Merge your documents without uploading them anywhere.
You need to submit one PDF but your documents are scattered across five files. A cover letter, a resume, a portfolio, two reference letters — and the application portal only accepts a single upload.
Or you're assembling a report: the executive summary from one author, data appendices from another, and charts exported from a third tool. Combining them should take seconds, not a software subscription.
Drag all the PDFs you want to combine into the merge tool. Add as many files as you need — there's no limit on the number of documents.
Drag files to reorder them. The first file in the list becomes the first pages of the merged PDF. Remove any files you don't need.
Click Merge and download your combined PDF instantly. All formatting, images, and bookmarks from the original files are preserved.
Combine your resume, cover letter, portfolio, and references into a single PDF. Many application portals only accept one file upload.
Merge sections authored by different team members. Combine a title page, executive summary, data sections, and appendices into one deliverable.
Combine monthly invoices into a quarterly or annual bundle for accounting. Merge receipts for expense reports.
Courts and government agencies often require a single PDF containing multiple documents. Merge forms, declarations, and exhibits into one filing.
When you merge PDFs online with most tools, every document in the batch gets uploaded to a server. If you're combining a contract, a financial statement, and an ID verification document, all three files now exist on a third-party server — together, in one place.
ModernPDF merges documents entirely in your browser. Your files never leave your computer. The JavaScript-based merge engine reads each PDF, combines them in memory, and produces the merged output — all locally. Even if you're on a public Wi-Fi network, no document data travels over the connection.
This is especially relevant for legal filings (attorney-client privilege), HR documents (employee records), and financial packets (tax returns, bank statements) — situations where the combined document is more sensitive than any individual file.
There's no hard limit on the number of files. The practical limit depends on your device's memory. Most users merge 2-20 files without any issues. For very large batches (50+ files), performance depends on your computer.
No. Merging concatenates the PDF pages without recompressing images or modifying content. The output quality is identical to the input files.
Yes. If your PDFs have different page sizes (letter, A4, legal), each page retains its original dimensions in the merged file.
Yes. Bookmarks and table of contents entries from the original files are carried into the merged document.
The merge tool works with PDF files. If you need to combine images (JPG, PNG) into a PDF, use the Image to PDF tool first, then merge the resulting PDFs.
Merge any number of files in seconds. Free to start. Private. Pro for unlimited use.
Open Merge PDF