There are many ways to optimize SVGs. Ideally, your build pipeline does that automatically for you (e.g. via postcss-svgo).

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Read more Show archive.org snapshot

If you want to manually tweak an SVG, you can use SVGOMG Show archive.org snapshot which is an application running SVGO Show archive.org snapshot in your browser.
You should deactivate the option "Remove viewBox" because you want SVGs to be scalable by the browser.

You see a live preview of any changes you make, and can copy the SVGO source with a single click (or download the optimized SVG).