What it does
Letter Counter gives you an instant breakdown of any text — characters (with and without spaces), words, lines, sentences, paragraphs, reading time, speaking time, byte size, and top words — all updated in real time as you type. No page reload, no server round-trip, no sign-up required.
Five built-in character-limit presets let you track your budget against the platforms that matter most: Twitter/X (280), SEO title tags (60), meta descriptions (160), Instagram captions (2,200), and SMS (160). A progress bar turns red as you approach each limit so you can trim copy before hitting publish, not after.
How it's built
Letter Counter is a static web application — a single HTML file, a small TypeScript bundle compiled to vanilla JavaScript, and zero backend. All counting happens in your browser using the Web Platform APIs already built into every modern browser. Your text never leaves your device.
The tool is hosted on Vercel and served from their global edge network so it loads in under 200 ms on fast 3G from anywhere in the world. The total initial transfer — HTML, JavaScript, and all assets — is under 15 KB gzip.
Privacy
Letter Counter collects no personal data and sets no cookies. Anonymous, aggregated page-view analytics are provided by Vercel Web Analytics — a privacy-friendly system that does not use tracking pixels or cross-site identifiers. See the full privacy policy.
Contact
For feedback or questions, visit letter-counter.com.