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I design .

I'm Ketan ‐ A Melbourne web designer and developer
with over 20 years of industry experience.

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Increasing the font size of messages in Gmail with a little CSS

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I love the new desktop design of Gmail but I find the font size of the message composition window to be too small. Amazingly Google hasn’t added any options to change the font size other than providing the default “small”, “normal” and “large” (which is too large) choices.

So I worked out a hack to do this in Chrome by using a simple extension called Stylify.

Stylify allows you to easily add CSS to any website, so here’s what I added to change the font and font-size in Gmail.

.gmail_signature > *,
.gmail_default > *,
.editable, .editable > * {
    font-size: 15px !important;
    font-family: "Helvetica Neue", system-ui !important;

Of course, this won’t send messages in this style, they’ll still use the default font and font-size for that.

Happy emailing!