Spellbolt

A lightning-fast spell-checker for modern writers

Spellbolt is a blazing-fast, privacy-first spell-checker built for clarity, performance, and complete control.

It works entirely offline — no cloud syncing, no tracking, no ads — just sharp, real-time spelling corrections as you type.

Crafted for web-native writing, Spellbolt uses a precision-built typo map and a lean, multi-dialect engine to catch real-world errors without ever slowing you down.

From blog posts and emails to documentation and chat, Spellbolt keeps your text clean — without ever touching the internet.

Who it's for:

⚡ Writers, coders, and content creators who value speed and simplicity
🔐 Privacy advocates and professionals in secure environments
🌎 Multinational users needing smart English dialect support [🇬🇧 🇺🇸 🇨🇦 🇦🇺]
💬 Users frustrated with cloud-based bloatware and upsell fatigue

Key Features:

- Real-time typo correction powered by an optimized typo→correction engine
- 100% offline — no data ever leaves your browser
- Supports American, British, Canadian, and Australian English
- Great for markdown, documentation, and everyday web writing
- Based on HarperJS core, extended with custom enhancements
- No popups, tracking, subscriptions, or creepy AI logs
- Lightweight, fast-loading, and memory-efficient

Unlike bloated grammar suites or data-harvesting AI tools, Spellbolt stays lean, focused, and local.

Your words, your browser — corrected instantly.