpt.md) | [book-to-skill](/tools/virgiliojr94-book-to-skill.md) | | --- | --- | --- | | Maintenance | Active (82%) | Very active (96%) | | Days since push | 13d | 0d | | Open issues (now) | 22 | 16 | | Stars delta | -7 (30d) | Unknown | | Open issues delta | -2 (30d) | Unknown | | Full report | [trust report](/tools/promtengineer-localgpt/trust.md) | [trust report](/tools/virgiliojr94-book-to-skill/trust.md) | ## Decision facts: localGPT - **Requirements:** Min 4 GB RAM; Requires Docker; Installation is currently tested only on macOS, though instructions for other operating systems are partially provided. - **Adopt for:** localGPT allows users to chat with local documents using GPT models completely privately without internet access. ## Decision facts: book-to-skill - **Pricing:** freemium - The tool is free to use under the MIT license, but any books or documents processed with it are subject to their own licensing. - **Requirements:** Min 2 GB RAM; Requires Python environment to run the tool. - **Adopt for:** book-to-skill is a Python-based tool that converts technical book PDFs into Claude Code skills, facilitating effective study and reference. - **License detail:** MIT license applies to the converter code and skill definition in the repository, but not to any book or document processed with it. ## Choose when ### Choose localGPT if… - Requirements: Min 4 GB RAM; Requires Docker; Installation is currently tested only on macOS, though instructions for other operating systems are partially provided.. - Tags unique to localGPT: docker-support, document-chat, gpt models, local-inference. - Also covers Inference & Serving. - localGPT ships Docker support for self-hosted deployment. - When absolute privacy is required since no data leaves the user's local device. ### Choose book-to-skill if… - Pricing: The tool is free to use under the MIT license, but any books or documents processed with it are subject to their own licensing.. - Requirements: Min 2 GB RAM; Requires Python environment to run the tool.. - Tags unique to book-to-skill: agent-skills, ai-agents, book-to-skill, context-engineering. - Also covers AI Agents, Developer Tools. - When you need to convert technical book PDFs into a format that can be easily studied and referenced using Claude Code skills. ## When NOT to use localGPT - If you need to work across multiple devices seamlessly because localGPT requires installation on each device and does not synchronize state online. - In scenarios requiring frequent updates or model tuning from a cloud service; localGPT relies solely on locally available models which do not auto-update. ## When NOT to use book-to-skill - If your goal is to convert non-technical books or documents that do not require the specific format of Claude Code skills. - When you are looking for a tool that processes and converts documents into formats other than those compatible with Claude Code. ## Common questions ### What is the difference between localGPT and book-to-skill? localGPT: Chat with your documents locally using GPT models. book-to-skill: Converts technical book PDFs into Claude Code skills for study and reference. See the comparison table for live GitHub stats and shared categories. ### When should I choose localGPT over book-to-skill? Choose localGPT over book-to-skill when Requirements: Min 4 GB RAM; Requires Docker; Installation is currently tested only on macOS, though instructions for other operating systems are partially provided.; Tags unique to localGPT: docker-support, document-chat, gpt models, local-inference; Also covers Inference & Serving; localGPT ships Docker support for self-hosted deployment; When absolute privacy is required since no data leaves the user's local device. ### When should I choose book-to-skill over localGPT? Choose book-to-skill over localGPT when Pricing: The tool is free to use under the MIT license, but any books or documents processed with it are subject to their own licensing.; Requirements: Min 2 GB RAM; Requires Python environment to run the tool.; Tags unique to book-to-skill: agent-skills, ai-agents, book-to-skill, context-engineering; Also covers AI Agents, Developer Tools; When you need to convert technical book PDFs into a format that can be easily studied and referenced using Claude Code skills. ### When should I avoid localGPT? If you need to work across multiple devices seamlessly because localGPT requires installation on each device and does not synchronize state online. In scenarios requiring frequent updates or model tuning from a cloud service; localGPT relies solely on locally available models which do not auto-update. ### When should I avoid book-to-skill? If your goal is to convert non-technical books or documents that do not require the specific format of Claude Code skills. When you are looking for a tool that processes and converts documents into formats other than those compatible with Claude Code. ### Is localGPT or book-to-skill more popular on GitHub? book-to-skill has more GitHub stars (31,078 vs 22,202). Stars measure visibility, not whether either tool fits your constraints. ### Are localGPT and book-to-skill open source? Yes - both are open-source projects on GitHub (localGPT: MIT, book-to-skill: MIT). ### Where can I find alternatives to localGPT or book-to-skill? GraphCanon lists graph-backed alternatives at [localGPT alternatives](/tools/promtengineer-localgpt/alternatives) and [book-to-skill alternatives](/tools/virgiliojr94-book-to-skill/alternatives) ([localGPT markdown twin](/tools/promtengineer-localgpt/alternatives.md), [book-to-skill markdown twin](/tools/virgiliojr94-book-to-skill/alternatives.md)), ranked by typed relationship edges rather than popularity votes. ### Is there a machine-readable version of this comparison? Yes. The markdown twin at [this comparison](/compare/promtengineer-localgpt-vs-virgiliojr94-book-to-skill.md) mirrors this page for agents and LLM crawlers, with the same stats table and FAQ answers. ### Which is better maintained, localGPT or book-to-skill? localGPT: Active. book-to-skill: Very active. Compare maintenance labels, days since push, and release cadence in the trust section below - stars alone do not measure maintenance. ### Where are the full trust reports for localGPT and book-to-skill? GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: [localGPT trust report](/tools/promtengineer-localgpt/trust); [book-to-skill trust report](/tools/virgiliojr94-book-to-skill/trust). --- **Machine-readable endpoints** - JSON: [`/api/graphcanon/graph?tool=promtengineer-localgpt`](/api/graphcanon/graph?tool=promtengineer-localgpt) - LLM index: [/llms.txt](/llms.txt) - Full corpus: [/llms-full.txt](/llms-full.txt) _GraphCanon - The knowledge graph for AI development. https://www.graphcanon.com/_