Sometimes you need to send several PDFs — a contract, a portfolio, a set of application documents — as one combined file. You can merge them straight in your browser without installing anything. This guide also covers reordering pages and removing the ones you don't need.
When you need to merge PDFs
- Submitting a resume, cover letter, and portfolio as one file
- Combining several scanned pages (front and back of a document, for example) into one file
- Pulling meeting materials or a report that arrived as separate chapter files into a single document
How to merge PDFs with Dagochim
- Open the Merge & Split PDF tool.
- Drag in all the PDF files you want to combine at once.
- Drag items in the list to put them in the order you want. If a file has pages you don't need, remove that file or pick out individual pages instead.
- Click Merge to build one PDF and download it.
The same tool also works in reverse — you can split one PDF into several, picking specific page numbers to pull out just the section you need.
Alternatives: built-in Windows and Mac options
Windows has no native way to merge PDFs directly. Selecting several PDFs in File Explorer and printing them doesn't combine them into one file either, so on Windows alone you'd normally need a separate free program.
Mac can merge PDFs with the built-in Preview app. Open the PDFs in Preview, turn on the thumbnail sidebar, then drag a page from one PDF's window into the first PDF's thumbnail list to combine them. Finish with File > Save. This gets tedious with many files or many pages.
Common problems
- Pages come out in the wrong order: files are usually merged in upload order, so name your files with numeric prefixes (01, 02, ...) before uploading to keep things straight. You can also drag to reorder right inside the tool.
- The merged file is too big: combining several scanned files adds up fast. Run the result through Compress PDF afterward to shrink it.
- Some files are password-protected: unlock or enter the password to open them, re-save, then merge.
Is my data safe?
Yes. Dagochim's merge tool never uploads your files to a server — everything happens inside your browser. Contracts and documents with personal information never leave your device.
Worth checking before you merge
Before merging, click through each PDF once to make sure page orientation (portrait/landscape) isn't mixed. A scanned document that's upside down or sideways can be hard to read once it's combined with the rest. Preview the pages in the tool first, rotate anything that needs it, then merge.
Pulling out just the pages you need
Sometimes you don't want a whole file — just a few pages to slot into another PDF. Say you only need page 3 out of a 20-page packet: open that PDF, keep only the page you need and remove the rest to create a small PDF, then merge that result with your other file. Dagochim lets you switch between merging and splitting on the same screen, so this isn't a hassle.
Naming your submission file
Once everything's combined, give the file a clear name. "Document(1).pdf" tells the recipient nothing; "JaneDoe_Resume_Portfolio.pdf" makes it obvious at a glance what they're opening and easy to file correctly. Dagochim lets you type the filename right before downloading.
Can I merge PDFs in the cloud too?
Google Drive and Adobe's online tools can merge PDFs as well, but they require uploading your files to a server first. For sensitive paperwork like contracts or ID scans, a tool that processes everything locally, without uploading, is the safer choice. Since Dagochim works entirely inside the browser, your files never leave your computer.
If your PDFs arrived in a zip file
It's common to get several PDFs bundled inside a zip attachment. Extract them first, then upload the extracted files to the merge tool. On Windows, right-click the zip and choose Extract All, or use Dagochim's own Unzip tool right in the browser.
After merging, it's good practice to count the total page number once to double check nothing got skipped or duplicated by mistake.
Merging for job applications and official submissions
Many employers and online application systems ask for a single combined file rather than separate attachments for your resume, cover letter, and portfolio. Reviewers often skim quickly, so a single well-ordered PDF — resume first, cover letter second, portfolio or work samples last — makes a noticeably better impression than three separate attachments they have to open one by one. Put your most important document first, since that's the one most likely to actually get opened.
Keeping a source folder as you go
If you expect to merge documents repeatedly (quarterly reports, recurring paperwork, a growing portfolio), it helps to keep the individual source PDFs in one folder with a consistent naming scheme. That way, whenever you need an updated combined file, you can quickly re-merge just the files that changed instead of hunting them down from scratch each time. This also makes it easy to swap out one outdated page without rebuilding the whole document from the beginning.
Double-checking page orientation after merging
Even after you've checked individual files beforehand, it's worth scrolling through the final merged PDF once from start to finish before sending it. Occasionally a page that looked fine on its own ends up oriented differently once it's combined with pages from another source file, especially when the original documents came from different scanners or apps. Catching this before you send it saves you (and the recipient) an awkward follow-up email.
Frequently asked questions
Is there a limit on how many files I can merge?
There's no hard limit. With a lot of large files, your browser may slow down since everything runs in memory.
Can I reorder pages after merging?
Yes, before merging you can drag files into any order on the list screen. After merging, use the split/organize tool to rearrange pages.
Can I merge scanned image files too?
This tool is PDF-only. To merge JPGs or other photos into a PDF, convert them to PDF first, then merge.