CODEWITHSUNDEEP
image-processingimagemagickgraphicsmagick
d-_-b
d-_-b

Reputation: 4502

GraphicsMagick Error: gm convert: profile matches sRGB but writing iCCP instead

When I try to convert a jpg image to a png, I get the following errors message occasionally. What does it mean? 

> gm convert xxx.jpg png32:xxx.png
gm convert: profile matches sRGB but writing iCCP instead (xxx.png).

Upvotes: 1

Views: 1678

Answers (1)

Glenn Randers-Pehrson
Glenn Randers-Pehrson

Reputation: 12465

It's not an error but a warning.

Your input file (xxx.jpg) contains an ICC profile that represents sRGB. The png writer notices that, and issues a warning (because writing a 13-byte sRGB chunk is more efficient than writing a multi-kilobyte iCCP chunk). These days, even the sRGB chunk is wasteful if your image is intended to be displayed by a browser, because browsers assume that pixels are in the sRGB colorspace anyhow, when there is no color information present in the PNG file.

Upvotes: 2

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