What changes when TIFF becomes JPEG
TIFF is a container for many combinations: compressed or uncompressed strips, multiple pages, alpha, high bit depth and sometimes CMYK. The local decoder states what it found, renders a page into browser-readable pixels and then hands those pixels to the same JPEG encoder used by the rest of the converter.
A TIFF alpha channel needs the same matte decision as a PNG. CMYK and deep inputs need a colour and depth reduction before an ordinary web JPEG can be produced; the queue names those cases so the output is not mistaken for an archival equivalent.
A short, inspectable workflow
- Drop one TIFF file or a whole selection. The queue reads the signature inside each file instead of trusting its extension.
- Inspect the detected type, dimensions and any format notice on each row before conversion.
- Choose JPEG quality and, where transparency exists, the colour that must replace it.
- Choose whether ordinary EXIF data survives and whether GPS coordinates are removed.
- Convert the queue. Three or more finished files download as one ZIP so the browser does not open a stack of save prompts.
What the conversion cannot preserve
Multi-page structure, 16-bit channel precision, layers, spot colours and production-specific TIFF tags cannot live in the resulting JPEG. The route is for a viewing or upload copy. The TIFF remains the master for scanning, print production and later correction.
A converted file is a new JPEG, not the original format with a different filename. Keep the source whenever animation, layers, high bit depth, transparency or repeated future edits might matter.
Questions about this input
- Which page of a multi-page TIFF is converted?
- The queue reports the page count and renders the page selected by the decoder workflow. JPEG itself has no multi-page container, so pages cannot remain bundled in one JPG.
- What happens to 16-bit TIFF colour?
- The decoder reports deep input and reduces it to the 8-bit channels the browser canvas and ordinary JPEG writer use. Keep the TIFF for tonal editing or archival work.
- Does the DPI survive?
- The input DPI is reported. Pixel dimensions determine the picture; a receiving application may interpret print size from metadata differently, so verify physical size in the print workflow.
Decoding and encoding both happen on this computer.