Combine multiple PDFs into a single file, in the order you choose. Nothing leaves your browser.
Add two or more PDFs — drag the list below to reorder them.
merged.pdf — your files stay on your device the whole time.No — merging happens with pdf-lib running inside your browser tab; the files never touch a server.
No hard limit — your browser's available memory is the only constraint, so very large batches may be slower on older devices.
Only the order you set — drag the rows in the file list up or down before merging to control the final page order.