Why won't my TIFF open?

The scanner finished, the file is sitting in your documents folder, and nothing will show it to you. Drag it into a browser tab and you get a download prompt or a blank page. Attach it to an email and the recipient replies asking what a .tif is.

The scan itself is sound. TIFF is simply a format the web never adopted.

No browser displays TIFF

Chrome, Firefox and Edge have never supported it. Safari's handling is partial and varies between versions, which makes it a poor thing to rely on. That single fact explains most of the trouble: upload forms reject it, web previews fail, and anything that renders through a browser engine shows nothing.

Windows Photos and macOS Preview both open TIFFs perfectly well, which is why the file looks fine on your machine and broken everywhere else.

Why your scanner chose it anyway

TIFF has been the document-imaging standard since 1986, and for good reasons that have nothing to do with the web:

• It stores images without discarding anything, and a scan is exactly what the sensor read.
• One file can hold many pages, which is how a twenty-sheet document feeder produces a single .tif.
• It supports the fax compressions (CCITT Group 3 and Group 4) that make black-and-white document scans small.

Archives, medical imaging, laboratory equipment and fax gateways all still write it. Your scanner is not being awkward; it is following a convention older than the web.

Three ways to fix it

1. If it is a document, turn it into a PDF. TIFF to PDF keeps every page of a multi-page scan in one file that opens anywhere and prints predictably. For anything you need to email, file or send to a solicitor, this is the answer.

2. If it is a picture, convert it to JPG. TIFF to JPG makes it viewable everywhere at a fraction of the size, since uncompressed scans routinely run 20 to 50MB per page.

3. If the pixels matter, use PNG. TIFF to PNG keeps every pixel exactly while still shrinking the file, which suits scanned text, line drawings and anything heading for an editor.

The mistake that loses pages

An image file holds one picture, and converting a multi-page scan to JPG keeps the first page only, here and in most tools like it. If your .tif is a ten-page contract, that JPG is page one with nine left behind.

Use the PDF route for documents. Sending the converted image alone would give them the first page of a document and none of the rest.

Stopping it happening again

Most scanner software lets you pick the output format before scanning. Choose PDF for documents and JPG for photographs, and the problem does not recur. TIFF is worth keeping only when you need an untouched master copy for archiving.