What is a TIFF File? When to Use It and How to Convert

You've received a TIFF file from a photographer, scanner, or print service and aren't sure what to do with it. Or you've noticed that your scanner saves in TIFF by default, producing files of 30 MB or more. This guide explains what TIFF is, why it exists, when it's the right format, and when to convert to something more practical.

What does TIFF stand for?

TIFF stands for Tagged Image File Format. It was created in 1986 by Aldus (later acquired by Adobe) to serve as a standard format for storing raster images from scanners and other devices. Unlike JPEG, which was designed for compact storage with acceptable quality loss, TIFF was designed to be a professional archival format.

Why are TIFF files so large?

TIFF files are large because they are designed for lossless storage. By default, a TIFF stores every pixel exactly as captured, with no quality trade-off. A full-resolution scan at 300 DPI for an A4 page produces a TIFF of around 25–50 MB, depending on colour depth. A 24-megapixel camera photograph saved as uncompressed TIFF is typically 70–80 MB.

TIFF does support optional compression (including LZW lossless compression), which can reduce file sizes significantly, but many scanners and applications save uncompressed TIFF by default, producing the largest possible files.

TIFF vs other formats

When should you use TIFF?

TIFF is the right format in these specific professional contexts:

• Document archiving. When scanning documents for long-term preservation where you never want to re-scan, TIFF with LZW compression is appropriate.
• Professional photography workflows. TIFF is used for images that will undergo extensive post-processing, where each edit-and-save cycle must not degrade quality.
• High-resolution print production. Print shops often require TIFF for large-format printing because it preserves colour fidelity at high DPI.
• Medical and scientific imaging. TIFF supports multi-page files and high bit depths, making it common in medical scanners and microscopy.

When should you convert TIFF to another format?

• Sharing via email or messaging. A 40 MB TIFF is impractical to send. Convert to JPEG at high quality — the result is typically 2–5 MB with no visible difference at normal viewing distances.
• Uploading to websites or portals. Most web forms and image hosting services don't accept TIFF. Convert to JPEG or PNG.
• Web display. Browsers don't support TIFF natively. If you need to display an image on the web, convert to JPEG, PNG, or WebP.
• Everyday editing. If you're editing in consumer software (Google Photos, Preview, Paint), TIFF is unnecessarily heavy. JPEG or PNG works better.

How to convert TIFF to JPEG or PNG for free

Safe File Converter converts TIFF files to JPEG, PNG, WebP, or AVIF entirely in your browser. Drop your TIFF file, choose the output format, set the quality if needed, and download. Your file is never uploaded.