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Slack: bigger message font

Enlarges the message text and loosens the line height so the content is easier to read.

Code to copy

/* Increase the message text size for easier reading */
.c-message__body,
.p-rich_text_section,
[data-qa="message_content"] .c-message__body {
  font-size: 16px !important;
  line-height: 1.55 !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.