Arrange documents as cards
Each PDF becomes a horizontal card with its name, thumbnail, and a first-page excerpt when text is available. Drag one card before or after another to decide where that document begins in the final PDF.
GUIDE · PDF LABHow to organize and merge PDFs locally
Merge PDFs without losing control of page order
Merge PDFs is designed as a working desk rather than a blind file queue. Add documents, see the first page of each one, and use the detected title and excerpt to know exactly what enters the final file.
PDFs are read and assembled directly in your browser. The card order you see is the export order; no copy is sent to a server to perform the merge.
Open and rearrange pages
Expand any document to view page thumbnails. A page can move to another PDF, be placed before an existing page, rotated, duplicated, removed, or followed by a blank page.
Review before downloading
Use the preview to open the exact result that will be generated. This is useful for contracts, study material, scanned papers, attachments, and reports with different source orders.
Set metadata
You can set title, author, subject, and keywords for the final PDF. These fields help identify the file in PDF readers, archives, and professional workflows.
Large and protected PDFs
The tool does not impose an artificial number of PDFs. The practical limit is available browser memory. Encrypted, password-protected, or damaged PDFs must be unlocked or repaired before they can join the desk.
Frequently asked questions
Can I merge as many PDFs as I want?
Yes. There is no commercial or quantity limit imposed by the tool. The real limit depends on device memory and document complexity.
Does the card order define the final PDF?
Yes. Documents export in the visual card order. The order shown when pages are expanded is also preserved.
Can I use only selected pages from each PDF?
Yes. Expand documents and move, duplicate, or remove pages before generating the file. You can also download the selected page separately.
Do my files leave my computer?
No. Reading, thumbnails, preview, and PDF creation happen locally in the browser.
Why will a PDF not open?
Password-protected, encrypted, damaged, or unsupported PDFs can block reading. Try removing protection or opening the file in a PDF reader first.
Tip: when merging long documents, arrange cards first, expand only the PDFs that need page-level edits, then generate a preview before downloading.
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