InvisiProxy

InvisiProxy LTS is a web proxy service that helps you access websites that may be blocked by your network, government or policy all within your browser with no download or setup. It does this securely and with additional privacy features. Browse Tor/Onion sites in any browser, hide browsing activity and bypass filters. (Star if you fork it!). Maintained by QuiteAFancyEmerald on GitHub, where it has earned 1,494 stars from the community.

It's actively developed around nodejs, javascript, fastify, and is a solid reference for anyone building with these tools.