Web Performance & Accessibility

11/11/2026
Diagnose slow or difficult-to-use websites and improve performance, accessibility and reliability.

How to Check Whether a Website Form Works With a Screen Reader

A form may look clear but still fail when labels, error messages, focus order, or status updates are not exposed to assistive technology. Checks to make Test keyboard-only navigation and a screen reader, confirm each field has a programmatic label, associate instructions and errors with controls, announce submission status, and ensure focus moves...

Why Does a Web Page Shift While It Is Loading?

Layout shifts often come from images without dimensions, late fonts, banners, or asynchronous content. Checks to make Use browser performance tools to identify shifts, set image dimensions, reserve dynamic UI space, and test fonts across devices. When to get help Web performance work can reduce instability and improve usability. Informatix Systems...

How to Make Mobile Navigation Easier to Use With a Keyboard

A mobile navigation menu may look simple but behave unpredictably for keyboard and screen-reader users. Focus can remain behind the overlay, close controls may be unreachable, or the menu state may not be announced. Test the complete menu journey Open the menu with keyboard activation, move through each link, close it with the visible control and...

How to Check Color Contrast on Buttons and Form Text

Buttons, labels, and form text may appear clear on one monitor but become difficult to read on a phone or in bright light. Color contrast should be checked for normal text, larger text, focus indicators, disabled states, and errors—not only the main page background. Review the actual interface states Use a contrast checker with the rendered foreground...

How to Check Whether a Third-Party Script Blocks an Accessible Website Control

A page may work correctly until a third-party script loads and changes focus, overlays a control, or delays interaction. Common sources include chat widgets, tag managers, analytics, consent banners, and advertising code. These scripts can affect both performance and accessibility. Isolate the script Reproduce the issue on a staging copy or in an...

How to Prevent Layout Shifts When Images Load on a Web Page

When images appear after text, a page can jump and move links or buttons away from the user's pointer. This layout shift is frustrating on mobile and can make forms or navigation difficult to use. The browser needs enough information to reserve space before the image downloads. Give the browser layout dimensions Set width and height attributes or an...

How to Make Error Messages on a Website Form Clear and Accessible

Users need to understand what failed, how to fix it, and where the problem is, including when using assistive technology. Checks to make Use plain language, identify the affected field, preserve entered data, link instructions to the control, announce errors, and move focus predictably. Test keyboard and screen reader behavior with both inline and...

How to Make Cookie Consent Controls Work With a Keyboard

A consent banner can block content or trap focus if its controls do not follow keyboard and focus expectations. Checks to make Navigate with keyboard only, confirm buttons have clear names, manage focus when the banner appears and closes, and ensure consent preferences can be reopened. Test zoom and screen reader announcements without preselecting...

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