A TIFF file is an image format that stores photos and scans in a way that preserves quality without shrinking the file size
TIFF stands for Tagged Image File Format. It was created in the 1980s by Aldus Corporation (now part of Adobe) as a way to store high-quality images that could be shared between different computers and programs without losing detail. Unlike JPEG files, which compress images and lose some information in the process, TIFF files can store images with no quality loss at all — though this comes at a cost in file size.
You will most often encounter TIFF files in professional settings: scanning documents at a bank, receiving medical imaging files, or working with photographs in a design studio. They are less common on the internet and in everyday consumer use because a TIFF file of the same image takes up far more space than a JPEG or PNG.
Key Takeaways
- TIFF files preserve image quality without compression, making them the standard for archival, medical imaging, and professional photography.
- A TIFF file of the same image is typically 5 to 10 times larger than a JPEG, which is why they are rarely used on websites or social media.
- Most computers can open TIFF files with built-in image viewers, but editing them usually requires paid software like Photoshop or free alternatives like GIMP.
- When you scan a document at a bank or receive a fax, the file is often saved as TIFF because the format preserves text clarity and detail.
How TIFF compression works — and why it matters
TIFF files can be stored in two ways: uncompressed (which preserves every pixel exactly as it was captured) or compressed using a method called LZW compression, which reduces file size without throwing away any image data. This is different from JPEG compression, which actually discards information to make files smaller — a trade-off you accept when you choose JPEG.
Because TIFF files do not lose information, they are the standard format for storing images that need to stay perfect: medical X-rays, legal documents, archival photographs, and professional printing. If you scan a document and need to read the fine print years later, TIFF is the safer choice than JPEG. The downside is that an uncompressed TIFF file can be 50 megabytes or larger, while the same image as a JPEG might be 2 to 5 megabytes.
When you will encounter TIFF files in real life
Banks and government offices often scan documents as TIFF files because the format preserves the sharpness of text and signatures. If you submit a mortgage application or request your birth certificate, the scanned copy you receive might be a TIFF. Medical facilities use TIFF for the same reason — X-rays, CT scans, and other diagnostic images need to be stored without any loss of detail.
Professional photographers and designers sometimes work with TIFF files during the editing process, then convert to JPEG or PNG for final delivery. Printing companies may request TIFF files for large format projects because the format does not degrade the image quality. On the internet, you will rarely see TIFF files because web browsers load them slowly and they take up unnecessary bandwidth.
How to open and view TIFF files
Most computers come with built-in image viewers that can open TIFF files. On Windows, the Photos app or Windows Photo Viewer will open a TIFF. On Mac, Preview opens TIFF files by default. On Linux, image viewers like Eye of GNOME or Feh handle TIFF without any extra software needed.
If you need to edit a TIFF file, you have options at different price points. Adobe Photoshop is the professional standard but costs money through a subscription. GIMP is a free alternative that handles TIFF editing well, though it has a steeper learning curve. Smaller tasks like rotating or cropping a TIFF can often be done in your computer's built-in image viewer without installing anything new.
Converting TIFF files to other formats
If you have a TIFF file and need to share it online or use it on a website, converting it to JPEG or PNG is straightforward. On Windows or Mac, you can right-click the file, choose "Open With," and select an image editor, then use "Save As" to choose a new format. Free online converters like CloudConvert or Zamzar also accept TIFF uploads and can convert to JPEG, PNG, PDF, or other formats in seconds.
When you convert a TIFF to JPEG, you will lose some quality because JPEG uses compression that discards data. The difference is usually not noticeable unless you are working with text-heavy documents or images that need to stay sharp. If you are converting a TIFF scan of a document, PDF is often a better choice than JPEG because PDF preserves text clarity and is easier to search.
TIFF versus other common image formats
| Format | File Size | Quality Loss | Best For |
|---|---|---|---|
| TIFF | Very large (5–50 MB) | None (lossless) | Archival, medical imaging, professional printing |
| JPEG | Small (0.5–3 MB) | Yes (lossy) | Photos on websites, social media, email |
| PNG | Medium (1–10 MB) | None (lossless) | Graphics, screenshots, images with transparency |
| Medium (1–5 MB) | None (lossless) | Documents, scans, forms, printing |
Why TIFF is fading in everyday use
TIFF was designed before the internet became the primary way people share images. Today, JPEG and PNG dominate because they are smaller, faster to upload, and supported everywhere. Most phones and cameras save photos as JPEG by default, not TIFF. Cloud storage services like Google Drive and Dropbox handle TIFF files, but they take up more of your storage quota than other formats.
TIFF remains the standard in industries where quality cannot be compromised — medicine, law, archival work, and professional printing. But for everyday use, TIFF has largely been replaced by PNG for lossless storage and JPEG for photos. If you encounter a TIFF file, it is usually because a professional or institutional system created it, not because someone chose it for convenience.
Frequently Asked Questions
Can I open a TIFF file on my phone?
Most phones do not have built-in TIFF support, but you can download a free app like ImageView or TIF Viewer from your phone's app store. Alternatively, you can convert the TIFF to JPEG or PNG on a computer first, then transfer it to your phone.
Is TIFF the same as TIFFF?
No. TIFF is the standard format. TIFF files sometimes have a .tiff extension (with two F's) instead of .tif (one F), but they are the same format — just different naming conventions. Both will open in any program that supports TIFF.
Why is my scanned document a TIFF instead of a PDF?
Some scanners and document management systems default to TIFF because it preserves image quality without compression. PDF is often better for documents because it is smaller and easier to search. You can convert the TIFF to PDF using free tools like ILovePDF or by opening it in an image editor and exporting as PDF.
Will converting a TIFF to JPEG make it look worse?
Yes, slightly. JPEG uses compression that discards some image data. For photographs, the difference is usually not noticeable. For scanned documents or images with text, the difference can be visible — text edges may look softer or slightly blurry. If quality matters, keep the TIFF or convert to PNG instead.