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

Your words, your browser — corrected instantly.