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Document Converter

Document Converter Online Free

Convert PDF, DOCX, TXT, XLSX, EPUB, and HTML files between formats. Extract images from PDFs, convert Word documents to PDF, turn web pages into PDFs, and organize PDF pages. Merge, split, rotate, and watermark PDFs without any software installation. All processing runs in your browser.

Supported Document Formats

Pick a format to see available conversions

PDFDOCXTXTXLSX

Document conversion covers a wide range of tasks: turning a PDF into images, converting a Word document to PDF for sharing, extracting text from scanned pages with [OCR](/tools/ocr), or assembling multiple images into a single PDF. According to the [PDF specification](https://opensource.adobe.com/dc-acrobat-sdk-docs/pdfstandards/), PDF is the most widely adopted document format for cross-platform sharing, which is why so many conversion workflows involve PDF as either the source or the target.

This document converter hub brings together every document-related tool on the site. You can convert PDF pages to JPG or PNG images, convert DOCX files to PDF, turn HTML pages or Markdown files into PDFs, and convert between PDF and EPUB for ebook workflows. There are also tools for merging, splitting, rotating, watermarking, and reorganizing PDF pages. All tools run in your browser using JavaScript libraries like pdf-lib and pdfjs-dist. Your files are not uploaded to any server.

For scanned documents and images containing text, the [OCR text extractor](/tools/ocr) and [image to searchable PDF](/tools/image-to-searchable-pdf) tools use Tesseract.js to recognize text in over 13 languages and embed an invisible text layer behind the page image, making the resulting PDF searchable and copyable.

How to Convert Documents Online

  1. 1Pick the tool you need from the list below. Each tool page has its own upload area.
  2. 2Drag your file into the upload box or click to browse. Most tools accept files up to 200MB.
  3. 3Configure any options the tool offers, such as page range, image quality, or output format.
  4. 4Click the convert or process button. The tool runs entirely in your browser.
  5. 5Preview the result if applicable, then download the converted file.

When Should You Use These Tools

  • Converting a Word document to PDF before sending it to a client or employer
  • Extracting pages from a PDF as JPG or PNG images for a presentation
  • Merging multiple PDF reports into a single document for archiving
  • Splitting a large PDF into individual pages for selective sharing
  • Adding a watermark to a PDF before distributing it publicly
  • Converting HTML pages or Markdown files to PDF for offline reading
  • Creating a searchable PDF from scanned documents using OCR
  • Converting an EPUB ebook to PDF for printing or annotation

Real World Examples

Converting a Word contract to PDF

A freelance designer sends a 12-page service agreement to a client. The client uses a Mac and the formatting in the DOCX file shifts when opened in Pages. Converting the DOCX to PDF with the [DOCX to PDF](/tools/docx-to-pdf) tool preserves the layout exactly as designed. The resulting PDF is 1.4MB and opens identically on any device. The conversion takes about 8 seconds for a 12-page document.

Extracting images from a PDF report

A marketing analyst receives a 40-page annual report PDF and needs the charts and graphs as separate images for a slide deck. Using the [PDF to JPG](/tools/pdf-to-jpg) tool, they select 300 DPI output and download all 40 pages as individual JPG files in a ZIP archive. The entire process takes under 30 seconds and produces images at 2480x3508 pixels, suitable for print-quality slides.

Making a scanned document searchable

A law firm scans 15 pages of handwritten meeting notes as images. They use the [image to searchable PDF](/tools/image-to-searchable-pdf) tool with English language recognition. The tool runs OCR on each page and embeds an invisible text layer behind the page images. The resulting PDF is searchable by keyword and text can be copied and pasted into other documents. Processing 15 pages takes about 3 minutes on a mid-range laptop.

Merging project documents for a client deliverable

An architect needs to deliver a single PDF containing a cover page, 8 floor plan images, and a 5-page specification document. They convert the 8 plan images to a single PDF with [JPG to PDF](/tools/jpg-to-pdf), then merge that PDF with the specification PDF using the [PDF Merger](/tools/pdf-merger). The final 14-page PDF is 6.2MB and ready to email to the client.

How Browser-Based Document Conversion Works

Traditional document conversion requires desktop software like Adobe Acrobat or Microsoft Word. These tools run on the operating system and have direct access to system fonts and rendering engines. Browser-based conversion works differently: JavaScript libraries like [pdf-lib](https://pdf-lib.js.org/) for creating and modifying PDFs, [pdfjs-dist](https://mozilla.github.io/pdf.js/) for rendering PDF pages, and [Tesseract.js](https://tesseract.projectnaptha.com/) for OCR run inside the browser using WebAssembly.

The advantage is privacy. Your files never leave your device, which matters for sensitive documents like contracts, medical records, or legal correspondence. The trade-off is that browser-based tools rely on your computer's processing power and memory. Files larger than 100MB may take 10 to 20 seconds to process on mid-range hardware, and very large PDFs (500MB+) can exceed browser memory limits.

For DOCX to PDF conversion, the tool uses [Mammoth](https://github.com/mwilliamson/mammoth.js) to extract content from the Word document as HTML, renders it in the browser, then captures the rendered output as a PDF using jsPDF. This approach handles text, headings, lists, and basic formatting. Complex layouts with columns, text boxes, or embedded objects may not convert perfectly because the browser rendering engine differs from Microsoft Word's layout engine.

Benefits of Browser-Based Document Conversion

  • Files never leave your device, keeping sensitive documents private
  • No software installation or account registration required
  • Works on any operating system: Windows, Mac, Linux, ChromeOS
  • PDF tools use pdf-lib and pdfjs-dist, the same libraries powering major web applications
  • OCR supports 13 languages including English, Spanish, French, German, and Chinese
  • Batch operations like merging and splitting handle multiple files in one session
  • All tools are free with no daily limits, watermarks, or hidden upsells

Document Conversion Methods Compared

MethodProsCons
Browser-based toolsPrivate, free, no installation, cross-platformLimited by browser memory, slower for very large files
Desktop software (Acrobat, Word)Full formatting fidelity, advanced featuresPaid, OS-specific, large install size
Online upload convertersFast, handle large filesFiles uploaded to servers, privacy concerns, often paid for large files
Command-line tools (pandoc, imagemagick)Scriptable, powerful, freeRequires technical knowledge, terminal-only

Tips for Best Results

  • For DOCX to PDF, keep your Word formatting simple. Complex column layouts and text boxes may not convert cleanly in the browser.
  • When extracting images from PDF, use 300 DPI for print quality or 150 DPI for web use. Higher DPI produces larger files.
  • If a PDF is password-protected, the PDF to JPG and PDF to EPUB tools can unlock it if you provide the password.
  • For OCR, choose the language that matches the document. Mixed-language documents work best with the primary language selected.
  • When merging PDFs, organize your files in the correct order before starting. The merger preserves the sequence you set.
  • Compress PDFs with the PDF Compressor before emailing. A 20MB report can often shrink to 3 to 5MB without visible quality loss.
  • Use the PDF Page Organizer to remove blank pages and rotate sideways pages before sharing a document.
  • For HTML to PDF, make sure the web page is fully loaded in the browser before converting. Dynamic content may not render if the page is still loading.

Frequently Asked Questions

Are my documents uploaded to a server?

No. All document conversion and processing runs in your browser using JavaScript and WebAssembly. Your files stay on your device. This is particularly important for sensitive documents like contracts, legal papers, or medical records.

Can I convert DOCX to PDF without Microsoft Word?

Yes. The DOCX to PDF tool uses Mammoth.js to parse the Word document and render it in the browser, then captures the output as a PDF. You do not need Word installed. The conversion handles text, headings, lists, tables, and basic formatting. Complex layouts with columns or embedded objects may not convert perfectly.

How accurate is the OCR text recognition?

OCR accuracy depends on image quality and text clarity. Clear scanned documents at 300 DPI or higher typically achieve 95 to 99% accuracy with Tesseract.js. Handwritten text, low-resolution scans, or documents with unusual fonts will have lower accuracy. The tool supports 13 languages, and selecting the correct language improves recognition significantly.

What is the maximum file size for document conversion?

There is no hard limit, but browser memory is the constraint. PDFs up to 200MB generally work well. Files larger than 500MB may cause the browser tab to crash on devices with less than 8GB of RAM. For very large documents, consider splitting them first with the PDF Splitter tool.

Can I edit a PDF with these tools?

You can reorganize pages, rotate them, delete unwanted pages, add text watermarks, and split or merge PDFs. These tools do not support editing existing text content within a PDF. For text editing, convert the PDF to DOCX using the PDF to Word tool, make your changes, then convert back to PDF.

Does the PDF to JPG tool support password-protected PDFs?

Yes. If your PDF is encrypted with a user password, the tool will prompt you to enter it. The password is used locally in the browser to decrypt the PDF and is never transmitted anywhere. Owner-password-protected PDFs (which restrict editing but allow viewing) are also supported.

Is there a limit on how many documents I can convert?

No. All tools are free with no daily limits, no file count restrictions, and no watermarks added to output. You can convert as many documents as you need.

Conclusion

Document conversion does not require expensive software or cloud services that upload your files. The tools collected here handle the most common document tasks: format conversion, page management, OCR, and PDF assembly. Everything runs in your browser, which means your contracts, reports, and scanned documents stay private. Pick a tool from the list above to get started.