Document Tools
DOCX to PDF API Overview
The DOCX to PDF API offers seamless, high-speed, and highly accurate conversion of Word documents to PDF, supporting both DOC and DOCX file formats without requiring Microsoft Office.
Our API includes advanced options like selecting specific page ranges, converting markups, tags, metadata, headings, and bookmarks, plus updating tables of content automatically.
Your documents stay safe with SOC2, ISO 27001, HIPAA, and GDPR compliance, and you can choose to process files completely in memory or use our secure temporary storage that deletes files automatically. Everything in your document stays perfect—fonts, images, tables, and formatting—while our ready-to-use code libraries for JavaScript, Python, PHP, C#, and other languages make it simple to add to your project.
Trusted by over 1,100 companies worldwide, our servers around the globe ensure fast, reliable conversions with helpful support whenever you need it.
Instant Conversion
Super fast conversion that turns lightweight DOC and DOCX into PDF in under one second.
Office-Free Workflow
No Microsoft Office license required - conversion runs entirely in cloud.
Font Fidelity
Preserves all embedded fonts so PDFs match accurately your original design.
Structure & Quality
Retains Word document layout, styles, images and vectors with pixel-perfect accuracy.
Rich Conversion Options
Control whether to convert bookmarks, mark-ups, update TOC before conversion, and more.
Enterprise-Grade Security
ISO 27001, GDPR & HIPAA compliant infrastructure safeguards data.
Customizable Parameters
Fine-tune your automation with these powerful conversion options
File
File Supported formats: .doc .docxFile to be converted. Value can be URL or file content.
Password
StringSets the password to open protected documents.
PageRange
String Default: 1-6000Set page range. Example 1-10.
ConvertMarkups
Bool Default: FalseConvert document markups like revisions and comments.
ConvertTags
Bool Default: FalseConvert document structure tags for accessibility.
ConvertMetadata
Bool Default: TrueConvert document metadata like Title, Author, Keywords to PDF metadata.
BookmarkMode
Collection Default: headingsSpecifies how bookmarks are created in the generated PDF: None disables bookmark creation, Headings generates bookmarks based on document headings, and Bookmarks uses existing bookmarks defined in the original file.
UpdateToc
Bool Default: FalseUpdate all tables of content in the document.
Pdfa
Bool Default: FalseCreate PDF/A-3a compliant document.
StoreFile
Bool Default: FalseWhen the StoreFile parameter is set to True, your converted file is written to ConvertAPI’s encrypted, temporary storage and made available via a time-limited secure download URL, valid for up to 3 hours. After this period, the file is permanently deleted.
When StoreFile is set to False, conversion happens entirely in-memory. The raw file bytes are streamed back in the API response without touching disk or external storage, ensuring maximum security and zero persistence so that only you can access the content.
Integrate within minutes
Easy DOCX to PDF automation using our simple REST-API
Businesses trust us
Highest rated File Conversion API on major B2B software listing platforms: Capterra, G2, and Trustpilot.
"ConvertAPI has been a game-changer for our document automation workflows. Their conversion accuracy and API reliability are unmatched in the industry for over 7 years."
"ConvertAPI is a reliable, cost-effective solution with a proven track record of stability. It has grown significantly in maturity, adopting enterprise-grade practices over the years."
"We've integrated ConvertAPI across our entire document processing platform. The performance is exceptional and the support team is always responsive. Highly recommended!"
Enterprise-Grade Security
We ensure that all document processing is handled securely in the cloud, adhering to industry-leading standards like ISO 27001, GDPR, and HIPAA. To enhance security even further, we can ensure that no files or data are stored on our servers and never leave your country.
Learn more about security