How to Merge PDF Files Online for Free: Combine PDFs in Seconds

What does it mean to merge PDF files?

To merge PDF files means to join two or more PDF documents into a single file. The pages keep their text, images and layout, and they appear one after another in the order you choose. The original files are not changed, so you still have the separate versions if you need them.

People also say combine PDF files, join PDFs or append PDFs. They all mean the same thing.

How to merge PDF files online for free

An online PDF merger is the fastest option because there is nothing to install. The steps are simple:

• Step 1: Add your PDF files. Click the button to choose your files, or drag and drop them into the tool. You can add several PDFs at once.
• Step 2: Put them in order. Arrange the files in the order you want the pages to appear. Move a file up or down, or remove one you added by mistake.
• Step 3: Merge. Click the merge button and wait a moment while the files are combined into one document.
• Step 4: Download. Download the merged PDF and open it to check that every page is in the right place.

Merge PDF without software on any device

You do not need Adobe Acrobat or any paid program to combine PDF files. A browser-based tool works on every device that has a modern browser.

• Windows. File Explorer has no simple built-in way to merge PDFs, so an online merge tool is the quickest option.
• Mac. The Preview app can combine PDFs by dragging pages into the sidebar, but an online tool is faster when you have many files.
• Android and iPhone. Open the merge PDF page in your mobile browser, choose your files from the phone storage and download the result.
• Chromebook and Linux. A web tool works the same way, because everything happens in the browser.

When do you need to combine PDF files?

• Job and visa applications. Join your CV, cover letter, certificates and ID copies into one file, as many portals allow only a single upload.
• Invoices and reports. Combine monthly invoices or reports into one document for your accountant or manager.
• Study material. Merge lecture notes, assignments and reading lists so everything is in one place.
• Scanned documents. Phone scanners often create one PDF per page. Merging them gives you a single clean document.
• Contracts and forms. Put the main agreement and its attachments together before you send it for signing.

Tips for a clean merged PDF

• Name your files in order. Rename files with numbers such as 01, 02 and 03 before you add them, so the order is easy to check.
• Check page sizes. Mixing A4 and Letter pages is fine, but the merged document will show different page sizes.
• Keep the size in mind. The merged file is roughly as big as all the files added together. If it is too large for email, compress the images or reduce the number of pages.
• Review before sending. Scroll through the merged file once to make sure no page is missing, upside down or in the wrong place.

Combining images and PDFs

Sometimes your pages are photos or screenshots instead of PDFs. In that case, convert the images to PDF first with a JPG to PDF tool, then merge the new PDF with your other files. This is a common way to build one document from scans, photos of paper forms and exported files.

Common problems and how to fix them

• Password-protected PDF. Most mergers cannot read a locked file. Remove the password in the program you used to create it, then try again.
• File is too large. Compress the images inside the PDF or split the work into two smaller documents.
• Pages in the wrong order. Move the files in the list before you merge, and merge again from the original files.
• Corrupted or damaged PDF. Open the file in your browser first. If it does not open there, export or save it again from the original program.
• Scanned text cannot be selected. Merging does not change the content. A scanned page stays an image unless you run text recognition on it.

Merge your PDFs now

Our merge PDF tool combines as many files as you add, in the order you choose. It is free, needs no signup and works in your browser, so your documents are not uploaded to a server.

Frequently asked questions