RE: Checking Text Spacing For Normal People

It’s worth noting that some solutions will not work with content in iframes. Bookmarklets won’t work, but ARC Toolkit does.



I use the Stylus browser extension, which is easy to install and configure. You only need to do so once, after which you can turn it on for any website. The nice thing is that it is persistent when you navigate from page to page, unlike bookmarklets or changes you make in the browser dev tools. It also works with iframes.



https://chromewebstore.google.com/detail/stylus/clngdbkpkpeebahjckkjfobafhncgmne?hl=en-GB



Just create a rule using the following CSS:



* {line-height: 1.5 !important;

    letter-spacing: 0.12em !important;

    word-spacing: 0.16em !important;}

p { margin-bottom: 2em !important;}



There are probably similar extensions for other browsers.



Steve Green

Managing Director

Test Partners Ltd



From: Juliette McShane Alexandria <mcshanejuliette@gmail.com>
Sent: 14 January 2026 18:40
To: Jim Homme <jhomme@benderconsult.com>; w3c-wai-ig@w3.org
Subject: Re: Checking Text Spacing For Normal People



Hi Jim,



I have two options that don't require fiddling with the CSS directly.



1. Dylan's Text Spacing bookmarklet - Can be installed very easily by dragging the 'link' to your bookmarks bar. Browser agnostic, so it's a good option for MacOS testing. Works on most pages. (https://dylanb.github.io/bookmarklets.html)

2. TPGi's ARCToolkit. It's a Developer Tools/Browser plugin, so you do need to open DevTools. The Text Spacing option is available under the "Highlight" tools. Available for Chrome and Firefox, so basically WIndows based. (https://www.tpgi.com/arc-platform/arc-toolkit/)



Best,

Juliette

On 1/14/2026 10:16:27 AM, Jim Homme <jhomme@benderconsult.com<mailto:jhomme@benderconsult.com>> wrote:

Hi,

Does anyone have a way to test text spacing for those criteria that involve it for people who don’t want to, or don’t know how to muck around with browser development environments?



Thanks.



Jim



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