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Turn plain text into WhatsApp bold, italic, strikethrough, and monospace — instantly. WhatsApp hides its formatting behind special symbols: asterisks for bold, underscores for italic, tildes for strikethrough, and triple backticks for monospace. Remembering the syntax (and typing backticks on a phone keyboard) is a pain, so this free tool does it for you. Type or paste your message, copy the style you want, or toggle several styles and combine them in the correct nesting order. Everything runs in your browser — your text never touches a server, there's no sign-up, and it works for WhatsApp, WhatsApp Business, and group chats alike. Perfect for making announcements stand out, striking through prices, or sharing code snippets.
*example*_example_~example~```example```Combine styles
Combined result appears hereFormatting is nice — but AI in your keyboard is better. Fix grammar, translate, and rewrite tone directly inside WhatsApp with the Synapse AI keyboard for WhatsApp.
Download Synapse FreeWrap your text in asterisks: *your text* becomes bold when you send it. This formatter adds the asterisks for you — type your message, press Copy next to Bold, and paste it into WhatsApp.
WhatsApp uses _underscores_ for italic, ~tildes~ for strikethrough, and ```triple backticks``` for monospace. Paste your text into the formatter above and copy whichever style you need.
Yes — WhatsApp supports nested formatting, like *_bold italic_*. Use the Combine styles toggles above to stack bold, italic, strikethrough, and monospace in the right order automatically.
Yes, completely free with no sign-up. Everything runs in your browser — your text is never sent to a server.
Yes — the Synapse AI keyboard for Android lets you rewrite, fix grammar, and translate messages directly inside WhatsApp, without copy-pasting from a website.