Add-ons

• dark reader
• DeepL Translate -- store
• keepa amazon tracker
• tampermonkey
• user agent switcher
• video downloadhelper -- hp

developer mode

Go to chrome://extensions/ / vivaldi://extensions/ and toggle developer mode switch.

Vivaldi

• Raspberry forum
• Raspberry tips

Command line options

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# https://www.ghacks.net/2017/02/13/how-to-speed-up-the-vivaldi-web-browser/
# optimized command for raspberry pi
/usr/bin/vivaldi \
  --process-per-site \
  --enable-low-res-tiling \
  --enable-low-end-device-mode \
  --disk-cache-size=104857600 \
  --disk-cache-dir=$TMPD \
  "$@"

Delete undeletable cookies

If you can't delete them from Settings > Privacy and Security > Cookies:

• Open Site Settings (click on the lock in the address field and selecting the last menu item)
• Go back and filter the desired site
• Delete cookies and data storage

Fix passwords not syncing

If you observe the following error in vivaldi://sync

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Error: CleanupPasswordStore@components/password_manager/core/browser/sync/password_sync_bridge.cc:1067,
datatype error was encountered: Failed to get encryption key during database cleanup.

1. close Vivaldi
2. rm -f ~/.config/vivaldi/Default/Login\ Data*
3. launch Vivaldi and the sync error in vivaldi://sync should have vanished

Video DRM/Widevine on Vivaldi

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find ~/.config/vivaldi -type d -regex ".+\(GPU\|Graphite\|Shader\|Dawn\)Cache" -exec rm -rf "{}" +

obsolete instructions

• vivaldi://flags > Override software rendering list > Enable
• vivaldi://gpu
  • on Rpi5 disable chrome://flags/#disable-accelerated-video-decode
• vivaldi://components > Widevine Content Decryption Module > check if it's loaded

See: old script, vivaldi forum, test video, another test page

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apt install libwidevinecdm0
echo '{"Path":"/opt/WidevineCdm"}' > ~/.config/vivaldi/WidevineCdm/latest-component-updated-widevine-cdm