PDF CONVERTER
Convert Word, Excel, PowerPoint & images to PDF with OnlyOffice rendering engine Convert any document or image to PDF
Documents (Word, Excel, PowerPoint) are uploaded to a secure server, converted in an isolated environment, and permanently deleted the moment conversion finishes.
Images (JPG, PNG, WebP) are processed entirely in your browser - they never leave your device.
Each file type is handled by the optimal engine for that format.
Drop files here to convert to PDF
or click to browse
Upload files
Drag & drop any supported file - Word, Excel, PowerPoint or images
Convert
Click convert and watch the progress in real-time
Preview & select
Preview pages and select which ones to keep
Download
Download individual PDFs, as ZIP, or merged into one
How to convert PDF to other formats
Convert PDF to Word, Excel, PowerPoint, or images
Full Documentation DocsSelect From PDF
Click the "From PDF" mode button at the top of the converter
Upload PDFs
Drag & drop PDF files - up to 100 MB each, no page limit
Choose format
Pick from DOCX, XLSX, PPTX, JPG, PNG, WEBP, and more
Download
Download individual files or all as ZIP
Why choose this PDF Converter?
21 formats, 4000+ fonts, batch conversion, zero watermarks
Convert both ways
21 formats to PDF and PDF back to 11 formats. Convert to and from Word, Excel, PowerPoint, and images. One tool for both directions.
Batch conversion
Convert dozens of files at once. Mix different formats in one batch - upload Word docs and images together.
Page preview
Preview every page of your converted PDF before downloading. See exactly what you'll get.
Page selection
Select specific pages from converted PDFs. Download only what you need, skip the rest.
Merge to one PDF
Combine all converted documents into a single PDF. Perfect for reports and presentations.
Secure & private
Documents are processed on a secure server and deleted immediately. Images never leave your browser. No cloud services involved.
Frequently Asked Questions
Everything about converting to and from PDF
What file formats can I convert to PDF?
You can convert 21 formats: Word documents (DOC, DOCX, ODT, RTF, TXT), spreadsheets (XLS, XLSX, ODS, CSV), presentations (PPT, PPTX, ODP), and images (JPG, PNG, WEBP, SVG, BMP, AVIF, HEIC). Simply drag and drop any supported file and click convert.
Can I convert different file types at once?
Yes! You can mix file types freely. Upload a Word document, an Excel spreadsheet, and a few images all at once. Each file will be converted to its own PDF, or you can merge them all into one document.
Is there a file size limit?
In "To PDF" mode, each file can be up to 50 MB with a maximum of 500 pages per document. In "From PDF" mode, each PDF can be up to 100 MB with no page limit. There is no limit on the number of files you can convert at once.
Are my files secure?
Documents are sent over HTTPS, converted in an isolated environment, and permanently deleted after conversion. Images are processed entirely in your browser - they never leave your device. No external cloud services are involved.
How is the conversion quality?
OnlyOffice Document Server with 4000+ fonts handles rendering. Complex layouts, tables, images, headers, footers and advanced formatting are preserved accurately.
Do I need to create an account?
No. The PDF converter is completely free with no registration, no watermarks, and no hidden limits. Just open the page and start converting.
Can I convert PDF to Word or Excel?
Yes. Switch to "From PDF" mode and upload your PDF. Choose from 11 output formats: documents (DOCX, ODT, RTF, TXT), spreadsheets (XLSX, ODS), presentations (PPTX, ODP), and images (JPG, PNG, WEBP). Document conversions use the OnlyOffice engine. Image conversions run in your browser.
Technical Details
Under the hood of PDF Converter
Server-Side Processing
Documents are converted using OnlyOffice Document Server - the same rendering engine used in enterprise document management. Word, Excel, PowerPoint, and ODT files are processed server-side for pixel-perfect PDF output with full font and layout fidelity.
Auto-Deletion Policy
Uploaded files are processed in isolated temporary storage and automatically deleted after conversion completes. No files are retained on the server. The entire pipeline - upload, convert, download - runs through encrypted HTTPS connections.
Client-Side Image Pipeline
Image-to-PDF conversion (JPG, PNG, WebP, AVIF, HEIC) runs entirely in the browser using jsPDF. No server round-trip needed - your images never leave your device. Supports custom page sizes, orientation, and multi-image merging into a single PDF.
From PDF Pipeline
From PDF mode converts PDF to 11 output formats. Document output (DOCX, ODT, RTF, TXT, XLSX, ODS, PPTX, ODP) is processed server-side by OnlyOffice. Image output (JPG, PNG, WEBP) is rendered client-side via PDF.js - the PDF never leaves the browser. Two conversion modes: Preserve Layout (keeps tables, images, and formatting) or Extract Text (clean flowing text, smaller files).
Performance
Image conversion completes in under 1 second client-side. Document conversion averages 3-5 seconds server-side depending on file complexity. All heavy libraries (jsPDF, PDF.js, PDF-lib, JSZip) are lazy-loaded on first user action - zero impact on initial page load.
Font Library
4,000+ fonts installed on the conversion server including all Microsoft Office fonts (Calibri, Arial, Times New Roman, Cambria, and others). Documents render with correct typography without font substitution. Rare custom fonts are matched to the closest available alternative.