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nutrient-document-processing

nutrient-document-processing

github.com/xu-xiangDocuments2.0k39 installsUpdated 34w ago
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About nutrient-document-processing

A skill for developers processing documents with the Nutrient DWS Processor API. It covers conversion, extraction, OCR, redaction, watermarking, signatures, and PDF form filling, with API requests or the described MCP server integration.

Key features

  1. 01Convert multiple document formats
  2. 02Extract text, tables, and key-value pairs
  3. 03Run OCR on scanned documents
  4. 04Redact data with presets or regex
  5. 05Add watermarks and digital signatures
  6. 06Fill PDF forms

Use cases

  1. 01Convert DOCX files to PDF
  2. 02Extract table data from PDFs
  3. 03Make scanned documents searchable
  4. 04Remove personal information before sharing

MCP support

The README describes using `@nutrient-sdk/dws-mcp-server` as an alternative to curl for native tool integration. Its configuration example includes an API key and working directory.

Install

Copy the command and run it in a terminal.

$npx skills add https://github.com/xu-xiang/everything-claude-code-zh --skill nutrient-document-processing

After installing, type/nutrient-document-processingin Claude Code to confirm it loaded.

Details

From the project README

Nutrient 文档处理（Nutrient Document Processing）

使用 Nutrient DWS Processor API 处理文档。转换格式、提取文本和表格、对扫描文档进行 OCR 光学字符识别、脱敏个人身份信息（PII）、添加水印、进行数字签名以及填充 PDF 表单。

设置（Setup）

在 nutrient.io 获取免费 API 密钥。

export NUTRIENT_API_KEY="pdf_live_..."

所有请求均以 multipart POST 形式发送至 https://api.nutrient.io/build，并包含一个 instructions JSON 字段。

操作（Operations）

转换文档（Convert Documents）
# DOCX 转 PDF
curl -X POST https://api.nutrient.io/build \
  -H "Authorization: Bearer $NUTRIENT_API_KEY" \
  -F "[email protected]" \
  -F 'instructions={"parts":[{"file":"document.docx"}]}' \
  -o output.pdf

# PDF 转 DOCX
curl -X POST https://api.nutrient.io/build \
  -H "Authorization: Bearer $NUTRIENT_API_KEY" \
  -F "[email protected]" \
  -F 'instructions={"parts":[{"file":"document.pdf"}],"output":{"type":"docx"}}' \
  -o output.docx

# HTML 转 PDF
curl -X POST https://api.nutrient.io/build \
  -H "Authorization: Bearer $NUTRIENT_API_KEY" \
  -F "[email protected]" \
  -F 'instructions={"parts":[{"html":"index.html"}]}' \
  -o output.pdf

支持的输入格式：PDF, DOCX, XLSX, PPTX, DOC, XLS, PPT, PPS, PPSX, ODT, RTF, HTML, JPG, PNG, TIFF, HEIC, GIF, WebP, SVG, TGA, EPS。

提取文本和数据（Extract Text and Data）
# 提取纯文本
curl -X POST https://api.nutrient.io/build \
  -H "Authorization: Bearer $NUTRIENT_API_KEY" \
  -F "[email protected]" \
  -F 'instructions={"parts":[{"file":"document.pdf"}],"output":{"type":"text"}}' \
  -o output.txt

# 将表格提取为 Excel
curl -X POST https://api.nutrient.io/build \
  -H "Authorization: Bearer $NUTRIENT_API_KEY" \
  -F "[email protected]" \
  -F 'instructions={"parts":[{"file":"document.pdf"}],"output":{"type":"xlsx"}}' \
  -o tables.xlsx
OCR 扫描文档（OCR Scanned Documents）
# OCR 转为可搜索的 PDF（支持 100 多种语言）
curl -X POST https://api.nutrient.io/build \
  -H "Authorization: Bearer $NUTRIENT_API_KEY" \
  -F "[email protected]" \
  -F 'instructions={"parts":[{"file":"scanned.pdf"}],"actions":[{"type":"ocr","language":"english"}]}' \
  -o searchable.pdf

语言：支持 100 多种语言，通过 ISO 639-2 代码指定（例如 eng, deu, fra, spa, jpn, kor, chi_sim, chi_tra, ara, hin, rus）。也可以使用完整的语言名称，如 english 或 german。请参阅完整的 OCR 语言对照表以获取所有支持的代码。

脱敏敏感信息（Redact Sensitive Information）
# 基于模式（SSN, 电子邮件）
curl -X POST https://api.nutrient.io/build \
  -H "Authorization: Bearer $NUTRIENT_API_KEY" \
  -F "[email protected]" \
  -F 'instructions={"parts":[{"file":"document.pdf"}],"actions":[{"type":"redaction","strategy":"preset","strategyOptions":{"preset":"social-security-number"}},{"type":"redaction","strategy":"preset","strategyOptions":{"preset":"email-address"}}]}' \
  -o redacted.pdf

# 基于正则表达式
curl -X POST https://api.nutrient.io/build \
  -H "Authorization: Bearer $NUTRIENT_API_KEY" \
  -F "[email protected]" \
  -F 'instructions={"parts":[{"file":"document.pdf"}],"actions":[{"type":"redaction","strategy":"regex","strategyOptions":{"regex":"\\b[A-Z]{2}\\d{6}\\b"}}]}' \
  -o redacted.pdf

预设（Presets）：social-security-number, email-address, credit-card-number, international-phone-number, north-american-phone-number, date, time, url, ipv4, ipv6, mac-address, us-zip-code, vin。

添加水印（Add Watermarks）
curl -X POST https://api.nutrient.io/build \
  -H "Authorization: Bearer $NUTRIENT_API_KEY" \
  -F "[email protected]" \
  -F 'instructions={"parts":[{"file":"document.pdf"}],"actions":[{"type":"watermark","text":"CONFIDENTIAL","fontSize":72,"opacity":0.3,"rotation":-45}]}' \
  -o watermarked.pdf
数字签名（Digital Signatures）
# 自签名 CMS 签名
curl -X POST https://api.nutrient.io/build \
  -H "Authorization: Bearer $NUTRIENT_API_KEY" \
  -F "[email protected]" \
  -F 'instructions={"parts":[{"file":"document.pdf"}],"actions":[{"type":"sign","signatureType":"cms"}]}' \
  -o signed.pdf
填充 PDF 表单（Fill PDF Forms）
curl -X POST https://api.nutrient.io/build \
  -H "Authorization: Bearer $NUTRIENT_API_KEY" \
  -F "[email protected]" \
  -F 'instructions={"parts":[{"file":"form.pdf"}],"actions":[{"type":"fillForm","formFields":{"name":"Jane Smith","email":"[email protected]","date":"2026-02-06"}}]}' \
  -o filled.pdf

MCP 服务器（替代方案）

对于原生工具集成，可以使用 MCP 服务器代替 curl：

{
  "mcpServers": {
    "nutrient-dws": {
      "command": "npx",
      "args": ["-y", "@nutrient-sdk/dws-mcp-server"],
      "env": {
        "NUTRIENT_DWS_API_KEY": "YOUR_API_KEY",
        "SANDBOX_PATH": "/path/to/working/directory"
      }
    }
  }
}

何时使用

  • 在不同格式之间转换文档（PDF, DOCX, XLSX, PPTX, HTML, 图像）
  • 从 PDF 中提取文本、表格或键值对
  • 对扫描文档或图像进行 OCR
  • 在共享文档前脱敏个人身份信息（PII）
  • 为草案或机密文档添加水印
  • 为合同或协议进行数字签名
  • 以编程方式填充 PDF 表单

链接（Links）

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