zhtx2024/dsh-pdf

Plugin插件 Native原生 ⭐ 3 MIT Docs & Writing文档与写作UI & Themes界面与主题

PDF解析工具包,适用于DeepSeek Harness:支持pdf_info、pdf_extract_text、pdf_render_page功能,采用pdfjs/内置混合引擎,并为非嵌入CJK PDF提供系统字体渲染。

Project Overview项目介绍

This is a native DSH plugin that adds three agent-facing PDF processing tools to your DeepSeek Harness instance. The tools cover all common PDF processing needs agents have, from getting basic document info to extracting text and rendering full pages as image files. To install it, run the command dsh plugin --profile web add @zhtx2026/dsh-pdf in your terminal, or link a local development checkout with dsh plugin --profile web add link:<path-to-repo>. After installation, you just need to restart DSH or open a new session to activate the tools and the embedded agent guidance block.

This plugin is built specifically to solve a common pain point for hardware developers: unrenderable text in schematic PDFs exported from JLC EDA or EasyEDA. Generic PDF libraries like pdfjs-dist fail to render text when fonts are not embedded and lack a ToUnicode map, resulting in missing CJK characters and broken, unusable schematics. The hybrid engine design automatically switches between the standard pdfjs engine for normal PDFs and a fully custom system-font engine for problematic schematics, so agents can reliably and correctly extract text and render full schematics.

The plugin comes with a few known limitations that users should be aware of before using it for production work. Scanned or image-only PDFs will return no text from extraction, though rendering of the page image still works as expected. Exotic CID fonts that don’t follow the common UniGB-UCS2-H encoding fall back to the pdfjs engine, and large PDFs are fully parsed into memory all at once. The entire project is released under the permissive MIT license, so you can modify or reuse it freely for any personal or commercial purpose.

这是专为DeepSeek Harness开发的原生PDF解析工具插件,提供三个面向AI代理的工具调用接口,分别用于获取PDF信息、提取文本内容和渲染指定页面。它针对未嵌入CJK字体的PDF做了特殊优化,比如嘉立创EDA和EasyEDA导出的原理图PDF这类常见场景,解决了通用PDF库无法正确渲染和提取文字的问题。

该插件适合需要处理电子设计原理图PDF的开发者使用,在日常工作流中,AI代理可以先调用pdf_info获取文档页码、尺寸、元数据和字体嵌入状态,再根据结果选择合适的引擎提取文字或渲染页面。你可以通过dsh命令行工具一键安装,安装后重启DeepSeek Harness即可启用,无需额外配置复杂环境。

插件采用双引擎自动选择设计,字体全部嵌入的标准PDF使用pdfjs引擎处理,未嵌入字体的PDF使用自带的系统字体渲染引擎处理。它的已知限制包括扫描版图像PDF无法提取文字,大体积PDF会全量加载到内存中,项目采用MIT开源协议,可免费使用和修改。

Pre-install check安装前体检Compatibility · Security兼容性 · 安全性 1 warning1 项注意
  • Only 3 stars - very few users, little community feedback星标只有 3,几乎没人在用,遇到问题缺少社区反馈
DSH walks through these 9 checksDSH 会逐条核对这 9 项

Compatibility兼容性

  • DSH, Node, OS and profile requirementsDSH 版本 / Node 版本 / 操作系统 / profile 是否满足要求
  • External dependencies and runtimes (Electron / Python / Docker, ...)外部依赖与运行时(Electron / Python / Docker 等)是否齐备
  • Conflicts with installed plugins: command names, skill / tool names, ports, duplicate MCP registration与已装插件是否冲突:命令名、skill / tool 重名、端口占用、重复 MCP 注册

Security安全性

  • Repo matches the facts registered here; archived or abandoned?仓库是否与页面登记一致,是否归档或长期停更
  • Safety of preinstall / install / postinstall and install.sh / setup.ps1preinstall / install / postinstall 与 install.sh、setup.ps1 是否安全
  • curl|bash, download-then-execute, obfuscation, unrelated domains → stop immediatelycurl|bash、下载即执行、混淆代码、无关域名 → 立刻停止
  • Typosquatting or unmaintained packages among the new dependencies新增依赖里有没有 typosquatting 或无人维护的包
  • Requested permissions vs. what the feature actually needs申请了哪些权限、是否超出功能所需(filesystem / network / shell / clipboard)
  • Any sudo / admin requirement, plus uninstall and rollback是否要求 sudo / 管理员权限,以及卸载与回滚方式

Anything uncertain must be marked unknown with a note on how to confirm it. This site's signal screen is a static snapshot, not a security audit.拿不准的必须标「未知」并说明要我怎么确认。本站的信号筛查是静态快照,不能替代安全审计。

Or use CLI install (for developers)或使用命令行安装(适合开发者)

CLI Install命令行安装

dsh plugin --profile web add @zhtx2026/dsh-pdf

把 zhtx2024/dsh-pdf 加入你的 DSH 配置(web profile)即可启用。

READMEREADME

@zhtx2026/dsh-pdf

PDF parsing toolkit for DeepSeek Harness — three agent-facing tools (pdf_info / pdf_extract_text / pdf_render_page) with hybrid engines, including system-font rendering for PDFs with non-embedded CJK fonts (e.g. EasyEDA / JLC EDA schematic exports).

English | 中文

Tags: dsh-plugin · pdf · pdfjs · canvas · schematic · tools

Install

dsh plugin --profile web add @zhtx2026/dsh-pdf

Or from a local checkout during development:

dsh plugin --profile web add link:<path-to-repo>

Then restart DSH (or open a new session) — the three tools and an agent guidance block become available.

Tools

Tool What it does
pdf_info Page count, page sizes (pt), document metadata, and the font list with per-font embedded flags.
pdf_extract_text Extracts text per page; optional page and withPosition (per-line x/y coordinates + font size).
pdf_render_page Renders one page to a PNG (local file) with configurable scale/outDir; engine auto-selection.

Why a custom renderer?

pdfjs-dist cannot render text in PDFs whose fonts are not embedded and lack a ToUnicode map — the classic case is JLC EDA / EasyEDA schematic exports (SimSun/SimHei Type0 fonts with UniGB-UCS2-H encoding): pdfjs emits translateFont failed and drops the glyphs.

dsh-pdf solves this with a two-engine design:

  • pdfjs engine — used when all fonts are embedded (standard PDFs).
  • sysfont engine — a built-in content-stream renderer that decodes the PDF text operators (BT/ET, Tf, Tm, Td, Tj, TJ) itself, maps UniGB-UCS2-H/UTF-16BE strings to Unicode, and draws them with system fonts (SimSun, SimHei, Microsoft YaHei, …) via @napi-rs/canvas.

Text extraction uses the same auto-selection: embedded fonts → pdfjs text layer; non-embedded fonts → the built-in decoder (which correctly recovers CJK text pdfjs loses).

Example

pdf_info("D:/Downloads/SCH_SA-V11A.pdf")
→ 3 pages, A3 landscape, jsPDF producer, 6 fonts (all non-embedded)

pdf_extract_text("D:/Downloads/SCH_SA-V11A.pdf", { page: 1 })
→ net names, pin numbers, and Chinese labels ("主控板", "嘉立创", …)

pdf_render_page("D:/Downloads/SCH_SA-V11A.pdf", { page: 1, scale: 2 })
→ D:/Downloads/SCH_SA-V11A-pages/page-1.png  (2396×1698, engine: sysfont)

Showing the opening section of the README — the full document lives in the repository以上为 README 开头摘要,完整文档在仓库内 · View the full README on GitHub →在 GitHub 查看完整 README →

← 上一个 Prev dsh-model-balance 下一个 Next aifp-mcp →