When looking at Minecraft mods, modpacks, plugins and resource packs on curseforge.com, Modrinthify automatically searches modrinth.com for the mod and shows you a redirect button if it finds it. If you click on that button you will be taken to the project's Modrinth project page
The extension will also show the creator's donation page whenever present
The extension is available for firefox, chrome and as a userscript, spigot userscript
Redirects on spigotmc.org:
As of version 1.5 the extension also has Modrinth notifications integration! note: this works only on firefox and chrome, not with userscripts
The source code is split into 4 folders, firefox, chrome, chrome_autogen and greasyfork, each of them contains the source code used for the platform
The chrome folder contains non-javascript files that can't be easily converted from the firefox version
The chrome_autogen folder is the output folder for convert_chrome.py, which automatically converts firefox javascript files to be compatible with chrome
Feel free to post any issues or suggestions you might have on the issues page
The chrome web store listing might update with a slight delay because of their long review times