Type your post. We Unicode-style the highlighted text so it stays bold or italic in any LinkedIn feed (mobile, web, app). No signup, no AI, no upload.
Built by Vladyslav Rybak, Founder, Croni ยท Last updated Jul 12, 2026
211 characters ยท runs entirely in your browser
LinkedIn doesn't support native bold or italic in its post composer, but it does render Unicode mathematical characters as if they were styled text. Tools like this one convert your text into those Unicode equivalents - so when you paste the result into LinkedIn, it shows up bold or italic everywhere.
This formatter works entirely in your browser. There's no upload step, no AI inference, no character limit. Paste plain text, highlight what you want to style, and copy the result. Your text never leaves your machine.
LinkedIn rewards posts that get readers to stop and engage. A bold opening line, an italicized framing question, or a monospace product name pulls eyes down the post and increases dwell time - which the algorithm reads as a signal to show your post to more people. The effect is real and measurable, especially in the first three lines (which control whether 'See more' gets clicked).
Unicode-styled text doesn't read aloud cleanly in screen readers (it pronounces letters as 'mathematical italic lowercase a' etc.). If your audience meaningfully includes screen-reader users, use formatting sparingly - bold a keyword, not an entire paragraph. Don't replace headings or body text with styled Unicode in long-form posts intended for accessibility.
Yes - completely free, no signup. The formatter runs in your browser; nothing is uploaded or stored.
Yes. The formatter uses Unicode mathematical characters that render identically on LinkedIn web, iOS, Android and the mobile site.
Yes - anywhere that supports Unicode (X, Threads, Bluesky, Notion, Slack, etc.). It also works in email subject lines and most messaging apps.
Not perfectly. Screen readers pronounce styled Unicode characters individually ('mathematical italic capital H'). Use bold for emphasis on a keyword or two - don't replace entire sentences with styled text in posts targeted at accessibility-first audiences.
Yes. This formatter is a free standalone tool, but our main product (Croni Publish) writes the post in your voice and auto-publishes it to LinkedIn natively. Free to try.
