[RESOLVED] GD2 Thumbnail Quality

[Sayian]

When using GD2 , My thumbnails are coming out extremly low quality.

Is anyone experianced with anything i could change to make the thumbnails of higher quality. They are coming out pretty bad.

Thanks.

[drew010]

if you use jpeg, the 3rd paramter of imagejpeg is the quality. default is 75, so you can try raising it to something around 90, this is usually what i do for thumbs. but also if you resize a thumbnail disproportionately it can cause it to look distored and of poor quality.

[Sayian]

Hello Drew ,

thanks for letting me know the arguments it takes.

ive looked it up in the manual , and indeed , the 3rd arguement after the string name , is the quality. from 0-100

Id like to set this at 90 ,

my php code is

				$function_to_read = "ImageCreateFrom".$function_suffix;
				$function_to_write = "Image".$function_suffix;

			// Read the source file
			$source_handle = $function_to_read($images_dir."/".$filename); 

the value of $function_suffix is the file type , its all mostly Jpgs anyway. So $function to read would be ImageCreateFromJPEG($images_dir."/".$filesname,90) But when i try that , the photo comes out in a black line , no picture.

Am i setting the arguement wrong?

[drew010]

actually the functions that take the quality parameter arent the create functions, they are the ones to output it. you load it like normal but when you do imagejpeg($source_handle) you will change it to imagejpeg($source_handle, '', 90);

[Sayian]

Thanks drew , i dont see a close thread button anymore , so ill just state that this has been resolved.

[drew010]

its at the top, under the thread tools menu.