Merge PDF Files

Combine local PDF documents in the order you choose. Inspect page counts, move documents and download one merged PDF.

When to use this tool

• Combine local PDF documents in the order you choose. Inspect page counts, move documents and download one merged PDF.

How to use

1. Choose two to eight PDF files and wait for page counts.
2. Move documents up or down into the desired order. Read the compatibility warning.
3. Merge and download the new PDF. Review it in a trusted PDF reader.

Examples

Input: A.pdf (2 pages) + B.pdf (1 page), move B up

Result: One PDF: B1, A1, A2

Before you start

• Processing is designed to run in this browser without uploading PDF bytes or filenames. Files stay in memory while this page is open and are not saved by this tool. Use Clear to release the selection and results. No PDF preview or script execution.
• Limits: 8 files, 10 MiB each, 25 MiB total input/output, 200 pages per document, 300 input pages total, 10 output files and 20 seconds per task. Merge needs at least 2 files. Basic PDF 1.0–1.7 only; encrypted, malformed or detected unsupported files are rejected.
• Before processing: copied pages can lose or change forms, signatures, annotations, accessibility tags, outlines, attachments and metadata. Detection of unsupported features is incomplete. Originals remain untouched. This is not lossless editing, signature validation, sanitization or virus removal. Review results in a trusted reader.

Frequently asked questions