This is a free tool built on my free time. Be kind & try to give as much detail as possible.
Some fonts are not correctly rendered. This is a know issue due to 3rd party library used by this tool.
Please don't open issue about some characters of a font not rendering correctly (unless you're sure this is not a "normal" issue), just try to find an alternative font.
Not all emojis are correctly rendered. this is a know issue due to 3rd party library used by this tool.
You can try to use another version of the same emoji, for example, use 🤍 instead of ❤️.
Please don't open issue about a single emoji not rendering as expected.
If you have knowledge about Three.js and/or How SVG works, please take a look at this Three.js issue.
You'll need a Github account to create issue