A mergePages toggle controls the output: enabled (the default) combines all uploaded TIFF pages into a single PDF, disabled downloads each page as its own PDF.
Other online TIFF to PDF converters, such as Adobe Acrobat, also let users combine multiple TIFF files into one PDF. TIFF to PDF Online for Free | Adobe Acrobat
TIFF To PDFCombine Multiple TIFF Pages Into One PDF Document, Correctly Sorted
The upload step accepts multiple TIFF files at once, and pages can be dragged into a new order before merging.
Upload the scanned TIFF files to the tool.
Drag the pages into the desired reading order.
Checking the Merged PDF Output
Selecting start-over on the results screen empties the file list, ready for a new set of pages to be merged in one sitting.
Save the merged PDF using the download link above the results header.
Count the pages in the downloaded PDF to match the pages inside the uploaded TIFF files.
Continue with TIFF to PDF Page Size, Margins, and Orientation or Convert Scanned Fax TIFF to PDF.
Frequently Asked Questions about Combine Multiple TIFF Into One PDF
How do I change the order of the pages?
Rearrange the thumbnails by holding and moving one to a new position.
Where do I find the merge option?
Select the mergePages toggle to combine all uploaded TIFF pages into a single PDF.
How do I start over with a new set of files?
Select the reset link above the download button to merge a new batch.
How do I catch a wrong file before merging?
Check each TIFF thumbnail in the upload area before starting the merge.