svg-external-sprite-redownloaded

Illustrative repo demonstrating SVG sprite being always downloaded when DOM is reconstructed.

Usage

• Run any kind of server to staticly serve assets, such as npx serve
• Hit browser, and watch network console
• Browsers will re-request the sprite.svg over the network every single time the DOM is reconstructed, each second
• The pngs on the other hand get downloaded once (or sometimes twice?), and never again

Chromium

• sprite.svg can be seen to be requested every second, despite already been downloaded, and one version still present on the page
• https://bugs.chromium.org/p/chromium/issues/detail?id=1306881

Safari

• Same as Chromium
• https://bugs.webkit.org/show_bug.cgi?id=237968

Firefox

• sprite.svg only requested once. This is what I would consider to be the expected behaviour.