Merge PDF Files Online

There is no hard limit. The tool will warn you if the total size exceeds 200 MB, since very large files can be slow on low-memory devices — but it will still try. For most everyday use (contracts, reports, invoices), you will never hit any practical limit.

Yes — the pages in the merged PDF follow the order shown in the file list. Use the drag handle (⠿) to reorder files before merging. The file at the top becomes the first section of the merged document.

Not currently. If a PDF is encrypted with a password, the tool will show a "Password-protected" error for that file and skip it. You can remove the password in your PDF viewer (File → Print → Save as PDF) and then retry.

No. This tool is entirely browser-based — your files never leave your device. There is no upload, no cloud storage, and no server involved. The moment you close the tab, the files are gone.

As many as your browser can handle. There is no file-count limit. In practice, merging 10–20 typical documents is instant. Very large batches (50+ files, each many MB) may take a few seconds on older devices.

Open this page in Safari on iOS. Tap the drop zone and choose your PDFs from the Files app — you can pick multiple files in one go by tapping each one. Use the drag handles to reorder them, then tap Merge PDF. The combined file downloads to your Downloads folder in Files. No app installation, no iCloud upload, no sign-up needed. Works on any iPhone or iPad running iOS 14 or later.

Each PDF contains its own page tree, font table, and cross-reference index. When files are merged, pdf-lib (the library this tool uses) rebuilds a new unified document structure, which occasionally adds a small overhead. The main cause of a large merged PDF, however, is that the source files themselves are large — especially scanned documents with high-resolution images. After merging, run the result through the Compress PDF tool to remove redundant data and reduce the file size by 20–60%.

Yes. There is no restriction on mixing PDF types. A scanned PDF is just a PDF where each page is an embedded image, while a typed PDF contains real text and vector graphics. Both work the same way — the merger simply copies all pages in the order you specify. The resulting PDF will contain both image-based and text-based pages, and you can continue reading, printing, or compressing it normally.

This tool merges whole files and lets you reorder those files before merging. It does not currently support selecting specific page ranges from within a file or deleting individual pages. If you need to remove pages before merging, open the PDF in your system viewer first (Preview on Mac, Adobe Reader, or a PDF printer), print only the pages you want to keep as a new PDF, then bring that trimmed file into the merger.

Download each monthly statement as a PDF from your bank's portal. Open this page, drop all the statement PDFs in at once, then drag them into chronological order — earliest month at the top. Click Merge PDF. You will get a single file with all months in sequence. Banks and lenders typically want 3–12 months of statements; this tool handles any number in one pass. Because your bank statements contain sensitive financial data, the fact that no file leaves your device is particularly important here.