Convert.FAST

Convert DOCX to PDF Online — Perfect Formatting

Transform Word documents to PDF with embedded fonts and perfect formatting.

Drop up to 50 DOCX files at once — no install, no sign-up required.

Drop DOCX Files Here

25 MB per file Up to 50 files 3 parallel conversions 1 credit each

Encrypted EU Servers Auto-delete 1h

Median DOCX → PDF time (last 10k jobs): 115ms per page

How it works

  1. 1 · Drop your files

    Drag & drop or choose DOCX files. No account required—paid plans unlock bigger batches, higher limits, and priority queues.

  2. 2 · We convert securely

    Processed on our dedicated servers. Encrypted in transit & at rest. High-fidelity rendering with embedded fonts and optimized images. We never store filenames—only file types & sizes for accounting. We never train AI models on uploads.

  3. 3 · Download & auto-delete

    Get pixel-perfect PDFs with embedded fonts for consistent rendering. Files delete automatically after 1 hour. Delete anytime after downloading with one click.

DOCX is Microsoft's modern Word document format based on Office Open XML (OOXML), standardized as ISO/IEC 29500. Introduced in Office 2007, DOCX stores content as compressed XML files inside a ZIP container, supporting rich text formatting, embedded media, styles, templates, and change tracking. Unlike the legacy binary DOC format, DOCX is more compact, less prone to corruption, and easier for third-party applications to parse.

Learn more: Office Open XML on Wikipedia

DOCX is the standard for collaborative document editing and remains fully compatible with Microsoft Word, Google Docs, LibreOffice, and most document processors. For final distribution or archival, consider converting to PDF.

PDF (Portable Document Format) is Adobe's universal document standard, designed to present text, images, and layout consistently across any device or platform. First released in 1993 and later standardized as ISO 32000, PDF supports vector graphics, embedded fonts, forms, annotations, and encryption. It has become the de facto format for document exchange, digital publishing, and archival—billions of PDFs are created daily worldwide.

Learn more: PDF on Wikipedia

PDF excels at preserving document fidelity and works universally—every operating system and browser includes native PDF support. For long-term archival or regulatory compliance, PDF/A is the appropriate variant.

Frequently Asked Questions

Should I use PDF or PDF/A?

Use standard PDF (this converter) for everyday documents:

  • Business reports and presentations
  • Invoices and receipts
  • Marketing materials and brochures
  • Email attachments
  • Password-protected documents

Standard PDF offers smaller file sizes and universal compatibility. PDF/A files are 10-30% larger due to embedded fonts and color profiles required for archival compliance.

Need long-term archival compliance? Legal contracts, government records, academic dissertations, and compliance documentation require PDF/A format. Use our DOCX to PDF/A converter for ISO 19005-2 compliant archival documents guaranteed to remain accessible for 50+ years.

Is DOCX to PDF conversion lossless?

Visually, yes. Our converter preserves the exact visual appearance of your document, including fonts, images, colors, and layout. However, the PDF is not editable like the original DOCX — it becomes a static visual representation.

We embed all fonts (not just subsets) to ensure the PDF renders identically on any device, even if the viewer doesn't have your custom fonts installed.

What happens to images and fonts in my document?

Images: Embedded images are preserved at 90% JPEG quality (balances file size and visual fidelity). Vector graphics (shapes, SmartArt) are rasterized to ensure consistent rendering.

Fonts: All fonts are embedded in the PDF (including custom fonts). This ensures your document looks identical on any device, even without the original fonts installed.

Do you support password-protected DOCX files?

No. Our rendering engine cannot process password-protected documents. You'll need to remove password protection in Microsoft Word before uploading.

To remove protection: Open the document in Word → File → Info → Protect Document → Encrypt with Password → Remove password → Save.

Are fonts embedded in the PDF?

Yes, always. We embed complete font sets in every PDF to ensure consistent rendering across all devices and platforms.

  • All fonts are fully embedded (no external dependencies)
  • PDFs display identically on Windows, Mac, Linux, and mobile
  • Print exactly as shown on any printer
  • Compatible with all PDF readers and archival systems

This increases file size slightly but guarantees your document looks exactly right everywhere.

Should I convert DOC or DOCX files to PDF?

For modern Word documents (Office 2007 or later), you're in the right place—this converter handles .docx files. If you're working with older Word 97-2003 documents (.doc files), use our DOC to PDF converter instead. Both formats convert reliably to PDF, but using the right converter ensures optimal compatibility.

Does converting to PDF preserve hyperlinks?

Yes. Internal and external hyperlinks in your Word document are preserved as clickable links in the PDF.

This includes links to websites, email addresses, and internal document bookmarks. Recipients can click them directly in any PDF reader.

What happens to track changes and comments?

Track changes: The document is converted as it appears in your current view. If track changes are visible (markup mode), they appear in the PDF. If you've accepted/rejected changes, only the final text appears.

Comments: Visible comments render as they appear in Word. For a clean PDF without comments, hide or delete them before uploading.

Tip: To convert with all changes accepted, use Word's "Accept All Changes" before uploading.

Word to PDF vs 'Save as PDF' in Word - any difference?

Both produce valid PDFs, but with different trade-offs:

  • Convert.FAST: Consistent rendering across all documents, automatic font embedding, works without Word installed, batch processing, privacy-focused (no Microsoft telemetry)
  • Word's Save as PDF: Uses your local Word installation, may include document metadata, supports Word-specific PDF options

For most users, results are visually identical. Our converter is ideal for bulk conversions or when you don't have Word installed.

What are the limits for this converter?

TierMax File SizeMax Files/BatchParallel Processing
Free25 MB50 files3 at once
Pro200 MB200 files6 at once
Business1024 MB1000 files10 at once

Note: File size limits are specific to this converter. Batch and parallel processing limits apply to all documents converters site-wide. See all converter limits →

How are credits calculated for this conversion?

Cost: 1 credit per 25 MB

How it works:

  • Files up to 25 MB: 1 credit (minimum)
  • 26-50 MB: 2 credits
  • 51-75 MB: 3 credits
  • 76-100 MB: 4 credits
  • Over 1000 MB: 40 credits (maximum cap)

Example: A 5 MB document = 1 credit. A 95 MB document = 4 credits.

Why per-megabyte? Larger files require more resources (processing, bandwidth, storage).

What are my daily and monthly credit limits?

Credit allocations vary by account tier:

TierDaily LimitMonthly Limit
Free50 credits/day
Pro10,000 credits/month
Business30,000 credits/month

Daily credits (Free tier, including guests) reset every day at midnight UTC. Monthly credits (Pro & Business) reset on your billing cycle date.

Note: With 1 credit per 25 MB, a typical document costs 1 credit. Pro users can convert 10000 documents per month.

Choose Your Plan

Limits shown for DOCX to PDF conversion. One subscription unlocks the entire Tools.FAST Network. Plans cover Convert.FAST, Compress.FAST, PDF.FAST (soon), and all future tools.

Monthly Annual 4 Months Free

Free

$0

For occasional personal use

  • 25 MB per file
  • 50 files per batch
  • 3 parallel conversions
  • 50 credits/day
  • Standard priority
  • Email support
Sign Up Free

No sign-up required. Create an account for your own credit pool.

Popular

Pro

$9 /month

For independent work

  • 200 MB per file
  • 200 files per batch
  • 6 parallel conversions
  • 10,000 credits/month across Tools.FAST
  • High priority
  • Email & chat support
  • One subscription for the entire Tools.FAST network

Business

$19 /month

1 seat

For production scale

  • 1 GB per file
  • 1000 files per batch
  • 10 parallel conversions
  • 30,000 credits/month across Tools.FAST
  • Add seats to invite team members
  • Highest priority
  • Priority email & chat support
  • One subscription for the entire Tools.FAST network

How Credits Work

  • Usually 1 credit per conversion. Exact cost shown before you start.
  • Credits refresh monthly on your billing cycle.
  • Unused credits roll over, capped at your plan's monthly amount.
  • One subscription, all sites. Works across Convert.FAST, Compress.FAST, and future tools.

What's New in DOCX to PDF

Latest improvements to this converter

Last updated December 18, 2025
Dec 18, 2025

Initial release of DOCX to PDF converter. Convert Microsoft Word documents to PDF with embedded fonts and PDF/A-1B compliance.