Merge PDF
Merge PDF handles one task — combine multiple pdfs into one — without an account or a download. Pages are read and rewritten inside your browser with the PDF-lib engine, so the document never travels to a server and nothing is stored after you close the tab. It is used most by small firms handling client paperwork without a paid Acrobat licence. Works comfortably with documents up to roughly 100 MB; larger files depend on the memory your browser has free. It stays free with unlimited use, and there is no watermark on anything it produces.
Key features
- Works comfortably with documents up to roughly 100 MB; larger files depend on the memory your browser has free.
- Keeps the original page size, embedded fonts and image quality — no silent re-compression.
- Works on desktop, tablet and phone — no separate app to install.
- Built to do one job properly rather than twenty jobs badly.
How to use Merge PDF
- Add your PDF: Drag the file onto the drop area, or click it to browse your device. Several files can be added at once where the tool supports it.
- Set the options: Choose page ranges, order or output settings. The preview updates so you can confirm before committing.
- Download the result: Press the action button and the finished PDF saves straight to your downloads folder.
Frequently asked questions
- Will Merge PDF reduce the quality of my pages? — No. Merge PDF copies pages at their original resolution and keeps embedded fonts and images untouched, unless you deliberately choose a compression option.
- What is the largest file Merge PDF can handle? — There is no hard limit set by us — the practical ceiling is your device's memory. Documents up to about 100 MB are routine; several-hundred-megabyte scans may be slow on an older phone.
- Does Merge PDF work offline? — Once the page has loaded, the processing itself runs locally — so a brief drop in connection while you work will not interrupt it.
- Does Merge PDF upload my document anywhere? — No. Merge PDF opens the PDF with JavaScript inside your own browser tab. The file is never sent to a server, which is why it also works with confidential contracts and medical or legal paperwork.