Merge PDF Files

Why merge PDFs in your browser instead of uploading them?

Most free PDF tools work by uploading your file to their servers, processing it there, and sending the result back — which means your document, even briefly, sits on someone else's infrastructure. This tool uses in-browser processing instead: the merge happens using your own device's processing power, so your files never leave your computer.

How free PDF tools typically limit you

Tool	Free daily limit
Smallpdf	2 tasks per day
iLovePDF	Soft hourly limits
Sejda	3 tasks per hour, 50 pages max

This tool has no artificial daily task counter — merge as many times as you need.

Tips for merging PDFs

• Add files in the order you want them to appear, or use the reorder arrows afterward.
• Very large files (100+ MB) depend on your device's available memory, since processing happens locally rather than on a powerful server.
• Double-check the final page order in the merged file before sharing it.

Frequently asked questions

Are my PDF files uploaded to a server? No. The merge happens entirely inside your browser using your device's own processing power. Your files never leave your computer.

Is there a limit on file size or number of files? There's no artificial daily task limit like many competing tools impose on free users. Practical limits depend on your device's available memory for very large files.

Can I reorder the pages before merging? Yes — use the up and down arrows next to each file to change the order files are combined in before merging.

Will the merged PDF have a watermark? No watermark is added to the output file.

How to merge PDF files into one document

1. Click the upload area or drag two or more PDF files onto it.
2. Review the list of files and put them in the order you want them to appear.
3. Click Merge & Download.
4. Save the combined PDF. Everything is processed on your device and never uploaded.

What merging actually does

Merging copies the pages of each PDF, in order, into one new document. Text, images and layout on every page are preserved, and the page order inside each original file stays the same. Because the work happens in your browser, even confidential contracts or financial statements never leave your computer.

When merging PDFs is useful

• Combining an application form with supporting documents into one attachment.
• Joining chapters or scanned sections into a single report.
• Putting invoices, receipts and statements together for accounting or expense claims.
• Building one file to print instead of sending several jobs to the printer.

Tips before you merge

• Name your files so they sort in the order you want; it makes the list easier to arrange.
• Merge pages of the same size where possible, so the final document looks consistent.
• Need only part of a file? Use Split PDF to pull out the pages first.
• Combining photos? Convert them with JPG to PDF and merge the results.

More questions

Will bookmarks or form fields survive? The pages are combined into a clean document. Features that depend on the original file, such as bookmarks or interactive forms, may not carry over, so check the merged file if you rely on them.

Can I sign the merged document? Yes. Open the combined file in Sign PDF to add your signature.

Does merging make the file smaller? No. The merged file is roughly the sum of the originals. To reduce size, compress the source images or scans before building the PDF.