Decorative Unicode changes the characters, not just the look, so assistive technology receives different text from what a sighted reader sees. Used as an accent it is harmless; used as the only copy of important information it makes that information unavailable to some people.
The mismatch at the centre of it
A sighted reader sees a word. A screen reader receives a sequence of mathematical symbols. Both are looking at the same characters; only one of them is interpreting shapes. Everything that follows comes from that gap.
Beyond screen readers
The effects are broader than audio output. Browser find-on-page fails, so a user cannot locate the text. Text selection and cursor movement behave oddly around combining marks. Translation tools cannot process styled text. Reading modes that reflow content may strip it. Text-to-speech in any form hits the same problem.
What must stay plain
Contact details. Instructions and steps. Warnings and errors. Link text. Form labels. Navigation. Prices and dates. Anything a person needs in order to do something, rather than merely to enjoy looking at it.
What is reasonable to style
A display name alongside a plain-text bio. A decorative divider between sections. A short accent in a caption where the caption itself is plain. In each case the styled text is additive — remove it and nothing is lost.
Testing without specialist tools
Use your browser's find function on the styled text; if it cannot be found, neither can your readers. Turn on the built-in screen reader on your phone and listen to the page. Copy the text into a plain editor and see what it looks like stripped of context. Each takes a minute and catches most problems.
Why we say this on a site that sells the effect
Because the trade-off is real and users deserve to know it. Styled Unicode is a legitimate tool with a genuine cost. Telling people where that cost falls is more useful than pretending it does not exist.
References
Related tools and guides
Last updated September 2026 · Editorial policy · How we verify Unicode claims