pdf+mathjax
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Extension summary
PDF viewer for chrome, with ability to render LaTeX in text annotations.
It can add text annotations when the ꕯ button is pressed, and instantly render it as LaTeX when exiting editor (click somewhere else, or press Esc to exit editor). You can drag the text box to move it. You can cut the text box then paste it to other pages of the document.
If you don't like the editor, you can just use it as a PDF viewer. After adding text annotations through other software, then the viewer can render LaTeX contained in your annotation.
Since LaTeX is saved as string rathar than image, it can be edited after saving and reopening.
It contains PDF.js version 3.11.174 [ce8716743] and MathJax version 4.0.0-beta.3 so it doesn't need remote hosted code, so it can be used offline.
Ctrl+O: open file Ctrl+S: save file
Extension safety
Risk impact
pdf+mathjax requires a few sensitive permissions. Exercise caution before installing.
Risk likelihood
pdf+mathjax has earned a good reputation and can be trusted.
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