Legal
Combining signed contract pages
Scan the signature page, merge it with the original contract, send one clean PDF instead of three. Common workflow for freelance contracts, NDAs, and real estate paperwork.
All tools
PDF Merge
Combine multiple PDFs into a single file. Drag, reorder, merge — fully in your browser.
- 100% local
- No signup
- Works offline once loaded
What this does
Combine multiple PDFs into one file — in your browser, in seconds.
Drop PDFs in, drag to reorder, and download a single merged file. Nothing uploads to a server. No watermark, no signup, no page limit. Works on any device with a browser, including Chromebooks where you can't install desktop PDF software.
How to merge PDF files
Three steps, under a minute, no account required.
- 1
Drop your PDFs
Click the dropzone or drag-and-drop multiple PDF files at once. There's no file count limit and individual files can be hundreds of pages.
- 2
Reorder if needed
Each PDF appears in a list with up/down arrows. Drag them into the order you want the merged file to follow. The first file becomes pages 1-N, the second picks up where it left off, and so on.
- 3
Merge and download
Click "Merge PDFs." The combined file generates instantly on your device and downloads to your default folder as one file. Your original files stay unchanged.
contract.pdf
4 pages
signature.pdf
1 page
exhibits.pdf
7 pages
Drag up/down to reorder
merged.pdf
12 pages · all originals preserved · downloaded to your device
| Pages in merged PDF | Source file | Original pages |
|---|---|---|
| 1–4 | contract.pdf | 1–4 |
| 5 | signature.pdf | 1 |
| 6–12 | exhibits.pdf | 1–7 |
Privacy
Your PDFs never leave your browser
Most online PDF mergers upload your files to their servers, process them, then send the merged version back. That's how iLovePDF, Smallpdf, and Adobe's web tools all work. We don't — the entire merge runs inside your browser using JavaScript (pdf-lib).
- No network requests for your file content
- Works offline once the page is loaded
- Safe for client contracts, medical records, and confidential reports
- No "processed file deleted after 1 hour" — there's nothing on a server to delete
When you'd use this
Finance
Bundling monthly statements
Download 12 monthly bank or credit card statements and merge them into one year-end PDF for accounting, tax prep, or loan applications.
Design
Stitching proof rounds
Combine v1, v2, and v3 of a brochure into one merged PDF for the client to flip through, so they see the progression in context.
Education
Course packets and reading lists
Teachers often hand out a packet of 5-15 PDFs as a single bundled file at the start of a semester. Merge them once, distribute one.
Real estate
Disclosure packages
Sellers' disclosure forms, HOA docs, inspection reports, and survey maps all get merged into a single 50-100 page disclosure packet before a sale closes.
Operations
Invoice + receipts as one expense submission
Some expense systems only accept one PDF per line item. Merge the invoice with supporting receipts before submitting.
How this compares to other merge tools
We benchmarked the five most-used merge tools on three things that matter: privacy, page limits, and friction.
| Feature | BBulkShare | ||||
|---|---|---|---|---|---|
| Runs in your browser only | Yes | No | No | No | Yes |
| Files uploaded to server | Never | Yes (deleted after 2h) | Yes | Yes (deleted after 1h) | N/A |
| Page limit per file | None | None | 500 pages | None | None |
| Files per merge | Unlimited | Unlimited (Pro) | 100 files | 20 files (free) | Unlimited |
| Free tier file-size cap | No cap | 100 MB | 100 MB | 5 GB total | No cap |
| Account required | No | After 2/day | Yes | After 2/day | No |
| Reorder pages | Yes | Yes | Yes | Yes | Yes |
| Works offline | Yes | No | No | No | Yes |
| Watermark on free tier | No | No | No | No | No |
Tips that save time
- 01
Order matters — sort before you drop
Files merge in the order you add them. If you select all 12 monthly statements at once from a folder, your OS's sort order (often modified-date or name) is what carries over. Rename files with a leading number (01-, 02-, 03-) for predictable order.
- 02
Password-protected PDFs need unlocking first
We can't merge encrypted PDFs — pdf-lib won't open them without the password, and asking you to type the password for each file would be slow. Strip the password in your PDF reader first (File → Print to PDF without security), then merge.
- 03
Bookmarks and form fields don't survive merging
Bookmarks and interactive form fields get flattened in the merge. If you need bookmarks preserved, Adobe Acrobat desktop is the only tool that handles this well. For most use cases (signed contracts, statements, reports) flattening is fine.
- 04
Huge merges (500+ MB) can crash your browser
Browser memory is limited. If you're merging huge files, work in batches: merge 5-10 files at a time, then merge the resulting files together.
- 05
Need to insert a page mid-way?
Merge them in any order, then use our PDF Split tool to extract page ranges and re-merge — that's the simplest two-step path for inserting one PDF into the middle of another.
Keep going
Related tools you might need
PDF Split
Pull specific page ranges out of a PDF or split every page into its own file.
PDF Compressor
Merged PDFs can balloon in size. Compress the result before sending.
JPG to PDF Converter
Have images you need to merge into the PDF? Convert them first, then add to the merge.
Send large files
When your merged PDF is too big to email, use a transfer service instead.
No signup. No upload. Just the result.
Local only
Files never leave your browser.
Everything runs locally in this tab. Nothing uploads, nothing stores on a server, nothing indexes.
Ready in seconds
Fast — no queues, no ads.
No progress bars stuck at 99%, no rate limits, no 'please wait' screens. Drop, click, done.
On Pro
Branded delivery, when needed.
When the free tool isn't enough, deliver from files.your-agency.com — password and view analytics included.
More free tools for the handoff.
ZIP File Creator
Eliminates manual zipping steps when sending multiple files to clients.
Compression Toolkit
Lets users actually compress files right away instead of guessing output ranges.
Client Delivery Email Generator
Saves time and reduces confusion in client handoffs by standardizing delivery messages.
PDF Compressor
Helps users send oversized PDFs that fail email and portal upload limits.
PDF Split
Extracting pages from a PDF usually requires uploading to a third party. This tool does it locally in your browser.
JPG to PDF Converter
Solves daily document submission needs when portals accept PDF but not image files.
Frequently asked
No. Everything runs locally in your browser using pdf-lib. Your files never leave your device — even on Wi-Fi off, the merge still works.
There's no hard limit — though browser memory limits typically mean ~50-100 PDFs at once is comfortable. For dramatically larger merges, do them in batches.
You can reorder the FILES being merged (drag to rearrange). For page-level reordering within a single PDF, use the PDF Split tool first to extract specific pages, then merge.
Annotations and basic structure are preserved. Form fields and complex bookmarks may not survive — those require server-side processing for full fidelity. For simple delivery merges (combining client docs into one), browser merge is sufficient.
No. No watermarks, no signup, no page limits. Most other PDF merge tools watermark or limit you — we don't because we want the tool to be genuinely useful (and convert you to BulkShare for larger delivery workflows).