Key takeaways
- Open Merge PDF, add your files, drag them into order and download one combined PDF.
- You can choose which pages to take from each file, so cover pages and blanks can be left out.
- Merging runs in your browser. Your files are not uploaded.
- If a PDF is password protected, remove the password first with Unlock PDF.
Merge PDFs in five steps
Putting several documents into one PDF is the easiest way to send a contract pack, a set of receipts or a report with its appendices. You do not need to install anything. Here is the full process with Merge PDF:
- Open Merge PDF and add your files. You can pick them from your device, and you can add more than one at a time.
- Check the first-page previews so you know which file is which.
- Drag the files up or down until the order is exactly what you want.
- If you only need some pages from a file, choose those pages and leave the rest out.
- Press merge, then download the combined PDF.
Get the order and the pages right
Most mistakes happen before the merge, not during it. A few habits save a lot of re-doing:
- Name files so they sort naturally. Adding 01, 02, 03 to the start of each file name makes the order obvious.
- Remove pages you do not need. If a scan has a blank back page or a fax cover sheet, leave it out when you pick pages.
- Merge in the final order. It is faster to arrange files once than to merge twice.
If you realise afterwards that one file should come earlier, you can simply run the merge again from the original files. Your originals are never changed.
Merge PDFs on your phone
The tool works in a normal phone browser. Open the page, tap to add your PDFs, arrange them and merge. There is no app to install, so it works on both Android and iPhone browsers.
If your files are in a messaging app or email, save them to your phone first so you can pick them from the file chooser.
Common problems and quick fixes
| Problem | What to do |
|---|---|
| A file will not open for merging | It may be password protected. Remove the password with Unlock PDF, then try again. |
| The merged file is too big to email | Run it through Compress PDF after merging. |
| Pages are in the wrong order | Reorder the files and merge again, or fix the page order with Organize PDF. |
| You want to send only part of the result | Use Split PDF to extract just those pages. |
Bookmarks and fillable form fields from the original files may not carry over to a merged document, so check the result if you rely on them.
Real situations where merging saves time
- A job application pack: cover letter, CV and certificates in one file, in the order the employer expects.
- An expense claim: a form plus every receipt, so the finance team opens one attachment.
- Study notes: chapters saved as separate PDFs, combined before you print or revise.
- A contract bundle: the agreement, its appendix and the signed page in a single document.
- A tender or visa file: all required documents as one PDF when a site accepts only one upload.
In each case the aim is the same: one clean, correctly ordered file that is easy for the other person to open. If that file has to stay under a size limit, read How to compress a PDF for email and applications.
Merge, split or organize: which tool do you need?
| You want to | Use |
|---|---|
| Join several files into one | Merge PDF |
| Pull some pages out of one file | Split PDF |
| Put the pages of one file in a different order | Organize PDF |
| Remove pages you do not need | Delete PDF Pages |
| Fix pages that are sideways | Rotate PDF |
A common workflow is to rotate or delete pages in each file, merge them in order, and finish by compressing the result. On a phone, follow How to merge PDF files on iPhone and Android.
Frequently asked questions
Is it safe to merge PDFs online?
With Merge PDF the merging happens in your browser and the files are not uploaded, so they stay on your device.
Does merging lower the quality of my PDF?
No. Pages are copied into the new file instead of being turned into pictures, so text stays sharp and selectable.
How many PDFs can I merge at once?
Toolkitties does not set an account limit. The practical limit is your device memory, because the work is done in your browser.
Can I merge PDFs on my phone?
Yes. Merge PDF works in a phone browser. Save your files to the phone first, then pick them from the file chooser.