WhatsApp Customizer
Chrome extension that themes and customises WhatsApp Web. 3,000+ weekly users.
wwebcustomizer.com
WhatsApp Customizer restyles WhatsApp Web — themes, colours and layout tweaks — and remembers your choices across devices. It is the most-used thing I have shipped, with 3,000+ weekly users.
How it works#
The extension applies a custom theme engine over WhatsApp Web through dynamic DOM manipulation, and persists each user's settings with Chrome's storage sync so the same look follows them from one machine to another.
Like Promptin, it has to survive a host app it does not control: WhatsApp Web re-renders aggressively, so the theming has to re-apply itself rather than assume the page stays still.
Install it from the Chrome Web Store, or read more at wwebcustomizer.com.
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