Combine multiple PDF files into a single document. Drag to reorder, then merge — all processed locally in your browser.
Drop PDF files here
or click to browse • Max 20 files, 50MB each
Merge multiple PDF files into a single document in seconds
Drag and drop to arrange your PDF files in the right order
Download your merged PDF immediately — no email or signup required
Combine invoices, chapters, scans, and reports into a single PDF. Reorder files before merging and download instantly.
Merge PDF Files Online is designed for everyday tasks where speed and simplicity matter. Whether you are handling a single file or working through a batch, ConvertMastery keeps the workflow straightforward with clear settings and instant downloads.
Combine monthly statements. Merge scanned pages into one file. Build a portfolio PDF from multiple sources. These are among the most common reasons users choose this tool on ConvertMastery.
For the best outcome, start with a high-quality source file when possible. If you are preparing images for the web, consider converting to WebP or compressing after conversion. For documents, review the output before deleting originals. When privacy matters, prefer settings that strip metadata and use browser-based processing when available.
ConvertMastery is updated regularly to support modern formats and browsers. If you need help, visit our documentation guide or browse related tools linked below. Free account sign-up unlocks advanced options and My Orders for saving results.
Input: PDF. Output: single merged PDF.
ConvertMastery processes files locally in your browser whenever possible. Your images, documents, and media are not uploaded to our servers for conversion or compression. This privacy-first approach keeps your data on your device and reduces exposure to third parties.
Multiple files are supported; very large batches depend on browser memory.
Yes. Drag files to change order.