跳到正文
cccskills
免费在 GitHub 公开

reliable-pdf-extraction

Extract PDF text when the usual file reader returns errors or unusable output. Choose command-line tools or Python libraries for plain text, metadata, tables, and complex layouts, with checks for scanned or copy-protected documents.

中文简介正在准备中。当前显示英语简介。

原文查看原文说明

Use shell commands or Python libraries to extract PDF text when read_file PDF handler fails

查看安装方法

适用场景

  • Recovering text when PDF reading fails
  • Extracting tables and structured data from PDFs
  • Inspecting PDF metadata
  • Choosing extraction methods for complex layouts

包含的文件(2)

  • SKILL.md2.6 KB
  • .skill_id37 B

SKILL.md(原文)

安装前可以查看交给 AI 代理的指令内容。

Reliable PDF Text Extraction

Problem

The read_file tool with filetype='pdf' often returns binary image data, errors, or unusable output when attempting to extract text from PDF documents. This makes it unreliable for structured data extraction tasks.

Solution

Use run_shell with command-line tools (pdftotext, pdfinfo) or execute_code_sandbox with Python libraries (PyMuPDF, pdfplumber) to extract PDF text content reliably.

Methods

Method 1: pdftotext (Recommended for simple extraction)

# Extract all text to stdout
pdftotext input.pdf -

# Or extract to file
pdftotext input.pdf output.txt
cat output.txt

Method 2: pdfinfo (For metadata)

pdfinfo input.pdf

Method 3: Python with PyMuPDF (fitz)

import fitz  # PyMuPDF

doc = fitz.open("input.pdf")
text = ""
for page in doc:
    text += page.get_text()
print(text)
doc.close()

Method 4: Python with pdfplumber (Better for tables/structured data)

import pdfplumber

with pdfplumber.open("input.pdf") as pdf:
    for page in pdf.pages:
        text = page.extract_text()
        print(text)
        # For tables:
        # tables = page.extract_tables()

Workflow

  1. Attempt read_file with filetype='pdf' first (in case it works)

  2. Check output - If you receive:

    • Binary/garbage data
    • Error messages
    • Empty or truncated content
    • Image data instead of text
  3. Fall back to one of the extraction methods above:

    • Use pdftotext via run_shell for quick text extraction
    • Use pdfplumber via execute_code_sandbox for structured data/tables
    • Use PyMuPDF for complex layouts or when you need more control
  4. Process the extracted text for your task

Example Usage

# Via run_shell
result = run_shell(command="pdftotext document.pdf -")
pdf_text = result.stdout

# Via execute_code_sandbox
code = """
import pdfplumber
with pdfplumber.open("/path/to/document.pdf") as pdf:
    for page in pdf.pages:
        print(page.extract_text())
"""
result = execute_code_sandbox(code=code)
pdf_text = result.stdout

Tips

  • pdftotext is fastest and most reliable for plain text extraction
  • pdfplumber excels at extracting tables and preserving layout
  • PyMuPDF offers the most control for complex PDF structures
  • Always check if the PDF is scanned/image-based (may need OCR tools like tesseract)
  • Some PDFs have copy protection that may prevent text extraction

评价

还没有评价。欢迎分享你的使用感受。

评论

无需登录即可发表。欢迎分享使用感受、提问,或说明在哪些环境下无法运行。

还没有评论。来写第一条吧。

提交后会立即公开。请勿填写邮箱、电话等个人信息。URL 最多 2 个。

0 / 1000 字

此表单受 reCAPTCHA 保护,适用 Google 的隐私权政策和服务条款。

同一仓库的技能

Prepare audio stems, the separate parts of a track, for mixing by matching their durations with silence, loops, or crossfades. Verify each generated and processed file before moving to the next production step.

中文简介正在准备中。当前显示英语简介。

  • Match audio parts with different durations
  • Extend drums and melodic parts using suitable methods
  • Check audio specifications before mixing
HKUDS/OpenSpace77602026年8月13日 更新

Produce audio in separate stems, meaning individual instrument tracks, and verify each output as you go. Align track lengths with silence, loops, or crossfades, then apply effects, mix a master, and package the files.

中文简介正在准备中。当前显示英语简介。

  • Align instrument tracks to a reference audio file
  • Choose how to extend tracks that are too short
  • Verify audio properties after generation and effects
HKUDS/OpenSpace77602026年8月13日 更新

Build serverless endpoints that relay external API requests for a dashboard while keeping API keys on the server. Includes Vercel examples for input checks, caching, cross-origin access, and consistent JSON responses.

中文简介正在准备中。当前显示英语简介。

  • Connect a dashboard to external APIs without exposing API keys
  • Create endpoints for stock quotes and news
  • Standardize API responses and error handling
HKUDS/OpenSpace77602026年8月13日 更新

Produce a master track and separate audio parts through a structured Python workflow. Apply filters and reverb, export WAV files with consistent settings, package them in a ZIP archive, and check that the deliverables meet the requested specifications.

中文简介正在准备中。当前显示英语简介。

  • Export a master track with separate audio parts
  • Apply filters and reverb to audio
  • Check duration and format across deliverables
HKUDS/OpenSpace77602026年8月13日 更新

Keep document creation moving when web searches and page retrieval repeatedly fail. The skill preserves the original task, uses the model’s existing knowledge, and clearly identifies information that could not be checked against external sources.

中文简介正在准备中。当前显示英语简介。

  • Continue drafting after repeated web retrieval failures
  • Preserve task requirements during network errors
  • Mark information that could not be externally verified
HKUDS/OpenSpace77602026年8月13日 更新

When Python execution repeatedly fails in execute_code_sandbox, use a file-based alternative: save the script, run it through the shell, and capture results or errors. The guidance covers paths, imports, timeouts, structured output, and optional cleanup.

中文简介正在准备中。当前显示英语简介。

  • Retry Python work through the shell after repeated sandbox failures
  • Run longer tasks with an adjusted timeout
  • Execute Python work that needs multiple files or system utilities
HKUDS/OpenSpace77602026年8月13日 更新

查看 HKUDS 的全部技能

报告此技能的问题