Merge PDF Files
Combine PDFs in the order you want. Drag to reorder.
or drop PDFs here
Supports Multiple Files • 100% Local process in your device
How to Merge PDF Files Online
Combine multiple PDF documents into a single file in three simple steps. No software installation, no sign-up, and no file size limits.
Upload Your PDFs
Click Select PDF files to choose from your device, or simply drag and drop multiple PDFs directly onto the upload area. You can add files one by one or all at once — there's no limit on the number of files or their total size.
Arrange the Order Visually
Each uploaded file appears as a thumbnail preview with its name and page count. Simply drag and drop any thumbnail to rearrange the sequence — the final merged PDF will follow your exact order. Need to remove a file? Click the red trash icon in the top-right corner of any thumbnail. You can also click "Add Files" at any time to include more PDFs.
Merge & Download
Click the green Merge PDF Files button. Your combined document is generated instantly in your browser. Once complete, you'll see the total page count and file size of the merged PDF. Click Download to save it to your device — or explore other tools like Compress, Watermark, or PDF to Image for further editing.
Why Choose CedarPDF for Merging?
We built CedarPDF to solve the frustrations of traditional PDF mergers. Here's what makes us different:
Visual Drag & Drop Control
No more guessing the order. Each file is shown as a thumbnail preview, so you can see exactly what you're combining. Drag thumbnails to rearrange, click the red trash icon to remove unwanted files, and add more files at any time — all with a simple, intuitive interface.
100% Private & Secure
Your files never leave your device. All merging happens locally in your browser using open-source PDF libraries. There is no server upload, no data collection, and no risk of leaks — ideal for sensitive documents like contracts, financial reports, or legal papers.
Truly Unlimited & Free
No daily limits, no file size caps, no "premium" upsells. Merge as many PDFs as you need, as often as you want, forever. This is a non-profit project — we believe essential digital tools should be accessible to everyone.
Lossless Quality, Zero Watermarks
Merging is a lossless operation — we simply combine existing pages without re-compressing images or altering text. The result is identical in quality to your originals, with no watermarks, no ads, and no branding.
Lightning Fast
No uploading to slow remote servers. Merging happens instantly in your browser, limited only by your device's speed. Even large documents with hundreds of pages are combined in seconds.
Works on Any Device
CedarPDF runs in any modern browser — Windows, Mac, Linux, iPhone, iPad, or Android. No software installation, no plugins, no account creation. Just open the website and start merging.
When Do You Need to Merge PDFs?
From students to professionals, CedarPDF helps people from all walks of life combine PDFs effortlessly. Here are some common scenarios:
Submit Complete Assignments
- Combine separate chapters, essays, or research papers into a single submission file.
- Merge your thesis with appendices, references, and supplementary materials.
- Consolidate scanned notes, handouts, and textbook excerpts into one study guide.
- Best of all: It's completely free for unlimited student use!
Streamline Your Documents
- Bundle multiple reports, contracts, or invoices into a single professional package for clients.
- Combine signed agreements with cover letters and supporting documents.
- Merge quarterly financial statements into a comprehensive annual report.
- Best of all: Your confidential business data never leaves your computer.
Handle Everyday Documents
- Travelers: Combine flight tickets, hotel bookings, and itineraries into one travel packet.
- Home Buyers: Merge inspection reports, disclosures, and contracts for closing.
- Job Seekers: Bundle your resume, cover letter, and portfolio into a single application file.
- Best of all: Works perfectly on mobile phones and tablets for on-the-go tasks.
Frequently Asked Questions
Everything you need to know about merging PDFs with CedarPDF.
Can I change the order of files before merging?
Absolutely! This is one of our most-loved features. Once your files are uploaded, each one appears as a thumbnail preview. Simply drag and drop any thumbnail to rearrange the order — the merged PDF will follow your exact sequence. You can also remove any file by clicking the red trash icon in its top-right corner.
Can I add more files after uploading the first batch?
Yes! Click the "Add Files" card at the end of your file list to upload more PDFs. They will be appended to the end, and you can then drag them to any position you like. You can add files as many times as you need before merging.
Is my data safe? Are files uploaded to a server?
Your files never leave your device. CedarPDF processes everything locally in your browser using open-source PDF libraries. There is no server upload, no data collection, and no third-party access. This makes CedarPDF ideal for sensitive documents like contracts, financial records, medical files, or legal papers.
Can I merge password-protected PDFs?
CedarPDF supports merging PDFs that are not encrypted. If your PDF has an "Open Password" (required to view the file), you'll need to unlock it first using a PDF reader. However, we do support PDFs with "Permission Passwords" (restricted editing or printing) in many cases.
Does merging affect the quality of my PDFs?
No. Merging is a lossless operation. We simply combine the existing pages into a new file without re-compressing images, altering text, or changing formatting. The quality of your merged document will be identical to the originals. Text remains searchable, links stay clickable, and images retain their original clarity.
Is there a limit on the number of files or file size?
None at all. Unlike commercial tools that limit you to 5 or 10 files, CedarPDF lets you merge as many PDFs as your device can handle. There are no file size limits, no daily usage caps, and no "premium" tiers. The only constraint is your device's available memory — for best performance, we recommend keeping the total size under 200MB.
Is CedarPDF really free? How do you make money?
Yes, 100% free — forever. CedarPDF is a non-profit project developed by a team in Canada. All team members work voluntarily because we believe essential digital tools should be accessible to everyone. Development and operating costs are kept to a minimum and are entirely covered by voluntary donations. We have no investors, no ads, no data collection, and no plans to introduce paid tiers.
Does this work on mobile devices?
Yes! CedarPDF is fully responsive and works on all modern devices — Windows PCs, Macs, Linux, iPhones, iPads, and Android tablets. The interface automatically adapts to your screen size, with touch-optimized controls for mobile users. Since everything runs in your browser, there's nothing to install — just open the website and start merging.
What happens after I merge? Can I do more with the result?
Absolutely. After merging, you'll see the total page count and file size of your new PDF, along with a download button. Below that, we provide quick access to other useful tools — like Compress (to reduce file size), PDF to Image (to convert pages to JPG/PNG), Organize (to reorder or delete individual pages), Watermark, and more. You can also click Start Over to merge a different set of files.