# Merge PDF > Combine PDF files into one in your browser: reorder, pick page ranges per file, download. Nothing uploaded; the result has no document info (author, dates). - URL: https://bytescope.dev/en/pdf-merge/ - Locale: en · Also: [ja](https://bytescope.dev/ja/pdf-merge.md) · [zh-Hant](https://bytescope.dev/zh-Hant/pdf-merge.md) - Runs: Your files never leave your browser — all processing is local. - Requires: Any modern browser (Chrome, Edge, Firefox, Safari), desktop and mobile. - Updated: 2026-09-08 ## What it does A contract body, its annex and the signature page; ten scanned receipts that have to go in as one attachment; a report plus the slides that go with it. This page joins PDF files into a single PDF without sending them anywhere. Drop the files in, drag them into order (or sort them by name — `2.pdf` lands before `10.pdf`), and, for any file, type a page range such as `1-3, 7, 10-` to take only those pages. Each file shows its name, page count, size and whether it is encrypted, so you can see what you are about to join before you join it. ### Nothing is uploaded, and nothing extra is written The merge runs in JavaScript inside this tab. There is no server behind the page, so the files cannot leave your machine — turn the network off and it still works. The output is built as a fresh document with no Document Information Dictionary at all: no `Author`, no `Producer`, no creation or modification date, and nothing naming the tool or your computer; per-page XMP metadata is dropped too. That covers document information only: comments and other annotations are page content, so they are kept along with the name of whoever wrote them — delete them in your PDF reader first if they should not travel. Before the download is offered the merged file is loaded again and its page count is checked against the sum of the pages you selected; if they disagree you get an error, not a file. If you want to see or strip what an existing PDF says about itself, the Remove PDF Metadata tool reads those fields. ### What a merge can lose Merging copies pages from one document into another, and some things live outside the pages. Bookmarks (the outline) may not come across. Links that jump to another page, and table-of-contents links, may stop working because they point at page objects in the original file. Form fields may show but no longer be fillable. Accessibility tags (the Tagged PDF structure tree) may not be preserved. One thing is certain rather than possible: a digital signature will no longer verify, because merging changes the bytes it signed — that is true of every merge tool, not a fault of this one. Password-protected PDFs are listed, marked as encrypted and left out of the merge; the other files still merge normally. This page does not ask for, guess or remove passwords. Once the download is offered, the merged PDF is an ordinary file: open it, print it, attach it, or drop it back on this page to join it with something else. ## Limits Does not open or merge password-protected PDFs (they are listed and skipped), does not compress the result, does not edit page content, and does not show page thumbnails. ## FAQ ### Are my PDFs uploaded to a server? No. The files are opened with the File API, the pages are copied in JavaScript in this tab, and the merged PDF is a download the browser built in memory. There is no API behind this page, so there is nowhere for the files to go. That is the point for contracts, medical records, ID scans and tax documents — the files people most often need to merge and least want to hand to a website. ### Can I merge only some pages of a file? Yes. Next to each file you can type a page range like `1-3, 7, 10-`. `10-` means from page 10 to the end, `-3` means pages 1 to 3, and pages may be listed in any order or repeated. If the range has a typo or names a page the file does not have, the exact spot is pointed out before anything is merged. ### Does the merged PDF say who made it or when? No. The output is created without a Document Information Dictionary, so it has no `Author`, `Title`, `Producer`, `Creator` or dates, and nothing naming this site. The source files' own metadata is not copied either — only their pages are. One thing that does stay: sticky notes, highlights and other annotations, including the author name on each of them, because they are part of the page, not file metadata. Remove them in your reader before merging if that matters. If you want to check that yourself, drop the result on the Remove PDF Metadata page: every field should read as empty. ### Will bookmarks, links and form fields survive the merge? Possibly not. Pages are copied one by one, and bookmarks, cross-page links and the form definition (`AcroForm`) are stored at the document level rather than on the pages, so they may be dropped or stop working in the merged file. Page content — text, images, vector drawings — comes through intact. If bookmarks matter for a particular file, check the result before you send it. ### One of my files has a password. What happens? It is shown in the list, marked as encrypted, and excluded from the merge; the remaining files merge normally. This page does not try to open, guess or strip passwords. If you have the password, remove it in the program that set it and drop the unlocked file here. ## Related tools - [Split PDF](https://bytescope.dev/en/pdf-split.md) — The opposite job: cut one PDF into parts, pull out pages or drop some. - [Images to PDF](https://bytescope.dev/en/images-to-pdf.md) — Turn photos and scans into a PDF, then merge it with the rest here. - [Remove PDF Metadata](https://bytescope.dev/en/pdf-metadata.md) — See what author, producer and dates a PDF carries, and strip them. - [Compress Image](https://bytescope.dev/en/image-compress.md) — Shrink the images before you turn them into pages.