Firefox is not friendly with cache
As it turned out, if the same unencrypted image is requested several times during the page loading process, it will be loaded with a new one each time. On subsequent downloads of the page, the picture will be pulled from the cache and requests will be made correctly.
UPD: Explanation of the situation
All this will happen as a result of a forced reboot by Ctrl + F5.
For example, you can look at the download process of the yahoo.com site in the FireBug's Network tab:
')
Or rivet the HTML file of the form:
<img src = "a.png"> <img src = "a.png"> <img src = "a.png">
UPD: Explanation of the situation
All this will happen as a result of a forced reboot by Ctrl + F5.
For example, you can look at the download process of the yahoo.com site in the FireBug's Network tab:
')
Or rivet the HTML file of the form:
<img src = "a.png"> <img src = "a.png"> <img src = "a.png">
Source: https://habr.com/ru/post/79433/
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