Open a social bio written in "ππ¨π₯π" letters with a screen reader and you'll hear something very different from what sighted readers see. Fancy bios, ππΈππΎπ π headlines and text copied from chat tools look harmless on screen. For people who use screen readers, braille displays or text-to-speech, they can turn a sentence into nonsense. This page explains what happens and how to avoid it.
How assistive technology reads text
Screen readers don't read pixels. They read the underlying characters and their Unicode meanings. If a character looks like the letter B but is actually a different code point, the screen reader has to decide what to do with it, and the answer is often not what the writer intended.
Problem 1: "Fancy font" generators
Sites that turn text into bold, italic, script or "bubble" letters don't change the font. They swap each letter for a different Unicode character, usually from the Mathematical Alphanumeric Symbols block. The character "π" is officially "MATHEMATICAL BOLD CAPITAL B".
Depending on the screen reader and settings, that word might be:
read letter by letter, with each symbol's name skipped entirely read correctly by some tools but not others
A social media bio written this way can be unreadable to a blind visitor. These characters also can't be found by normal search and may be ignored by translation tools.
Problem 2: Invisible characters inside words
Text copied from web pages, PDFs and chat tools sometimes contains zero-width spaces (U+200B), soft hyphens (U+00AD) or other formatting characters. They're invisible on screen, but a zero-width space inside a word can split it in two for software. Some screen readers then pause mid-word or mispronounce it, spell-checkers flag it, and search can't match it.
Problem 3: Look-alike letters
Some text mixes in characters from other alphabets that look identical to Latin letters, such as a Cyrillic "Π°" or Greek "ΞΏ". A screen reader set to English may mispronounce the word or switch pronunciation rules mid-sentence. It also breaks search and copy-paste for everyone.
How to check and clean text
- Avoid fancy-font generators for anything people need to read. Use real formatting (HTML bold, CSS fonts) instead; screen readers handle it correctly.
- Paste as plain text when moving content between apps.
- Make hidden characters visible. Code editors such as VS Code can highlight invisible and ambiguous Unicode characters.
- Clean the text before publishing. A browser-based cleaner such as Claude Watermark Remover can strip hidden characters, such as zero-width spaces and unusual spaces, in one pass. It runs on text you paste in, so nothing needs installing. Compare the character count before and after: a drop means something invisible was removed.
- Test with a screen reader. NVDA (Windows, free), VoiceOver (macOS and iOS) and TalkBack (Android) are built in or free. Listening to your own page for two minutes is revealing.
Don't strip everything
Some invisible characters are needed. Zero-width joiners (U+200D) hold multi-part emoji together, and scripts such as Persian, Arabic and several Indic languages use joiners and non-joiners to control how letters connect. Removing them changes the meaning or appearance of that text. Clean English copy freely, but check text in other scripts after any automatic cleanup.
The standards behind this
The Web Content Accessibility Guidelines (WCAG) ask for content that assistive technology can interpret reliably, and the W3C's introduction to web accessibility explains the principles. Using real letters and real formatting is one of the easiest ways to meet them.
A two-minute habit
Before you publish a bio, headline or post that started life somewhere else, paste it into a plain-text editor first. If anything looks odd there, fix it before it reaches your readers.
Summary
Fancy Unicode "fonts" are symbols, not styled letters. Invisible and look-alike characters can break screen reading, search and spell-checking. Use real formatting, clean pasted text, and test with a screen reader.