Merge PDF Files
Combine several PDFs into one file, free and without signing up. Drag individual page thumbnails into any order before merging — nothing is uploaded, it all happens on your device.
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Drop PDF files here, or click to choose
You can add more files at any time — new pages are appended to the end.
Drag any page to reorder it — pages can move freely between files. Use the arrows on a card for keyboard/touch-friendly reordering.
How to merge PDF files
- Choose or drop two or more PDF files.
- Drag the page thumbnails into the order you want. Pages from different files can be mixed, and ✕ removes a page.
- Click Merge & download PDF to save the combined file.
About this tool
Upload two or more PDFs and every page from every file appears below as a thumbnail, in the order the files were added. Drag any thumbnail anywhere in the grid to change the final page order — you're not limited to reordering whole files, individual pages can be interleaved however you like. Each card also has ◀ ▶ move buttons and a remove (✕) button for precise, non-drag control, and each uploaded file can be removed entirely from the list above the grid.
Merging is done with pdf-lib, which copies the actual page content (vector graphics, text, and embedded images) from each source PDF into a new document in your chosen order — it isn't rasterizing pages into images, so text stays selectable and sharp at any zoom. Thumbnails are rendered with Mozilla's pdf.js.
Your files are read directly in the browser tab with the File API and never leave your device — there is no upload, and the merge, thumbnailing, and download all happen locally.
Questions about merging PDFs
Is it really free?
Yes. There’s no account, no signup, no trial and no paid tier, and the file you download has no watermark. It has no ads either: toolcrate keeps its PDF and file tools ad-free.
Are my files uploaded anywhere?
No. The PDF is opened and processed by your own browser, on your own device, and is never sent to a server. That makes it safe for contracts, bank statements, medical letters and anything else confidential.
Is there a limit on how many PDFs I can combine?
toolcrate sets no limit on the number of files or their size. Very large files are limited only by your device’s memory.
Will the text in the merged PDF still be selectable?
Yes. Pages are copied across as they are, not turned into pictures, so text stays sharp, selectable and searchable, and images keep their quality.
Does it work on a phone?
Yes. It works in the browser on iPhone, Android, tablets and computers, with no app to install. Once you’ve used it, it keeps working without an internet connection.