If you run under Windows, you can use the WICImage (aka Microsoft Windows Imaging Component).
It supports BMP, GIF, ICO, JPEG, PNG, TIFF, and Windows Media Photo.
I used it for a long time (still use somtimes) untill I switched to professional imaging libraries.
In Delphi is incapsultaed under TWICImage class (Graphics unit), in Lazarus I don't know but I think should be.
I use only tiff files for analisys and I never had any issues with it.