Merge PDF
Add two or more PDF files, put them in the order you want, and download a single combined PDF. Everything runs in your browser; your files are never uploaded.
Accepted format: .pdf · Up to 40 files · 200 MB total
Your PDF files are processed locally in your browser and are never uploaded. Learn more.
Pages are copied exactly as they are in each source file. A password-protected PDF that needs a password to open can't be merged. Bookmarks, form fields and attachments from the source files are not carried into the combined PDF.
How this Merge PDF tool works
Each PDF you add is read in your browser and its page count is shown. Use the up and down buttons on each row to change the order, and the × button to drop a file from the list. When you merge, every page of every file is copied (in list order) into one new PDF using the pdf-lib library, and that file is offered as a download. Nothing you add or generate here is ever sent to Docspira or anywhere else.
Because the whole job runs in one browser tab, very large or very numerous PDFs are limited so the tab does not run out of memory. The combined PDF keeps the pages and their visual content; interactive extras such as bookmarks, AcroForm fields, and file attachments are not preserved.
Related tools: Markdown to PDF, Compress Image to Target Size.
What this tool does
Combine PDF files into one document in your browser.
How to use
- Select two or more PDF files.
- Use the available controls to put them in the required order.
- Merge the files and download the combined PDF.
File order
Put files in their final order before merging; the output is a new PDF and does not alter the originals.
Privacy
This tool runs in your browser; the text or file you choose is not uploaded for processing. Read the privacy details.