chromium-web-store
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"Add to Chromium" opens a download-prompt instead of installing the extension
The title explains the whole issue.
I am using Ungoogled Chromium (99.0.4844.51 | 64bit) on Manjaro Budgie.
I tried installing it with both methods (drag&drop and load unpacked).
I also changed the flag extension-mime-request-handling
to always prompt for install
Chrome's extension API doesn't allow for the direct installation of other extensions so chromium-web-store uses a hack to install them (opening the CRX in a new tab and letting your browser handle the automatic installation prompt); if this auto-install isn't working in your browser (usually fixed by setting the flag you already set) I don't think anything can be done on the side of this extension to fix it.
I was able to fix/workaround it by installing "ungoogled-chromium" & "chromium-extension-web-store" through the AUR repository. Before it was installed with flatpak.
I also stumbled upon this issue and it seems that it has something to do with the extension size.
- TinEye Reverse Image Search installs without issues
- Search by Image does not
First one is 35.64KiB and the second is 745KiB. I also couldn't install the latter via direct link.
Attempting installing unpacked extension revealed the real reason: chromium was too old for it.