Free PDF Combiner
Merge multiple PDFs in your browser. See page counts, reorder files and download one combined PDF. Limit: 10 MB per file and 50 MB total.
Choose and arrange PDFs
Drop 2–30 PDFs here or use Choose Files. 10 MB per file, 50 MB total and 500 pages total.
Merge and download
Files merge in the displayed order. Pages within each file keep their order and dimensions. Encrypted or damaged files must be removed or replaced before merging.
Choose at least two PDF files.
How to use the PDF Combiner
- Choose or drop at least two PDFs. Wait for page counts; every file must pass validation.
- Use Up and Down to arrange documents, or Remove to exclude a file.
- Merge PDFs and download the result. Check the resulting pages before sharing it.
Practical example
Place a two-page proposal above a one-page appendix to produce a three-page combined document.
Plan your document workflow
Read the image and PDF preparation guide to choose the order of compression, conversion and merging and check the final output.
What inputs and outputs are supported?
| Input and limits | 2–30 unencrypted PDF files; 10,000,000 bytes each; 50,000,000 bytes total; 500 pages total |
|---|---|
| Output | One PDF in file order, preserving each file’s page order and page sizes |
Limits, assumptions and troubleshooting
Encrypted, damaged and unreadable PDFs are rejected with an explanation; they are never silently skipped. Remove protection in software you are authorized to use, then try an unencrypted copy. Page content and dimensions are copied; signatures, bookmarks, interactive forms, attachments and document-level metadata are not guaranteed to survive merging. Digitally signed documents must be signed again after editing.
Is my data private?
Input processing and output creation run on your device. This tool does not upload inputs, filenames or outputs, and analytics are disabled. The page loads normal website styles and fonts. Reset releases the current work; download a copy before leaving. This tool does not persist your input in browser storage.
Provided by Toolcross. Read our privacy policy or contact us with a reproducible issue. Updated .
Frequently asked questions
Is merging PDFs free?
Yes. No account or payment is required. Choose at least two supported PDFs within the published limits and download the merged result.
Are my PDFs uploaded?
No. Page parsing and merging run locally; the generated PDF exists in browser memory until you download or reset.
What does MB mean here?
The enforced limits are decimal: 10 MB is 10,000,000 bytes and 50 MB is 50,000,000 bytes.