Why TIFF files are hard to share
TIFF is a long-established format for scanning, printing, publishing and archiving. It can store very high quality images, several pages in one file, and many kinds of compression. That flexibility is also the problem: TIFF files are often huge, web browsers generally cannot display them, and many upload forms and phones will not open them. Converting to JPG or PNG gives you files anyone can view.
How to use it
- Drop your .tif or .tiff files on the page or click to choose them.
- On first use, the page downloads a small TIFF decoder (UTIF.js) into your browser. Only the decoder is downloaded; your files are never sent anywhere.
- Choose the output: JPG (default) or PNG.
- Set the quality for JPG and, if you like, a maximum width.
- Download single images or everything as one ZIP.
Multi-page TIFFs
Scanner software often puts several pages into a single TIFF file. This tool converts every page into a separate image and numbers them: a file named contract.tiff with three pages gives you contract-1.jpg, contract-2.jpg and contract-3.jpg. The ZIP download keeps them together and in order.
If you need the pages back in a single document afterwards, put the images into Image to PDF, which creates one PDF with one page per image.
JPG or PNG for scans?
- Photos and color scans: JPG at a quality around 85 keeps them looking natural at a fraction of the size.
- Text documents, forms and line drawings: PNG keeps letters crisp, without the faint smudges JPG can add around text. Black-and-white pages are often surprisingly small as PNG.
High-resolution scans can be several thousand pixels wide. If you only need to read or share the page on screen, a maximum width makes the files much lighter. Keep the original TIFF if it is your archive copy: converting to JPG discards some detail, and that cannot be undone. For print sizes and resolution, see what DPI means.
When a file does not convert
TIFF allows many compression methods, and a few unusual ones, such as some JPEG-in-TIFF variants written by certain programs, cannot be read by the decoder. In that case the tool reports an error for that file instead of producing a broken image. Opening the file in the program that created it and saving it again as a standard TIFF or JPG usually helps.
Frequently asked questions
Are my scanned documents uploaded?
No. The decoder runs in your browser and the conversion happens on your device, which matters for contracts, IDs and other private scans.
Why did one TIFF become several JPG files?
The TIFF contained several pages. Each page is saved as its own image, numbered in order.
Will the JPG be the same quality as the TIFF?
JPG is lossy, so it is not identical bit for bit, but at high quality settings the difference is hard to see. Choose PNG if you need a lossless copy.
Can I make the JPG small enough for an upload form?
Yes. After converting, use Compress to a target size to get under a specific limit. More about the format is on the TIFF format page.