Merge PDF
Merge Multiple PDF Files Online for Free in Seconds
Drag and Drop PDF files here
Fast, 100% private in-browser processing. Your files never leave your device.
Combine multiple PDF documents into a single organized file in seconds. Drag and drop files, reorder pages intuitively, and merge them with zero uploads and complete privacy.
How to use Merge PDF
Upload Files
Drag and drop two or more PDF files into the tool or browse from your device.
Arrange Order
Drag thumbnails to arrange files in the exact sequence you want them to appear.
Merge Instantly
Click 'Merge PDF' to combine documents locally and download your new merged file.
Key Features & Capabilities
Lightning Fast Browser-Based Merging
Merging happens instantly using local browser memory. Avoid waiting for slow cloud uploads and server rendering queues.
Zero-Upload Privacy Guarantee
Your files never leave your computer or phone. Perfect for confidential contracts, financial records, and private documents.
Lossless Output Quality
All vector graphics, embedded fonts, and high-resolution images are preserved with pristine fidelity.
Cross-Device & Offline Support
Works seamlessly on Chrome, Safari, Firefox, Edge, iPhone, Android, and desktop operating systems.
Frequently Asked Questions
Is merging PDFs free?
Yes. OM PDF merges files for free with no sign-up, no hidden fees, and no watermarks.
Do my files get uploaded to a server?
No. Merging happens entirely inside your browser sandbox. Files never leave your local device.
Can I reorder pages before merging?
Yes. Drag and drop document cards or thumbnails to arrange the exact page sequence before merging.
Is there a file size limit?
There is no server limit. You can merge large documents up to several hundred megabytes depending on your device's memory.
Will the merged PDF keep its original quality?
Yes. Text clarity, vector graphics, and image resolutions are preserved without re-compression.
Can I use OM PDF offline?
Yes. OM PDF works offline as an installable PWA once loaded in your browser.
🔒 100% Client-Side Privacy Guarantee
OM PDF processes all documents entirely in your web browser memory using WebAssembly. Your files are never uploaded to any cloud server, preventing data leakage and guaranteeing total security for confidential documents.