There are 3 main methods used to stonewall the saving of images from online content.
1. embed in flash/pdf
2. javascript to interrupt right clicking
3. overlaying a transparent image to capture the click
I say 'stonewall' because as a general rule: If the user can see/hear it then the user can save it. Most often in the pristine format supplied.
Content providers should be aware of this already and simply not make commercially-useful content available online. (E.g. by using low resolution/overly compressed or watermarked images.)
Where degraded quality is acceptable: Consider that even the least technical person you know is able to pickup a camera and point it at their screen.
1. embed in flash/pdf
2. javascript to interrupt right clicking
3. overlaying a transparent image to capture the click
I say 'stonewall' because as a general rule: If the user can see/hear it then the user can save it. Most often in the pristine format supplied.
Content providers should be aware of this already and simply not make commercially-useful content available online. (E.g. by using low resolution/overly compressed or watermarked images.)
Where degraded quality is acceptable: Consider that even the least technical person you know is able to pickup a camera and point it at their screen.