I've created a custom tool to help me review pending Wurst Client translations. Not sure if anyone else will find this useful, but I'm quite proud of it.

Features:

Google-translates the translation back to English, so I can review translations in languages I don't speak. (I used to do this manually for every string, so this is a huge time saver.)
Uses ChatGPT to quickly highlight strings where the reverse translation differs from the original. (Not perfect, but it helps.)
Also uses ChatGPT to find mentions of Minecraft blocks, items, etc. Then it checks those against Minecraft's official translations to find inconsistencies. (I used to not do this at all since it would take too long to do manually.)
Checks for common mistakes like untranslated strings, miscapitalized Wurst features, and issues with the color codes.
Highlights names and color codes so it's easier to spot issues with them.
Includes a "bookmark" (red outline around a row) to help me keep track of where I left off. This can be moved up and down with the arrow keys and keeps its position when the page is reloaded.
Also includes shortcuts to quickly open Google Translate (G) or DeepL (D) for any selected text.

Screenshot:

A screenshot of TranslationHelper analyzing an early draft of the Korean translations in Wurst-Imperium/Wurst7#872

Example analysis: https://wurst-imperium.github.io/TranslationHelper/872_ko_kr

Source code: https://github.com/Wurst-Imperium/TranslationHelper