masstree.inMerge PDF
Drop your PDFs, drag them into order and download one combined file.
Runs in your browser — nothing is uploaded or stored on a server.
How to split
Pages to remove
Rotation
Numbering
Compression
Pages are redrawn as images, so text stops being selectable. Keep the original if you need to search it later. With a target size, quality and resolution are lowered step by step until the file fits.
Output
Page size
Watermark
Your signature
Placement
This is a visual signature placed on the page, the same as signing a printout — not a cryptographic certificate.
Output
Only the text is kept, in paragraphs with a page break between pages. Scanned PDFs have no text — turn them into images and let the assistant read them.
Working…
Common uses
Joining an application form with its certificates, combining monthly statements, or putting chapters together.
Order
Files are merged top to bottom; drag rows to reorder them before merging.
After merging
Use “Page numbers” to number the combined file, or “Compress” if it has to fit an upload limit.
Questions
Is there a limit on files?
No fixed limit — it depends on your device's memory.
Are bookmarks kept?
Pages and their content are kept; bookmarks and form fields may not be.
Is it private?
Yes, merging runs in your browser and nothing is uploaded.