Merge PDF Files Online
Combine multiple PDF files into one document. Free, no uploads, no file size limits. Works entirely in your browser with PDF.js and jsPDF.
How to Use — 3 Simple Steps
Upload your PDFs
Select multiple PDF files at once. They appear listed in selection order.
Arrange order
Files merge in the order shown. Re-upload in desired sequence if needed.
Merge & download
Click 'Merge All PDFs' and download your combined PDF file in seconds.
Why Use SiteConversor?
Unlimited Files
Combine 2, 5, or 20 PDF files — no limit on number of files or total pages.
100% Private
PDFs processed locally with PDF.js and jsPDF. Nothing uploaded to any server.
Fast
Merging happens on your device — no upload or download wait time.
Cross-platform
Works on Windows, macOS, Linux, Android and iOS in any modern browser.
About This Tool
Combining multiple PDFs into one document is common in professional and academic contexts: job applications combining CV and cover letter, project reports from multiple authors, scanned multi-page forms, or monthly bank statements into an annual archive.
Most solutions require installing software or uploading files to a cloud service — both with drawbacks. SiteConversor merges PDFs entirely in your browser with zero uploads.
The technical approach uses PDF.js to render each page as a high-resolution canvas image, then assembles them with jsPDF. This ensures visual fidelity — every chart, image, and text block appears exactly as in the original.
Upload your PDFs in the exact order you want them in the final document. The tool processes files sequentially in list order. To change sequence, clear the list and re-upload in the correct order.
Frequently Asked Questions
How many PDFs can I merge? expand_more
No hard limit. Merging 20 files × 10 pages (200 total pages) typically takes under 30 seconds on modern hardware. Very large merges (500+ pages) need more RAM and time.
Will merging change my PDF content? expand_more
The merge renders each PDF page as a high-quality image and assembles them into a new PDF. Text becomes image content (not selectable). For text-layer-preserving merge, desktop tools like PDFtk are better.
Can I reorder pages before merging? expand_more
Upload files in the exact sequence you want them merged. To control individual page order, use the 'Extract Pages' tool first.
What happens to images and graphics? expand_more
All visual content — images, charts, formatted text — is preserved faithfully because each page renders as a high-resolution image.
Can I merge password-protected PDFs? expand_more
No. Unlock them first in your PDF viewer (enter password, re-save as unlocked) before merging here.
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