PDF Merge

Merge multiple PDF files into one large PDF file

Completely free on-line No restrictions
More than two files must be uploaded, and the file order can be corrected by dragging and dropping
Select File
... or drag and drop files here
How to merge PDF files online

How to merge PDF files online

In just 5 simple steps, you can merge your PDF files online!

  1. Click the Select File button or drag the file to the box above to upload the PDF file
  2. You need to upload at least 2 files, drag the uploaded files, and adjust the merge order of the files
  3. Click the Merge button to merge PDF
  4. Wait a few seconds or minutes, click the download button to download the file
  5. Or you can choose our other PDf tools, such as PDF compression, PDF sharding or water printing

Excellent PDF online merge tool PDF88

  • Completely free PDF merge tool

    Completely free

    Our PDF online merge tool is completely free, without any hidden fees, and requires no registration, payment, login and other cumbersome operations to use directly!

  • PDF online merge is easy to use

    Easy to use

    It only takes five simple steps to merge and sort multiple PDF files without downloading software

  • The Best PDF Online Consolidation Platform

    Best PDF Merge Online Tool

    You can upload multiple PDFs and merge them together. By simply dragging and dropping, you can modify the merge order without any quality loss

  • Fast merging speed

    Superior performance

    Dozens of megabytes and hundreds of pages of PDF files can be merged in seconds without waiting for a long time

  • PDF merge is safe


    Our server does not save any of your data. After processing, it will be deleted immediately. You need to upload it again next time

  • Leading technology

    Leading technology

    The industry-leading PDF technology solution has no loss of quality after PDF merging, and it has rich functions. More functions are waiting for you to unlock

Online PDF compression FAQ

  • Is your online PDF merge tool free?

    you 're right! All tools of PDF88, including online merging tools, are free of charge.

  • How do you merge PDF?

    We will open your uploaded PDF files in turn, extract the information of each page
    sort the files according to the order you adjust
    merge all PDF pages, and re render them into new PDF files

  • How is the order of merged PDF files set?

    The merged PDF files are merged according to the order of dragging in the upload area above, and what you see is what you get!

  • Can merged PDF files be reordered, compressed, or edited?

    of course! You can use our PDF reorganization, compression, page number addition and other tools to re optimize all merged PDF tools, including online merge tools, for free.

  • Is your online merge tool secure?

    PDF88 attaches great importance to the data security of users. Security makes us first consider and focus on safeguarding! All data transmission channels are encrypted with SSL256, and others cannot steal the data data.
    After processing, we will delete your files from the server immediately! Instant transfer and use, each PDF processing is a one-time use