PDF Merger & Splitter: Merge or Split PDFs Free Online, No Upload
Merge multiple PDFs into one, or extract pages from a PDF — free, private, runs in your browser.
Drop PDFs here or browse files
Add as many PDFs as you like — order them below
How to Merge or Split PDFs Online — Free & Private
This tool uses pdf-lib, a pure JavaScript PDF library, to merge and split PDFs entirely inside your browser. No file is ever uploaded to a server. Your documents stay on your device from the moment you drop them in to the moment the merged or split result downloads. Switch between the Merge and Split tabs at the top of the page depending on what you need, and each tab keeps its own file list so you can jump back and forth without losing your place.
How merging works
Drop or browse for as many PDFs as you want to combine. Each file appears in a numbered list showing its size and page count, and the ▲▼ buttons let you reorder files before merging, since the final document follows whatever order the list shows top to bottom. Clicking Merge reads every file's pages with pdf-lib, copies them in order into a fresh document, and triggers a download of the combined PDF. The header above the list keeps a running total of files and pages so you can confirm the merge will produce the document you expect before committing to it.
Merge PDFs
- 📎Combine contracts, reports, or scans into a single shareable file
- 🔀Reorder pages before merging using the ▲▼ buttons
- 📊See the total page count before you download
How splitting works
Upload a single PDF and choose one of two modes. "Extract page range" pulls specific pages into a new PDF using a range string like 1-3, 5, 8-10, which the tool parses into a set of page indices, validates against the document's actual page count, and rejects with a clear error if a range falls outside the document or the syntax doesn't parse. "Split all pages" breaks every page into its own single-page PDF and bundles the whole set into a ZIP archive using JSZip, which is the faster path when you need each page as a standalone file rather than a specific subset.
Split / Extract pages
- ✂️Extract a chapter, section, or specific pages into a new PDF
- 📦Split every page into its own PDF — downloaded as a ZIP
- 🔢Use ranges like "1-5, 8, 12-15" for precise extraction
Common use cases
Combine a cover letter, resume, and portfolio PDF into one file before submitting a job application. Merge scanned receipts into a single expense report instead of attaching a dozen separate files to an email. Pull just the signature page out of a long contract to send for a quick e-signature without forwarding the whole document. Split a scanned book or manual into per-chapter files so a reader can jump straight to the section they need. Anyone assembling a packet from multiple source documents, or breaking one large document into distributable pieces, lands in one of these two tabs.
Tips for reliable results
Check the page count shown after uploading before you extract a range, since counting pages in a PDF viewer and counting them here can differ if the viewer shows a cover page separately. When splitting into individual pages, expect the ZIP download to take a moment longer for documents with dozens of pages, since each page becomes its own document before compression. If a merge or split produces an unexpected result, reload the file and try again. A partially corrupted PDF can sometimes load enough metadata to appear valid while failing during the actual page copy.
Related tools
For converting a Word document to PDF before merging, the Document Converter handles DOCX to PDF directly in your browser — no upload required.
Frequently asked
Are my PDFs private? Yes, processing runs entirely client-side using pdf-lib. Files are read and written in your browser's memory and are never sent anywhere.
Does it work with scanned PDFs? Yes. Scanned PDFs are image-based, and the tool treats every page as a page regardless of whether it contains real text or a scanned image, so merging and splitting behave identically either way.
What about password-protected PDFs? Lightly encrypted PDFs often load without issue since pdf-lib ignores basic encryption flags; heavily password-protected files will fail with an error, and you'll need to remove the password with the original PDF software before using this tool.
Is there a file size limit? There's no hard limit built into the tool, but very large PDFs (100 MB or more) can be slow to load and process depending on how much memory your device and browser tab have available.
Frequently Asked Questions
Is the PDF Merger & Splitter free?
Yes — completely free. No account, no subscription, and no file size limit.
Are my PDF files uploaded to a server?
No. Everything runs in your browser using PDF-lib. Your files never leave your device and are never transmitted anywhere.
Do I need an account?
No account, no login, and no email required.
Can I merge more than two PDFs?
Yes. Add as many PDFs as you like, reorder them with the up/down arrows, then click merge.
Does it work with scanned PDFs?
Yes — for merging and splitting. Scanned PDFs are handled as pages, not text, so they merge and split like any other PDF. The Document Converter's PDF to DOCX extraction does not work with scanned PDFs.
What happens with password-protected PDFs?
Lightly encrypted PDFs often work. Heavily password-protected files will fail with an error — you need to unlock them first.