---
seo_title: Document to PDF API for Converting Office Files | EnConvert
meta_desc: Convert Word, Excel, PowerPoint, HTML, Markdown, iWork, and OpenDocument files to PDF with one REST API. Sync conversions, PDF bytes or presigned URLs.
keywords: document to pdf api, office file to pdf conversion api, word to pdf api, excel to pdf api, powerpoint to pdf api, html to pdf api, markdown to pdf api, odt to pdf api
---

# Document to PDF API

The Documents to PDF endpoints convert office and document files (Microsoft Word, Excel, and PowerPoint, Apple iWork Pages and Numbers, OpenDocument formats, plus HTML and Markdown) into high-quality PDFs through a single REST API. Every endpoint accepts a `multipart/form-data` upload and converts synchronously, returning raw PDF bytes by default or JSON metadata with a presigned download URL. Office and iWork formats are rendered server-side by LibreOffice with the document's own formatting, fonts, and layout preserved, while HTML and Markdown are rendered with WeasyPrint and support custom page sizes, margins, headers, and footers via `pdf_options`.

## Supported conversions

| Conversion | Endpoint | Description |
|------------|----------|-------------|
| [Anything to PDF](/docs/endpoints/convert/documents/anything-to-pdf.md) | `POST /v1/convert/anything-to-pdf` | Catch-all: accepts 36 file extensions (Office, iWork, OpenDocument, RTF, CSV, HTML, Markdown, text, EPUB, images, SVG, PDF) and always returns a PDF. |
| [Anything to Markdown](/docs/endpoints/convert/documents/anything-to-markdown.md) | `POST /v1/convert/anything-to-markdown` | Catch-all: accepts 22 file extensions and always returns one UTF-8 Markdown file. No OCR, so image input returns `400`. |
| [HTML to PDF](/docs/endpoints/convert/documents/html-to-pdf.md) | `POST /v1/convert/html-to-pdf` | Renders `.html` or `.htm` files to PDF with WeasyPrint, with page size, margins, orientation, headers, and footers controlled via `pdf_options`. |
| [Markdown to PDF](/docs/endpoints/convert/documents/markdown-to-pdf.md) | `POST /v1/convert/markdown-to-pdf` | Converts `.md` or `.markdown` files to styled PDFs with tables, syntax-highlighted code blocks, and an optional `[TOC]` table of contents. |
| [Word to PDF](/docs/endpoints/convert/documents/doc-to-pdf.md) | `POST /v1/convert/doc-to-pdf` | Converts Microsoft Word `.doc` and `.docx` documents to PDF with LibreOffice, preserving fonts, formatting, and page layout. |
| [Excel to PDF](/docs/endpoints/convert/documents/excel-to-pdf.md) | `POST /v1/convert/excel-to-pdf` | Converts Microsoft Excel `.xlsx` and `.xls` spreadsheets to PDF with LibreOffice's high-fidelity rendering. |
| [PowerPoint to PDF](/docs/endpoints/convert/documents/ppt-to-pdf.md) | `POST /v1/convert/ppt-to-pdf` | Converts Microsoft PowerPoint `.ppt` and `.pptx` presentations to PDF while preserving slide formatting and fonts. |
| [Pages to PDF](/docs/endpoints/convert/documents/pages-to-pdf.md) | `POST /v1/convert/pages-to-pdf` | Converts Apple iWork Pages `.pages` documents to PDF with server-side LibreOffice rendering. |
| [Numbers to PDF](/docs/endpoints/convert/documents/numbers-to-pdf.md) | `POST /v1/convert/numbers-to-pdf` | Converts Apple iWork Numbers `.numbers` spreadsheets to PDF with formatting and layout preserved. |
| [ODT to PDF](/docs/endpoints/convert/documents/odt-to-pdf.md) | `POST /v1/convert/odt-to-pdf` | Converts OpenDocument Text `.odt` files (the native LibreOffice/OpenOffice Writer format) to PDF. |
| [ODS to PDF](/docs/endpoints/convert/documents/ods-to-pdf.md) | `POST /v1/convert/ods-to-pdf` | Converts OpenDocument Spreadsheet `.ods` files from LibreOffice or OpenOffice Calc to PDF. |
| [ODP to PDF](/docs/endpoints/convert/documents/odp-to-pdf.md) | `POST /v1/convert/odp-to-pdf` | Converts OpenDocument Presentation `.odp` files from LibreOffice or OpenOffice Impress to PDF. |
| [OTS to PDF](/docs/endpoints/convert/documents/ots-to-pdf.md) | `POST /v1/convert/ots-to-pdf` | Converts OpenDocument Spreadsheet Template `.ots` files to PDF with LibreOffice rendering. |

## Shared conventions

- **Authentication:** Every endpoint requires either a private API key via the `X-API-Key` header or a JWT from a public key via `Authorization: Bearer`. See [Authentication](/docs/authentication.md).
- **Request format:** All endpoints accept `multipart/form-data` with the document in the `file` field, plus optional `output_filename`, `direct_download`, and `pdf_options` fields. See [Sync and Async Jobs](/docs/concepts/sync-and-async.md).
- **Synchronous responses:** Conversions run synchronously and return raw PDF bytes (`application/pdf`) by default; set `direct_download=false` to receive JSON metadata with a `presigned_url`, `object_key`, `filename`, `file_size`, and `conversion_time_seconds` instead.
- **PDF options:** HTML and Markdown (WeasyPrint-rendered) support full `pdf_options` including page size, margins, orientation, headers, and footers; the LibreOffice-backed office formats take page layout from the source document and support only `grayscale`. See [Sync and Async Jobs](/docs/concepts/sync-and-async.md).
- **Errors and limits:** Endpoints share the same error semantics: `400` for wrong file type or failed conversion, `401` for missing/invalid credentials, `402` when the monthly ops allowance or storage limit is reached, and `413` when the file exceeds the plan's size limit. See [Error codes](/docs/reference/errors.md).

## Frequently asked questions

### Which document formats can I convert to PDF with the API?

Eleven input formats are supported: HTML (`.html`, `.htm`), Markdown (`.md`, `.markdown`), Word (`.doc`, `.docx`), Excel (`.xlsx`, `.xls`), PowerPoint (`.ppt`, `.pptx`), Apple Pages (`.pages`), Apple Numbers (`.numbers`), and the OpenDocument formats `.odt`, `.ods`, `.odp`, and `.ots`. Each has its own dedicated `POST /v1/convert/*` endpoint.

### Can I control page size, margins, headers, and footers in the PDF output?

Only on the WeasyPrint-rendered endpoints (HTML to PDF and Markdown to PDF), where `pdf_options` accepts `page_size`, custom width/height in millimeters, `orientation`, `margins`, and `header`/`footer` with template variables like `{{page}}` and `{{total_pages}}`. The LibreOffice-backed office endpoints preserve the source document's own page layout and support only the `grayscale` option.

### How do I get a download URL instead of raw PDF bytes?

Set `direct_download=false` on any endpoint. Instead of the PDF body, the response is JSON metadata containing a `presigned_url` for downloading the file, along with the `object_key`, `filename`, `file_size`, and `conversion_time_seconds`.