nutrient-document-processing

$2a

# DOCX to PDF

curl -X POST https://api.nutrient.io/build \

  -H "Authorization: Bearer $NUTRIENT_API_KEY" \

  -F "document.docx=@document.docx" \

  -F 'instructions={"parts":[{"file":"document.docx"}]}' \

  -o output.pdf

# PDF to DOCX

curl -X POST https://api.nutrient.io/build \

  -H "Authorization: Bearer $NUTRIENT_API_KEY" \

  -F "document.pdf=@document.pdf" \

  -F 'instructions={"parts":[{"file":"document.pdf"}],"output":{"type":"docx"}}' \

  -o output.docx

# HTML to PDF

curl -X POST https://api.nutrient.io/build \

  -H "Authorization: Bearer $NUTRIENT_API_KEY" \

  -F "index.html=@index.html" \

  -F 'instructions={"parts":[{"html":"index.html"}]}' \

  -o output.pdf

Supported inputs: PDF, DOCX, XLSX, PPTX, DOC, XLS, PPT, PPS, PPSX, ODT, RTF, HTML, JPG, PNG, TIFF, HEIC, GIF, WebP, SVG, TGA, EPS.

Extract Text and Data

# Extract plain text

curl -X POST https://api.nutrient.io/build \

  -H "Authorization: Bearer $NUTRIENT_API_KEY" \

  -F "document.pdf=@document.pdf" \

  -F 'instructions={"parts":[{"file":"document.pdf"}],"output":{"type":"text"}}' \

  -o output.txt

# Extract tables as Excel

curl -X POST https://api.nutrient.io/build \

  -H "Authorization: Bearer $NUTRIENT_API_KEY" \

  -F "document.pdf=@document.pdf" \

  -F 'instructions={"parts":[{"file":"document.pdf"}],"output":{"type":"xlsx"}}' \

  -o tables.xlsx

OCR Scanned Documents

# OCR to searchable PDF (supports 100+ languages)

curl -X POST https://api.nutrient.io/build \

  -H "Authorization: Bearer $NUTRIENT_API_KEY" \

  -F "scanned.pdf=@scanned.pdf" \

  -F 'instructions={"parts":[{"file":"scanned.pdf"}],"actions":[{"type":"ocr","language":"english"}]}' \

  -o searchable.pdf

Languages: Supports 100+ languages via ISO 639-2 codes (e.g., eng, deu, fra, spa, jpn, kor, chi_sim, chi_tra, ara, hin, rus). Full language names like english or german also work. See the complete OCR language table for all supported codes.

Redact Sensitive Information

# Pattern-based (SSN, email)

curl -X POST https://api.nutrient.io/build \

  -H "Authorization: Bearer $NUTRIENT_API_KEY" \

  -F "document.pdf=@document.pdf" \

  -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

# Regex-based

curl -X POST https://api.nutrient.io/build \

  -H "Authorization: Bearer $NUTRIENT_API_KEY" \

  -F "document.pdf=@document.pdf" \

  -F 'instructions={"parts":[{"file":"document.pdf"}],"actions":[{"type":"redaction","strategy":"regex","strategyOptions":{"regex":"\\b[A-Z]{2}\\d{6}\\b"}}]}' \

  -o redacted.pdf

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.

Add Watermarks

curl -X POST https://api.nutrient.io/build \

  -H "Authorization: Bearer $NUTRIENT_API_KEY" \

  -F "document.pdf=@document.pdf" \

  -F 'instructions={"parts":[{"file":"document.pdf"}],"actions":[{"type":"watermark","text":"CONFIDENTIAL","fontSize":72,"opacity":0.3,"rotation":-45}]}' \

  -o watermarked.pdf

Digital Signatures

# Self-signed CMS signature

curl -X POST https://api.nutrient.io/build \

  -H "Authorization: Bearer $NUTRIENT_API_KEY" \

  -F "document.pdf=@document.pdf" \

  -F 'instructions={"parts":[{"file":"document.pdf"}],"actions":[{"type":"sign","signatureType":"cms"}]}' \

  -o signed.pdf

Fill PDF Forms

curl -X POST https://api.nutrient.io/build \

  -H "Authorization: Bearer $NUTRIENT_API_KEY" \

  -F "form.pdf=@form.pdf" \

  -F 'instructions={"parts":[{"file":"form.pdf"}],"actions":[{"type":"fillForm","formFields":{"name":"Jane Smith","email":"jane@example.com","date":"2026-02-06"}}]}' \

  -o filled.pdf

MCP Server (Alternative)

For native tool integration, use the MCP server instead of 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"

      }

    }

  }

}

When to Use

• Converting documents between formats (PDF, DOCX, XLSX, PPTX, HTML, images)

• Extracting text, tables, or key-value pairs from PDFs

• OCR on scanned documents or images

• Redacting PII before sharing documents

• Adding watermarks to drafts or confidential documents

• Digitally signing contracts or agreements

• Filling PDF forms programmatically

Links

• API Playground

• Full API Docs

• npm MCP Server