merge PDFs
Join several PDFs into one, in this tab. Set the order, see the total page count, and nothing is uploaded.
There is no Google Drive or Dropbox button on purpose: those send the file through a server. Here is what happens instead.
in three steps
- Drop the PDFs in, or choose them. The page count of each one appears beside its name.
- Put them in the order you want with the arrows; the result follows the list from top to bottom.
- Merge, and take the single document. Nothing was uploaded, and the log says so.
how it works
Each document is opened in this tab and its pages are copied, one after another, into a new document. Nothing is re-rendered: text stays selectable, images keep the compression they already had, and the result weighs about what the originals weigh together.
The order on screen is the order in the result. Use the arrows on a row to move a document up or down before you start, and remove any file you picked by mistake.
why doing this locally matters here
The documents people merge are rarely trivial: an expense claim and its receipts, a contract and its annexes, a medical file assembled for a second opinion. Merging is the last step before sending, which means the merged file is usually the most complete and most sensitive version of the whole thing.
A merge service receives all of that, in one go, and the only thing standing between it and whoever runs the service is a policy. Here the documents are opened by the browser you already trust with them, and the only copy that exists is the one you save.
questions
Where do my PDFs go?
Nowhere. Your browser reads each file, copies the pages into a new document and hands that back, all inside this tab. There is no server behind this site that could receive them, and the job log under the tool counts the requests the page made while merging and how many of them left this site; the second number is zero, which you can confirm in your browser's network panel.
Is there a limit on the number or the size?
None imposed by this site. The practical limit is your device's memory, because every document has to be held while the new one is built. Twenty ordinary documents are nothing; a hundred scanned books on a phone will run out of room, and the tool will say so rather than quietly sending them somewhere.
Does merging lose quality?
No. Pages are copied from one document into another as they are — the text stays text, the images keep the compression they already had, and nothing is re-rendered. The merged file is roughly the size of the originals added together.
What happens to bookmarks, forms and links?
Page content, including text, images and annotations, comes through intact. Document-level features — the bookmark tree, form field logic, and links that pointed to a page by reference — are not carried across by the library this tool uses. If a document is a working form, merging it will leave the fields in place but may break the logic behind them.
Can it merge a password-protected PDF?
Not yet. An encrypted file cannot be read without its password, and this tool will say so instead of producing a broken result. Open it in a reader with the password, save an unprotected copy, and merge that.
Is this really free?
Yes, with no account and no paid tier. Advertising pays for the hosting, which is cheap because your device does the work. Since your documents never reach us, there is nothing about them to sell.