PDF Merger
Combine multiple PDF files into one document in your browser. Drop your PDFs below, arrange the order, and download the merged result. No file is ever uploaded — everything runs locally with pdf-lib.
100% client-side · no upload · no signup
How to merge PDFs
- Drop two or more PDF files into the upload area, or click to browse and select them.
- Review the file list. Click the ✕ next to any file to remove it from the merge.
- Click Merge PDFs — processing completes in seconds.
- Click Download merged.pdf to save the combined document.
Related PDF tools
Common uses
- Combine PDFs online without uploading
- Merge two PDFs — cover + body, front + back
- Join PDF files on Mac without Preview's fiddly sidebar
- Combine scanned documents into one PDF
- Merge Word documents exported as PDF
Preguntas frecuentes
- How many PDFs can I merge at once?
- There is no hard limit. You can merge as many PDFs as your browser can load into memory simultaneously. Most devices handle dozens of files without issues.
- Is the file order preserved?
- Yes. Files are merged in the order they appear in the list. You can remove and re-add files to control the order.
- Are bookmarks and links preserved?
- Page content, images, text, and links are preserved. Top-level document bookmarks from individual files are not merged into a combined bookmark tree in this version.
- Can I merge password-protected PDFs?
- No. Remove password protection from the PDF first using your PDF reader's security settings, then merge here.
- Does this work on iPhone?
- Yes. Use Safari on iPhone or iPad, tap the upload area, and select PDFs from the Files app or iCloud Drive.
- What is the output file format?
- The merged output is a standard PDF 1.7 file compatible with all PDF readers including Adobe Acrobat, Preview, and Chrome's built-in viewer.