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WhatsApp Web: wider chat column

Widens the message area and lets bubbles take more width so long lines wrap less often.

Code to copy

/* Widen the conversation column so long messages take fewer lines */
#main [data-testid="conversation-panel-messages"],
#main div[role="application"] > div > div {
  max-width: none !important;
}
#main [data-testid="msg-container"],
#main div[role="row"] > div[class*="message"] {
  max-width: 78% !important;
}

How to use this example

1. Copy the code with the button above.
2. Install JustZix (2 minutes) and open the extension on the target page.
3. Add a new rule matching that page.
4. Paste the code into the rule's CSS panel and save — the effect appears instantly.