Merge PDFs into a single file
Combine multiple PDFs in any order, drag to reorder pages, and download a single merged document. Everything runs in your browser, your files stay private.
Drop PDFs here
or click to browse files
01Why this merger
One file, the right way.
Four reasons accountants, agents, and students keep this page open instead of installing Acrobat or risking a random uploader.
- 01
Drag files into the order you want
Drop a bunch of PDFs and shuffle them around like cards. The final order is whatever order you leave them in — no awkward arrow buttons.
- 02
Merges happen in the browser
The PDFs are stitched together by pdf-lib running locally. Even a five-file merge usually finishes before you finish reading the result line.
- 03
Your documents stay with you
Contracts, tax forms, signed paperwork — nothing leaves your machine. There's no server-side step, so we never see what you're working on.
- 04
No file caps, no watermark
Merge two files or twenty. There's no quota, no daily limit, and the output PDF is clean — no banner, no Wirelogs stamp.
02How it works
Drag, drop, done.
- Drop PDFscover.pdf · brief.pdf · notes.pdf3 files · 4.6 MB
Step 1Drop your PDFs in
Drag in everything you want combined. You can add more files later — they'll land at the bottom of the list.
- OrderCoverBriefNotesSign
Step 2Reorder by dragging
Grab a file and move it up or down until the list reads top-to-bottom in the order you want the pages to appear.
- Mergedcombined.pdfPDF · 4.5 MB · 18 pages
Step 3Download the combined file
Click Merge and save one tidy PDF. The originals stay untouched, so you can re-merge with a different order anytime.
03Use cases
When a single file beats a thread of attachments.
Anywhere the answer is “please send everything as one PDF”, this is the page you reach for.
Stitch a signed contract
Combine the cover letter, the contract, and the signed signature page into one file before you send it back.
3 PDFs → 1 contract.pdfSubmit a single expense report
Bundle every receipt, every booking confirmation, and the cover form into one PDF your finance team will actually open.
12 receipts → expenses-aug.pdfHand in a portfolio
Glue scanned essays, certificates, and a CV into a single application file with a coherent page order.
CV + essays + work → portfolio.pdfSend a property file
Title deeds, the floor plan, the inspection report — agents and buyers want one PDF, not seven attachments.
Listing pack → 1 fileCombine class notes
Merge a semester's worth of lecture PDFs into one revision-ready file. Bookmarks survive, page numbers re-flow.
Weekly notes → revision.pdfArchive a project
When work wraps, collapse a folder of related PDFs into one archive you can drop in a project folder and forget.
Project files → 2026-Q1.pdf
04Quick tips
Small habits, faster merges.
Stuff regulars do to skip the fiddly steps.
- 01
Name files in the order you want
Prefix names with 01_, 02_, 03_ before dropping them in. They'll land in the right order and you barely have to drag anything.
- 02
Compress before merging if it's tight
Email gateways often cap at 25 MB. Run each PDF through the Wirelogs PDF compressor first, then merge — you'll usually clear the limit.
- 03
Reuse the Organize tool for fine fixes
If a single page is rotated or out of order, merge first, then open the result in Organize PDF to fix it without re-merging.
- 04
Remove a file with the X
Wrong file? Hit the X next to it instead of starting over. The remaining files keep their order.
05Loved by
Agents, accountants, and students use it weekly.
Every listing pack used to be ten attachments. Now I drag the lot in, sort the order, and email one file. Clients actually open it.
Tax season means dozens of receipts per client. Merging them in the browser, with no upload spinner, shaved hours off my week. Still can't believe it's free.
I combined six chapter drafts into one PDF for my supervisor. Took ten seconds. The PDF compressor here got it under the email limit too.
06Questions
PDF merging, plainly answered.
The things people ask before sending their first big bundle. Missing something? hello@wirelogs.com.
01How many PDFs can I merge at once?
There's no hard cap. Practically, the tool handles anything from two files up to a few dozen comfortably. Each individual file maxes at 100 MB, but most everyday PDFs are well under that.
02Will the page order stay how I arranged it?
Yes. The merged PDF follows the exact order shown in the list, top to bottom. Drag files to reshuffle before you hit Merge.
03Does merging change the page content?
No. Pages are copied as-is. Text stays selectable, images stay sharp, bookmarks survive when the underlying PDF carried them. Nothing is re-encoded.
04What if one of my PDFs has a password?
The merger will read encrypted PDFs that don't strictly enforce permissions (most everyday-protected files). For PDFs with a true open password, decrypt them in a viewer first, then merge.
05Will the file size grow?
The merged PDF is roughly the sum of the inputs. If it's heavier than you want for email or upload, run it through the Wirelogs PDF compressor — usually 30–60% smaller in one click.
06Is anything uploaded to a server?
No. Everything runs in your browser using pdf-lib. Wirelogs never receives your PDFs — even the sensitive ones with names, addresses, or signatures stay on your machine.
07Is the tool truly free?
Yes. No sign-up, no usage cap, no premium tier, no watermark. We don't even know who uses it because we don't ask.
08Does it work on phones?
Yes. The merger runs on iOS Safari and Android Chrome, supports touch drag, and lets you save the result straight to Files or your downloads folder.
Ready when you are
Bundle it into one PDF.
Drag your files into the tool above and decide the order before you save. No upload, no sign-up, no watermark — and it works offline once the page is loaded.
- ∞files per merge
- 100 MBper file
- $0now and always