Bold text generator
Emphasise the words that matter. Keep links ordinary.
Your text stays in this browser. No sign-up.
Tap a word to select it
31 characters · 31 UTF-16 units
Link protection & history
Links, mentions and hashtags are protected by default. History stays in this tab, up to thirty versions. Select a part of the editor or tap words, then apply. Clearing styles can merge upper/lowercase small capitals; Undo keeps the original version.
Four bold alphabets, four different shapes
Use a short bold opening in an otherwise ordinary caption. Select the words, choose a style and apply. The links-and-handles checkbox stays on by default, so an @mention or web address can remain usable inside the selected part. Undo restores the whole previous version; it does not guess the case from styled letters.
Bold characters versus a formatting button
In a rich-text editor, a Bold button keeps ordinary letters and applies formatting. Here, A becomes a different Unicode character such as 𝐀. That substitution can survive pasting into some plain-text fields, but it can also change searching, sorting and screen-reader pronunciation.
A–Z, a–z and ten digits have mappings in these four results. Accented letters such as é, other writing systems and emoji remain unchanged. A mathematical letter generally uses two UTF-16 units, so a field can reach its limit sooner even when the line looks the same length. The result reports both character and unit counts.
Choose emphasis that readers can still use
Keep the core message in ordinary text. Short bold fragments can signal a heading; turning a long paragraph into mathematical characters can make it tedious to read aloud or search. A receiver chooses the actual font and can reject characters, so paste a short test first.
For flowing bold cursive, use the existing bold script page. For a line combining bold with gothic or bubbles, use the full font mixer. These are separate tasks, rather than alternate URLs for the same converter.
Frequently asked questions
Will bold text make my Instagram username bold?
A username or handle has separate character rules from a bio or display name. Keep it ordinary. Test short styled fragments only in fields that accept them.
Can I restyle already bold characters?
Existing styled characters remain unchanged. Undo the application or convert them to normal text before choosing another style.