
SpellBolt by 👾DR.WATT👾
ExperimentalExperimental
English Spelling/Grammar suggestions on any text field. Running 100% Local and Private. Your data never leaves your device.
You'll need Firefox to use this extension
Extension Metadata
About this extension
A lightning-fast spell-checker for modern writers
Spellbolt is a blazing-fast, privacy-first spell-checker built for clarity, speed, and total control. It works entirely offline — no cloud syncing, no tracking, no ads — just sharp, real-time spelling corrections as you type.
Crafted from the ground up for web-native writing, Spellbolt uses a handcrafted typo map, multi-dialect English support, and a lean engine to catch real-world errors without slowing you down. Whether you're editing blog posts, crafting emails, or leaving comments, 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.
Spellbolt is a blazing-fast, privacy-first spell-checker built for clarity, speed, and total control. It works entirely offline — no cloud syncing, no tracking, no ads — just sharp, real-time spelling corrections as you type.
Crafted from the ground up for web-native writing, Spellbolt uses a handcrafted typo map, multi-dialect English support, and a lean engine to catch real-world errors without slowing you down. Whether you're editing blog posts, crafting emails, or leaving comments, 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.
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This add-on needs to:
- Access browser tabs
- Access your data for all websites
This add-on may also ask to:
- Access your data for all websites
More information
- Add-on Links
- Version
- 0.1.2
- Size
- 3.35 MB
- Last updated
- 11 hours ago (May 17, 2025)
- Related Categories
- License
- All Rights Reserved
- Privacy Policy
- Read the privacy policy for this add-on
- Version History
- Tags
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