Convert TIFF to PDF

Fax services, document scanners, e-fax inboxes, court and land-registry systems and older document management software still deliver pages as TIFF, often several pages in one file. The recipient usually wants a PDF: it opens on every phone, prints predictably and attaches to any form. This page turns each page of each TIFF into a page of one PDF.

The TIFF is read by UTIF.js, a decoder bundled with the site, because Chrome, Edge and Firefox cannot open TIFF themselves. It understands the compression schemes documents use, including CCITT Group 3 and Group 4 for black-and-white fax pages, plus LZW, Deflate and JPEG for colour scans. Each page is placed in the PDF at its own pixel size with "Fit to each image", or scaled onto A4 or Letter with a margin if you are going to print.

Drop several TIFFs and they follow each other in the order listed, every page of the first file, then every page of the next. Reorder files with the arrows before converting. Pages are stored as high-quality JPG inside the PDF, which keeps colour scans compact; a black-and-white fax page ends up well under 100 KB.

Faxes and scans tend to be paperwork you would not hand to an unknown website: medical referrals, tax letters, signed contracts, bank statements. Here nothing is uploaded. The TIFF is decoded and the PDF is written inside your browser tab, and closing the tab clears it.