Why TIFF is still used
TIFF has been the standard image format for scanning, faxing, printing and long-term document storage for decades. Document management systems, court and land-record archives, medical record systems, print shops and fax services often require TIFF because it can store pages without any quality loss.
What happens when you convert
Each PDF page is drawn at your chosen resolution — 96, 150 or 300 DPI — and saved as an uncompressed, single-page TIFF in full colour. Transparent areas are filled with white. The files are named by page number and downloaded together in a ZIP, or one by one from the file list.
Size and quality
Uncompressed TIFF keeps every pixel exactly, but files are big: an A4 page is about 6.5 MB at 150 DPI and about 26 MB at 300 DPI. Use 300 DPI only when an archive or printer asks for it, and make sure you have enough storage for long documents.
Common problems and how to fix them
The receiving system wants one multi-page TIFF: this tool creates one TIFF per page; some systems accept the pages as a batch, others require a desktop program to combine them. Files are too large to email: share them through cloud storage or ask whether PNG is acceptable. Black-and-white (bitonal) TIFF is required: the colour TIFFs from this tool may need converting in the receiving software.
Good habits
Confirm the archive's exact TIFF requirements first, keep the original PDF, and store TIFF files in clearly named folders by document.