pdfporter

Files in, PDFs out — and PDFs reshaped. pdfporter is a client for the conv2pdf conversion service: it takes the path of a file on your computer, sends it for conversion, and writes the result back next to the original. Office documents, spreadsheets, presentations, images, e-books, PostScript and HTML files become PDFs; PDFs become Word documents or per-page images; and PDFs can be merged, split, page-extracted, rotated, numbered, watermarked, compressed, password-protected and unlocked.

Configuration

• CONV2PDF_API_KEY (required for calls) — created in the conv2pdf dashboard, Developer tab. It is sent on every request as Authorization: Bearer <key>. Without a key the server still starts and lists its tools; any tool call fails with a message explaining how to set the key.

• CONV2PDF_API_URL (optional) — API base URL. Defaults to https://api.conv2pdf.com/v1.

• CONV2PDF_TIMEOUT_MS (optional) — per-request timeout in milliseconds. Defaults to 120000, because a conversion may legitimately take up to about a minute.

Related MCP server: MCP PDF and DOCX Server

Tools

• convert_to_pdf — convert a file to PDF, chosen from its extension: Word, Excel, PowerPoint, OpenDocument, Apple Pages, RTF, TXT and CSV files go through office-to-pdf; PNG, JPG, WebP, GIF and TIFF images through image-to-pdf; HEIC/HEIF photos through heic-to-pdf; EPUB through epub-to-pdf; PS/EPS through ps-to-pdf; HTML through html-to-pdf. An unknown extension fails locally, with no request made.

• convert_url_to_pdf — render a public web page to PDF from its address. It always takes an output_path, because there is no input file to write next to.

• convert_heic_to_jpg — an iPhone HEIC or HEIF photo as a JPG.

• convert_pdf_to_word — a PDF with real text as an editable DOCX document. Pass password to open a protected PDF.

• convert_pdf_to_images — one PNG (default) or JPG per page, delivered in a ZIP file.

• merge_pdfs — combine 2 to 20 PDFs into one, in the order given in paths.

• extract_pdf_pages — copy the pages listed in ranges (such as 1-5,7,10-12) into a new PDF, in the order written.

• split_pdf — one PDF per page, in a ZIP file.

• rotate_pdf — turn every page by rotation: 90, 180 or 270 degrees.

• add_page_numbers — number the pages, as "3 / 12" (format: "full", the default) or "3" (format: "simple"), at position bottom-center (default), bottom-left or bottom-right.

• add_watermark — stamp a text of up to 50 characters on every page.

• compress_pdf — reduce the size, with quality low, medium (default) or high, keeping images at 72, 150 or 300 DPI.

• protect_pdf — set a new password (6 to 64 characters), with prevent_print and prevent_copy to forbid printing or copying.

• unlock_pdf — remove a password you know (pass it as password), or the printing and copying restrictions.

• get_quota — the plan, usage and limits of the API key, returned verbatim.

Most PDF-reading tools accept an optional password that opens a protected PDF; the result has no password.

How a conversion behaves

1. The input file is read locally and POSTed as multipart/form-data to <base>/convert/<api-tool>, the file in the file field plus the tool's fields as string fields.

2. On HTTP 429 or 503 the server waits for the delay the API gives (the Retry-After header, else the body's retry_after seconds) and retries, at most twice and only for delays of 30 seconds or less.

3. The convert response carries a job_id and a relative download_url; the result is downloaded from the API origin, written to disk, and the job is then deleted from the service on a best-effort basis.

Results are never overwritten. By default the output sits next to the input: a conversion swaps the extension (report.docx gives report.pdf), a PDF operation adds a suffix (report.pdf gives report-compressed.pdf for compress_pdf, report-images.zip for convert_pdf_to_images, and so on), and a merge writes merged.pdf next to the first input. When the target name is taken, (2), (3), ... is appended before the extension until a free name is found. With an explicit output_path, an existing file there is refused before anything is sent.

A successful conversion answers with a JSON summary: {"job_id": ..., "output_path": ..., "size_bytes": ...}, plus the quota object copied from the convert response when the service sends one. get_quota returns the service's response body verbatim.

Errors: a non-2xx reply fails with conv2pdf error: <error> when the body carries an error code, else conv2pdf error: HTTP <status>; an unreachable API fails with conv2pdf unreachable.

CLI

Each tool is a subcommand taking one JSON argument string:

npx @reneturcios/pdfporter convert_to_pdf '{"path":"report.docx"}'
npx @reneturcios/pdfporter convert_url_to_pdf '{"url":"https://example.com/article","output_path":"article.pdf"}'
npx @reneturcios/pdfporter convert_heic_to_jpg '{"path":"IMG_0001.heic"}'
npx @reneturcios/pdfporter convert_pdf_to_word '{"path":"report.pdf"}'
npx @reneturcios/pdfporter convert_pdf_to_images '{"path":"report.pdf","format":"jpg"}'
npx @reneturcios/pdfporter merge_pdfs '{"paths":["a.pdf","b.pdf"]}'
npx @reneturcios/pdfporter extract_pdf_pages '{"path":"report.pdf","ranges":"1-5,7,10-12"}'
npx @reneturcios/pdfporter split_pdf '{"path":"report.pdf"}'
npx @reneturcios/pdfporter rotate_pdf '{"path":"scan.pdf","rotation":90}'
npx @reneturcios/pdfporter add_page_numbers '{"path":"report.pdf","position":"bottom-right"}'
npx @reneturcios/pdfporter add_watermark '{"path":"contract.pdf","text":"CONFIDENTIAL"}'
npx @reneturcios/pdfporter compress_pdf '{"path":"big.pdf","quality":"low"}'
npx @reneturcios/pdfporter protect_pdf '{"path":"confidential.pdf","password":"secret123","prevent_print":true}'
npx @reneturcios/pdfporter unlock_pdf '{"path":"protected.pdf","password":"secret123"}'
npx @reneturcios/pdfporter get_quota '{}'
npx @reneturcios/pdfporter --version

Exit codes: 0 on success, 1 on a runtime error, 2 on a usage error.

MCP server

npx -y @reneturcios/pdfporter mcp

MCP client config:

{
  "mcpServers": {
    "pdfporter": {
      "command": "npx",
      "args": ["-y", "@reneturcios/pdfporter", "mcp"],
      "env": {
        "CONV2PDF_API_KEY": "<your key>"
      }
    }
  }
}

Docker

docker run -i ghcr.io/cloudcorprecords/pdfporter
docker run --rm ghcr.io/cloudcorprecords/pdfporter get_quota '{}'

Development

npm install
npm run build   # tsc -> dist/
npm test        # tsx --test test/*.test.ts (fake fetch only, no network)
npm run dev     # run the CLI from source

License

MIT — Copyright (c) 2026 Rene Turcios