Merge PDF: Combine PDF Files Free, Without Uploading
Your files never leave this device. Everything happens in your browser. Nothing is uploaded to Lookup or anyone else.
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Merged on your device. No upload, no watermark, no page limit.
How this works
The merge happens in your browser. Each PDF is read from your device and its pages are copied into a new file by the open-source pdf-lib library running on this page; the previews are drawn by Mozilla's pdf.js. No file is uploaded, which matters for the documents people usually merge: bank statements, payslips, tenancy agreements, NRIC copies and job applications.
Pages are copied as they are, so text stays selectable, fonts and images are kept, and there is no loss of quality. Files are joined in the order listed; moving a file moves all of its pages, and you can then drag individual pages anywhere, rotate them by 90 degrees or remove them before saving.
Password-protected or encrypted PDFs can't be merged until the protection is removed, because their contents can't be copied without the password. Bookmarks and form fields from the original files may not carry over.
FAQs
Is it safe to merge confidential PDFs here?
Yes. The files are never uploaded: the merge runs on your device, inside this page. Your browser's network panel will show that no file is sent anywhere.
How do I change the order of the PDFs?
Use the arrows next to each file to move it, which moves all of its pages together. To fine-tune, drag individual pages in the page grid, or use the arrow buttons under each page on a phone.
Can I remove or rotate pages before merging?
Yes. Every page has a rotate button (90 degrees clockwise per tap) and a remove button. Only the pages left in the grid go into the merged file, in that order.
Is there a file size or page limit?
There is no set limit. Because everything runs on your device, the practical limit is your phone's or computer's memory; merging a few hundred pages is usually fine on a laptop.
Why can't I add a password-protected PDF?
An encrypted PDF's pages can't be copied without the password. Open it in a PDF reader with the password, save or print a copy as PDF without protection, then add that copy.