Put files together into one PDF
One document from many parts takes a different route depending on the parts: finished PDFs join directly, photos must become pages first, and single page scans need their order fixed by hand. Find your starting point below and follow its guide.
Start from what sits on your disk
Look at the files you actually have, not the bundle you wish you had. Each row names the first tool to open; everything after that is ordering and checking, which works the same for every row.
| You have | First step | Guide with the details |
|---|---|---|
| Finished PDFs | Join them in Merge PDF | Combining PDF files |
| Photos or screenshots | Turn them into pages first | Combining images |
| Single page scans | Join, then fix the order | Merging scanned documents |
| Word documents | Export each, then join | Merging Word documents |
Two or three PDFs for one upload box is the shortest version of the job, and the small bundle guide keeps it to a minute. Loose pages pulled from several places follow the page packet guide, which checks the bundle against a list before it ships.
Order first, size second, check last
Set the sequence by hand in the tool and trust nothing else. Scanner stamps sort wrong across midnight, phone bursts number out of sequence, and downloads arrive named after someone internal system. The combining walkthrough shows the ordering pass on a board pack, and Organize pages repairs a wrong order afterwards without rebuilding the merge.
Expect the bundle to weigh slightly more than its parts. Each source brings its own embedded fonts, and phone photos arrive at full resolution, because joining copies pages rather than recompressing them. Take the finished file down with Compress PDF, from a 100 KB preset up to an exact cap you type, and the join then shrink guide covers portals with a size limit. Page through the download once at the end: the check belongs on the file that travels, never on the parts.
Mistakes that spoil a bundle
The most common is merging in filename order. Scans named by the hour land shuffled, and one swapped pair stays invisible until a stranger finds it. Read the first line of each scan and set the order from content, not from names.
Next is joining dirty parts. Blank backs from duplex runs, sideways phone shots and a password locked PDF each survive the merge and embarrass the bundle. Clean, turn and unlock the parts first, or pull the blanks in one thumbnail pass right after joining.
Then the bundle nobody asked for. Parts going to different readers, updating on different schedules, or holding a form that must stay fillable on its own usually travel better as several clearly named files. Join for reading order, a report with its appendix or a claim with its evidence, and keep the rest apart.
Short answers about joining PDFs
- Do I join Word files directly?
- No. Export each document to PDF first, then join the exports. The Word merging guide shows that path, including how page numbering survives the trip.
- Why is the joined file bigger than the parts?
- Because joining copies instead of squeezing. Duplicate embedded fonts and full resolution photos add up. Compress the bundle afterwards when a portal caps the size.
- Can I join a locked PDF?
- Only after opening it. Unlock it with the password you know, then join the copy. A file nobody can open cannot join either.
- Do mixed page sizes even out?
- No. Each sheet keeps the size it had, so A4, letter and receipts can sit side by side in one bundle. Evening them out is a separate conversion.
Join files now
Everything happens in this tab. Drop the parts in, set their order by hand, and the single file downloads when the sequence reads right.
Merge PDFJoining guides and tools
- Join a stack of PDFs Stack several PDFs into one file, ordered by hand.
- Join PDFs into one file on Windows For Windows users joining files in Edge or Chrome with no extra software.
- Join PDFs into one file on a Mac For Mac owners joining files in Safari, or in Preview when offline.
- Join two or three PDFs Fill one upload box from a couple of files.
- Gather loose pages into one PDF Collect sheets from several places into one packet.
- Bundle photos into one PDF Make a folder of pictures read as one document.
- Scan sheets into a single PDF End a scanning session with one file, not ten.
- Join scans into one PDF Unite separately scanned sittings and keep the size down.
- Roll screenshots into a PDF Send a run of captures as one readable file.
- PDF merger Join your PDFs here, in the order you set.
- Join, then fit the size cap Squeeze the finished bundle under a portal limit.
- Unite several Word files Export each document, then join the exports.