How to Merge PDF Files Online for Free

How to Merge PDF Files Online for Free

Merging PDF files is one of the most common document tasks. Whether you're combining contracts, merging chapters of a report, or assembling a portfolio — PDFKiller lets you do it in seconds, entirely in your browser.

Why Merge PDFs?

• [object Object] — No need to print and scan physical copies
• [object Object] — Keep related documents in a single file
• [object Object] — One file is easier to send than multiple attachments
• [object Object] — A single merged PDF looks cleaner in email

How to Merge PDFs with PDFKiller

**Step 1:** Go to PDFKiller's [Merge PDF](/merge-pdf) tool.

**Step 2:** Click the upload zone or drag and drop your PDF files. You can select multiple files at once.

**Step 3:** Arrange the files in the order you want them merged. The first file will appear first in the final document.

**Step 4:** Click "Merge PDFs" and wait a few seconds.

**Step 5:** Download your merged PDF. That's it — no watermarks, no limits.

Tips for Merging PDFs

• [object Object] before merging — the tool processes files in the order shown
• [object Object] are handled in your browser, so your data never leaves your device
• [object Object] will be preserved as-is in the merged document
• [object Object] merge best; mixing scanned and digital PDFs may look inconsistent

Why Use PDFKiller Instead of Software?

Most PDF merging software requires: - Downloading and installing an app - Creating an account - Paying for premium features

PDFKiller works on any device — Windows, Mac, Linux, even your phone — with zero setup.