PDF Tools

Merge PDF

Combine several PDF files into one document in the order you choose. Files are merged in your browser and never uploaded.

Add two or more PDFs, put them in the order you want and download one combined file.

Drag & drop PDF files here, or click to choose

Choose two or more PDFs. They are merged in your browser and never uploaded.

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Bookmarks and form fields from the original files may not carry over; the pages themselves are copied exactly.

Combine PDFs Without Uploading Them

Merging puts the pages of several PDF files into one document, one file after another. It is the quickest way to send a single attachment instead of five, or to put an application form, ID proof and certificates into the one file a portal asks for. This tool does the work in your browser, so the documents never leave your device.

How to Use It

Drop two or more PDFs on the box, or click it to choose them. You can add more files at any time.
Use the up and down arrows to put the files in order, and the cross to remove one.
Click Merge PDFs. The combined file downloads as merged.pdf.

Tips

Need only some pages of a file? Take them out first with Split PDF, then merge.
Want to change the order of individual pages after merging? Use Reorder PDF Pages.
If the merged file is too big for an upload limit, run it through Compress PDF.
Photos of documents can be turned into PDF pages first with JPG to PDF.

Limitations

Pages are copied exactly, but bookmarks (the outline panel) from the original files are not carried over, and two files with form fields of the same name may clash. Password-protected PDFs cannot be opened until the password is removed in the program that set it. Very large files are limited by your device's memory; on a phone, merge a few at a time.

Frequently Asked Questions

No. The files are read and merged by JavaScript in your browser, and the combined PDF is saved straight to your device. Nothing is sent to Byteary.

There is no fixed limit. Each file can be up to 150 MB, and the practical limit is your device's memory. On a phone, merge a handful of files at a time.

No. Pages are copied exactly as they are, with no re-compression, so text stays sharp and selectable.

Not directly. Remove the password in the app that set it (or print to a new PDF if you are allowed to), then merge the unlocked copy.