Changed picture has more bytes than the original one

See all posts See thread Reply

Re: Changed picture has more bytes than the original one new!
by colin, 13 years, 12 months ago
The image is decompressed by the class, and then recompressed. If it is a JPEG, you can change the setting jpeg_quality, which is set to 85 by default.

You may want to use a tool such as ImageMagick identify to compare the two images, and see why the resulting image is bigger in size.Reply
Re: Changed picture has more bytes than the original one new!
by Douglas, 13 years, 12 months ago
Thanks for the info.

Is it possible to "read" the compression rate of an uploaded image so i can use it for the setting jpeg_quality? For instance when I got a jpeg with a compression rate of 70% I don't want the Upload class to make 85% when it creates the result picture.Reply
Re: Changed picture has more bytes than the original one new!
by colin, 13 years, 12 months ago
No, it is not possible to read the JPEG quality setting with which the image has been compressed. See for instance hereReply