Many PDFs, one document
The PDF Merger combines up to twenty PDF documents into a single file, in exactly the order you choose. Drag files in, rearrange them until the sequence is right, and download one clean, bookmark-free, watermark-free document — assembled entirely in your browser.
Fragmented documents are an everyday reality: invoices split across months, scanned chapters saved separately, forms plus attachments. Merging them makes filing, printing and sharing dramatically simpler — one attachment reaches the recipient in reading order, every time.
The merge runs locally using pdf-lib: pages are copied into a fresh document on your device, so confidential contracts and financial records never travel to a server. There is no file-size upload limit, because there is no upload — only what your browser can comfortably hold in memory.
Like every Piclizer tool, this one runs entirely in your browser — your files stay on your device.