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How to Convert TIFF to PNG
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When Do You Need to Convert TIFF to PNG?
TIFF comes out of scanners, professional cameras and print workflows, and browsers and most everyday software will not open it. Converting TIFF to PNG gives you a lossless image that works everywhere, which matters when the detail in a scan is the point.
What Happens When You Convert TIFF to PNG
Sharp reads the TIFF and writes a PNG. Both are lossless, so the pixels are preserved exactly and nothing degrades. The file usually gets considerably smaller, because a TIFF is often stored uncompressed or lightly compressed while PNG applies real lossless compression. Transparency, where the TIFF has an alpha channel, is carried across. A multi-page TIFF, which is common for scanned documents, is read as a single image rather than as a series.
Worth knowing before you convert
Very large scans produce very large PNGs. A 600 DPI colour scan of an A4 page is a big image in any lossless format.
About TIFF and PNG
image/tiff
TIFF is a flexible, adaptable file format for handling images and data within a single file. It is widely used in the publishing and printing industry because it supports lossless compression and high color depth.
image/png
PNG is a raster-graphics file-format that supports lossless data compression. It supports palette-based images, grayscale, and full-color non-palette-based RGB or RGBA images. Its most notable feature is support for transparency (alpha channel).
Conversion Notes
Image conversion from TIFF to PNG preserves colour information and dimensions. If PNG uses lossy compression (such as JPEG), compression artefacts appear at lower quality settings — use quality 85+ to minimise visible loss. Transparency (alpha channel) is preserved in formats that support it; if the target format does not support transparency, transparent areas are filled with white by default.
Frequently Asked Questions
None. Both formats are lossless, so the PNG holds exactly the same pixels as the TIFF.