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Drop one PDF or two hundred. Batch conversion is not a paid feature here.
A document management system, a fax gateway or a court filing system takes TIFF and rejects PDF.
Each PDF page is rendered to a raster at a chosen DPI and stored as a page inside a single multi-page TIFF. Vector text becomes pixels, so the resolution you pick is the resolution you keep.
200 DPI bitonal is the convention these systems expect and it produces small files with CCITT Group 4 compression. Rendering the same document at 600 DPI in colour can make the TIFF larger than the PDF by a factor of fifty.
200 for records and fax workflows, 300 if the output will be OCRed or reprinted. Higher is rarely useful and always expensive.
No. A TIFF is a picture of the page. Anything that needs to search it has to OCR it first.
Drop one PDF or two hundred. Batch conversion is not a paid feature here.
Tagged Image File is lossless, so nothing is thrown away in the conversion.
Converted and deleted the moment it finishes. Never written to permanent storage.