Question 1

Why test from a server rather than my browser?

Accepted Answer

Your browser may have a session, a cookie or a cached copy that a game server or a bot does not. A request from a server sees what they see.

Question 2

What does CORS change?

Accepted Answer

An img tag does not need it. A page that reads the pixels, such as a canvas, a screenshot or some NUI code, needs Access-Control-Allow-Origin on the response.

Question 3

Why is my address refused?

Accepted Answer

Only http and https are tested, and addresses on private, loopback or link-local networks are never requested, including through a redirect.

Question 4

Does the tool download the image?

Accepted Answer

No. It sends HEAD requests, which return headers only, and stops after 5 seconds.

Will this image URL load?

Questions

Related

Your first file online in a few minutes.

Will this image URL load?

Questions

Why test from a server rather than my browser?+

What does CORS change?+

Why is my address refused?+

Does the tool download the image?+

Related

Your first file online in a few minutes.