Convert to PDF Online — DOCX, TXT, Images to PDF Free
Need to create a PDF from a Word document, text file, or image? You can convert to PDF online for free using Keynou's browser-based tools — no software installation, no signup, and no file uploads. Everything runs in your browser, so your documents stay private on your device.
Supported Input Formats
Keynou's convert to PDF tool handles the most common document and image formats:
| Input Format | What It Converts | Best For |
|---|---|---|
| DOCX | Word documents to PDF | Contracts, reports, resumes |
| TXT | Plain text to PDF | Notes, logs, raw text |
| MD | Markdown to PDF | Documentation, READMEs, blog posts |
| JPG/PNG | Images to PDF | Scanned documents, photo archives |
| RTF | Rich text to PDF | Formatted text documents |
| ODT | OpenDocument to PDF | LibreOffice/OpenOffice documents |
Why Convert Documents to PDF?
PDF is the universal format for sharing documents. When you send a PDF, the recipient sees exactly what you intended — same fonts, same layout, same page breaks — regardless of their device or operating system.
Word documents, by contrast, can render differently depending on the recipient's version of Word, installed fonts, and system settings. A carefully formatted resume in Word might look broken on someone else's computer.
Key reasons to convert to PDF:
- Consistent rendering — looks the same everywhere
- Non-editable by default — prevents accidental changes
- Universal compatibility — every device has a PDF reader
- Smaller file size — PDFs are typically smaller than DOCX files with embedded images
- Print-ready — PDFs preserve page layout for accurate printing
How Browser-Based PDF Conversion Works
Traditional online converters upload your file to a server, process it there, and send the PDF back. Keynou does all the work locally in your browser.
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<text x="375" y="35" fill="#1e293b" font-size="16" font-family="sans-serif" text-anchor="middle" font-weight="bold">How Browser-Based PDF Conversion Works</text>
<!-- Input formats -->
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<text x="65" y="92" fill="white" font-size="11" font-family="sans-serif" text-anchor="middle">DOCX</text>
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<text x="65" y="132" fill="white" font-size="11" font-family="sans-serif" text-anchor="middle">TXT / MD</text>
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<text x="65" y="172" fill="white" font-size="11" font-family="sans-serif" text-anchor="middle">JPG / PNG</text>
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<text x="350" y="110" fill="white" font-size="15" font-family="sans-serif" text-anchor="middle" font-weight="bold">Your Browser</text>
<text x="350" y="135" fill="#ede9fe" font-size="12" font-family="sans-serif" text-anchor="middle">Parses document → renders pages</text>
<text x="350" y="155" fill="#ede9fe" font-size="12" font-family="sans-serif" text-anchor="middle">→ generates PDF locally</text>
<!-- Arrow -->
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<!-- Output -->
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<text x="650" y="125" fill="white" font-size="14" font-family="sans-serif" text-anchor="middle" font-weight="bold">PDF</text>
<text x="650" y="145" fill="#d1fae5" font-size="11" font-family="sans-serif" text-anchor="middle">Download</text>
<text x="375" y="200" fill="#64748b" font-size="11" font-family="sans-serif" text-anchor="middle">No server upload — your document never leaves your device</text>
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The browser reads your file using the File API, parses the document structure, renders it to pages, and generates a PDF — all in memory on your device. No network request contains your document content.
Converting Word Documents to PDF
The most common conversion is DOCX to PDF. Keynou's docs to PDF converter preserves:
- Text formatting — fonts, sizes, colors, bold/italic
- Paragraph styles — headings, lists, spacing
- Tables — cell structure, borders, shading
- Images — embedded graphics and photos
- Page layout — margins, page size, orientation
Step-by-Step: DOCX to PDF
- Go to the docs to PDF converter
- Drag and drop your .docx file or click to browse
- Choose page size (A4, Letter, or Legal) and orientation
- Click "Convert to PDF"
- Download the generated PDF
The conversion typically takes a few seconds for standard documents. Files with many high-resolution images may take slightly longer.
Converting Images to PDF
The image to PDF converter turns one or more images into a PDF document. Each image becomes a page. This is useful for:
- Scanned documents — Combine multiple scan images into a single PDF
- Photo archives — Create a PDF portfolio from image files
- Receipts and invoices — Organize individual receipt photos into one PDF
- Comic strips and storyboards — Sequence images into a readable document
Image to PDF Options
- Page size — Fit image to A4, Letter, or use the image's native dimensions
- Orientation — Portrait or landscape
- Margins — Add white space around images
- Order — Drag to reorder images before converting
Converting Text and Markdown to PDF
Plain text and Markdown files convert cleanly to PDF. For Markdown, the converter renders formatting syntax into styled output:
# Document Title
## Section Heading
This is **bold** and *italic* text.
- Bullet point one
- Bullet point two
| Column A | Column B |
|----------|----------|
| Cell 1 | Cell 2 |
The converter parses the Markdown syntax and renders it as a formatted PDF with proper headings, styled text, lists, and tables. This is particularly useful for developers converting README files and documentation to share with non-technical stakeholders.
Page Size and Formatting Options
When converting to PDF, you control the output dimensions:
| Page Size | Dimensions | Common Use |
|---|---|---|
| A4 | 210 × 297 mm | International standard, most common |
| Letter | 8.5 × 11 in | US standard for business documents |
| Legal | 8.5 × 14 in | US legal documents |
| A5 | 148 × 210 mm | Booklets, half-page documents |
You can also set orientation (portrait or landscape) and adjust margins to control how content fits on each page.
Keynou vs. Smallpdf for PDF Conversion
Smallpdf offers Word-to-PDF conversion but with significant free-tier limitations:
| Feature | Keynou | Smallpdf |
|---|---|---|
| Processing | Browser-based | Cloud server |
| File upload | No | Yes |
| Free file size limit | No server limit | 5MB (free tier) |
| Daily limit | Unlimited | 2 tasks per day |
| Account required | No | Yes for most features |
| Watermark | None | None |
| Privacy | File never leaves device | Uploaded to servers |
Smallpdf's 5MB limit and 2-task-per-day restriction make it impractical for regular use without paying. Keynou has no such limits because there are no server costs.
Tips for Best PDF Output
Check your document before converting — Fix any formatting issues in the source file. What you see in Word is what you'll get in the PDF.
Embed fonts if possible — If your DOCX uses custom fonts, ensure they're embedded so the PDF renders correctly on all devices.
Choose the right page size — Use A4 for international audiences and Letter for US recipients. Mismatched page sizes can cause awkward layout shifts.
Compress images before converting — If your document contains large images, compress them first to keep the PDF file size manageable.
Review the PDF after conversion — Open the PDF and check that page breaks, images, and tables look correct before sharing.
Frequently Asked Questions
Will the PDF look exactly like my Word document?
For standard documents with common fonts, the PDF will match closely. Complex layouts with custom fonts or advanced formatting may have minor differences.
Can I convert multiple files into one PDF?
Yes. Use the image to PDF tool to combine multiple images into a single PDF, or merge separate PDFs using the PDF merger after converting each file individually.
Is there a file size limit?
Since conversion happens in your browser, the practical limit is your device's available memory. Most modern browsers handle files well beyond what cloud-based free tiers allow.
Does it work without internet?
You need an internet connection to load the tool page initially. Once loaded, the conversion runs client-side.
Are there watermarks on the output?
No. Keynou's converter produces clean PDFs with no watermarks or branding.
Related Tools
- Docs to PDF — Convert Word, TXT, MD, RTF to PDF
- Image to PDF — Convert images to PDF documents
- PDF Merger — Combine multiple PDFs into one
- PDF Compressor — Reduce PDF file size after conversion
Published: August 20, 2026
Category: PDF Tools
Reading Time: 7 minutes
