mediarlos

Simple Accessibility Tools adds a configurable accessibility toolbar to public WordPress pages to improve reading comfort and navigation.
Included features:
<ul>
<li>Increase and decrease font size.</li>
<li>High contrast mode.</li>
<li>Visual filters: normal, sepia, inverted, negative, and grayscale.</li>
<li>Reading line that follows the cursor.</li>
<li>Increased text, word, and line spacing.</li>
<li>Readable font mode.</li>
<li>Link highlighting.</li>
<li>Pause animations.</li>
<li>Hide images, videos, and iframes.</li>
<li>Large cursor mode.</li>
<li>Reset visitor preferences.</li>
<li>Visitor preference persistence with localStorage.</li>
<li>Admin settings panel with checkboxes to enable or disabPlugin Checkle each option.</li>
<li>Language selector: Spanish, English, and French. English is the default language.</li>
<li>“Buy me a coffee” support link inside the admin settings panel.</li>
</ul>
When activated, the plugin inserts the toolbar on the frontend using <code>wp_footer</code>. Visible options and language are managed from Settings > Simple Accessibility Tools.

Simple Accessibility Tools

Adds a floating accessibility toolbar to the WordPress frontend.

Robert Chapin

Input fields on the WordPress admin screens have been nearly invisible since version 2.7. After a year of hacking CSS files to work around this problem, Matt suggested I make a plugin to override core CSS values. This plugin does just that.
Fix Admin Contrast now also corrects white point issues on iPad and similar displays. Without this plugin, the administrative table colors can look the same as the background color.
If you need even more contrast, consider my plugin called <a href="https://wordpress.org/plugins/high-contrast-admin/" rel="ugc">High Contrast Admin</a>

Fix Admin Contrast

Improves the visibility of administrative form fields and tables.

Simple Accessibility Tools vs Fix Admin Contrast