TOOLNIVO / PDF
Merge PDF
Put multiple PDF files together in the order you choose.
Ready to get started?
Open the ad-free workspace to use this tool. Your files and entries stay separate from advertising on this introduction page.
Open Merge PDFJoin PDF documents in order
Merge PDF copies the pages from each selected PDF into a new document. Each file contributes all of its pages, in their original internal order. The file list controls which document comes first.
How to merge PDF files
Choose at least two PDFs and review their page counts. Drag files into order or use the movement buttons. Select Merge PDFs, download the result and check the boundaries between documents. Use Split PDF first if you only want certain pages from a source.
Preserve page content with clear limits
The tool copies PDF pages rather than converting every page to an image. Page dimensions and ordinary selectable text can be retained. It does not promise preservation of bookmarks, interactive forms, attachments, document-level accessibility structure or digital signatures. Check complex documents before relying on the merged copy.
MERGE PDF
Common questions.
Are password-protected PDFs supported?
No. Encrypted, password-protected or damaged PDFs are rejected. Export an unencrypted copy from an application you are authorized to use before selecting it here.
What are the size limits?
Select up to 20 files, up to 30 MB each, with no more than 100 MB total and 500 combined pages. Large documents can still exceed device memory.
Can I change page order within one PDF?
This tool reorders whole files. Split PDF can export specific pages in the order you enter, which can then be merged with other documents.
Do files leave my browser?
The application reads and merges them locally. It downloads PDF code from this site when needed, but sends no document-upload requests.
Related tools
Merge PDF guides.
All 5 guidesHow to merge PDF files in your browser
Merge PDF documents locally, arrange whole files in order and check the combined page count before downloading a single document.
Read the guide ↗Put PDF files in the correct order before merging
Arrange source PDFs before combining them, distinguish file order from page order and verify the boundaries between documents in the merged result.
Read the guide ↗Merge PDFs while keeping ordinary text selectable
Understand how page copying differs from image conversion when merging PDFs, and check selectable text without assuming every document feature survives.
Read the guide ↗Fix PDFs that will not merge
Troubleshoot merge failures by checking encryption, damaged files, file-size limits and the total number of pages before retrying with a smaller set.
Read the guide ↗Combine selected pages from different PDFs
Use Split PDF and Merge PDF together to combine only the pages you need from several documents, with a clear selection and verification workflow.
Read the guide ↗