Merge PDF files online


You can select one or more PDF files
Max upload size (for all files): 200MB. All uploaded files are automatically deleted 1 hour after upload.

When local processing is enabled, files are processed in browser without uploading to a server. Some features may be limited. If you experience issues, leave this unchecked.

Combine Multiple PDFs Into a Single Document

Need to hand in one file instead of five? This tool takes multiple PDF documents and joins them end-to-end into a single file. Each source PDF keeps its own page sizes, orientation, and formatting — nothing gets rescaled or reformatted. The merged result is a standard PDF that works in any viewer.

How It Works

  1. Upload your PDFs — select multiple files at once, or add them one at a time. There's no limit on the number of files.
  2. Arrange the order — drag and drop the thumbnails to put the documents in the sequence you want. The first file in the list becomes the first pages of the merged PDF.
  3. Skip files you don't need — changed your mind about including a document? Click “skip” to exclude it without re-uploading everything.
  4. Click “Merge PDFs!” — the combined document is ready to download in seconds.

When Is This Useful?

  • Assembling reports — combine a cover page, table of contents, and individual chapters that were created separately.
  • Job applications — join your resume, cover letter, and reference letters into one file before submitting.
  • Collecting signed documents — merge individually signed pages back into the original document.
  • Organizing scans — if you scanned a multi-page document in batches, merge the resulting PDFs into a single file.
  • Combining invoices or receipts — create a single expense report file from multiple PDFs.

Good to Know

  • Pages with different dimensions (for example, mixing US Letter and A4) are kept at their original sizes. If you want to standardize all pages to a single paper size after merging, pass the output to Resize PDF.
  • All vector text, fonts, and embedded images from each source PDF are preserved without re-encoding or quality loss.
  • If the combined file is too large for email or upload, run it through Compress PDF afterward.

Looking for other PDF tools? Split PDF to extract pages, Rotate PDF to fix page orientation, Crop PDF to trim margins, Resize PDF to change paper size, or convert PDFs to images with PDF to JPG and PDF to PNG.