TIFF to JPG Converter

A TIFF to JPG converter turns a TIFF or TIF image into a JPG, which is usually a small fraction of the size. TIFF is the format scanners, fax software and print shops reach for, because it can hold an image with no loss at all. That care costs space. A letter-size color page scanned at 300 dpi is 2550 x 3300 pixels, about 25 MB of raw image data, and a TIFF saved without compression keeps nearly all of it. That is too large for many email attachments and upload forms, and many browsers will not display a TIFF at all. A JPG of the same page opens almost anywhere.

The TIFF is read by UTIF, an open source decoder that this page downloads the first time you add a TIFF file. It handles uncompressed TIFFs and the compression methods scanners and fax software write: LZW, ZIP (Deflate), PackBits, JPEG, and CCITT Group 3 and Group 4, the black-and-white fax codecs. A file that uses a method the decoder cannot read, such as JPEG 2000 inside a TIFF, is refused with the method code in the message, rather than being turned into a black rectangle.

Three things change on the way to JPG. Only the first page of a multi-page TIFF is converted, and the note under its row says how many pages the file had. Images with 16 bits per channel come down to 8, which is all a JPG can hold. And transparent areas are filled with white; the note mentions it only when the image had transparent pixels. The Quality slider runs from 10% to 100% and starts at 90%, and moving it converts every added file again.

The conversion is client-side. Your browser decodes the TIFF, draws it onto a canvas and encodes the JPG, so the scan never leaves your device, which matters when the page is a contract, a medical form or a copy of an ID. EXIF fields, GPS coordinates and embedded color profiles are not copied into the JPG. TIFF files over 300 MB and images over 100 megapixels are refused with a message instead of freezing the tab. It is free, no signup, with a daily cap on conversions.

Each file is identified by its first bytes, not by its name. DNG and CR2 camera RAW files are built on the TIFF structure, so a RAW file dropped here is recognized and pointed to the converter for its own format.

• The TIFF is decoded and the JPG is encoded inside this browser tab. The only thing downloaded is the TIFF decoder script, and the image itself is never uploaded.
• The daily limit check sends the tool name and a device identifier, plus your account token if you are signed in. It carries nothing from your files.
• After a batch, the page records how many files converted, their combined size in bytes and the output format. File names and image content are never sent.
• If the limit check cannot reach the server, the conversion still runs.
• EXIF fields, GPS coordinates and embedded color profiles are not written into the JPG, because it is rebuilt from decoded pixels.
• Converted JPGs stay in the tab's memory until you remove them, press Clear All or close the page.