# SpellBolt

> English Spelling/Grammar suggestions on any text field. Running 100% Local and Private. Your data never leaves your device.

Canonical page: [https://chrome-stats.com/d/spellbolt](https://chrome-stats.com/d/spellbolt)

## Overview

- **ID:** `spellbolt`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** 👾DR.WATT👾
- **Category:** privacy-security,language-support
- **Daily users:** 41
- **Weekly downloads:** 7
- **Rating:** 5.00 / 5 (3 ratings)
- **Version:** 0.1.9
- **Last updated:** 2025-06-10
- **First published:** 2025-05-14
- **Size:** 3.38 MB
- **Data as of:** 2026-09-03
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/spellbolt/)
- **Website:** [https://spellbolt-privacy-policy.glitch.me/](https://spellbolt-privacy-policy.glitch.me/)
- **Privacy policy:** [https://addons.mozilla.org/firefox/addon/spellbolt/privacy/](https://addons.mozilla.org/firefox/addon/spellbolt/privacy/)

## Description

A lightning-fast spell-checker for modern writers

<strong>Spellbolt</strong> 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:
<ul><li>Real-time typo correction powered by an optimized typo→correction engine</li><li>100% offline — no data ever leaves your browser</li><li>Supports American, British, Canadian, and Australian English</li><li>Great for markdown, documentation, and everyday web writing</li><li>Based on HarperJS core, extended with custom enhancements</li><li>No popups, tracking, subscriptions, or creepy AI logs</li><li>Lightweight, fast-loading, and memory-efficient</li></ul>
Unlike bloated grammar suites or data-harvesting AI tools, <strong>Spellbolt</strong> stays lean, focused, and local. 

Your words, your browser — corrected instantly.

## Rankings

- #17,438 — Overall

## Permissions and access

### Permissions

- `tabs`
- `storage`
- `activeTab`
- `webRequest`

### Host permissions

- `<all_urls>`

### Content script matches

- `<all_urls>`

## Safety

- **Risk impact:** High risk impact
- **Risk likelihood:** Low risk likelihood

### Analysis details

- Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
- This extension has low user count. Unpopular extensions may not be stable or safe.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

## Similar extensions and apps

- [SmartSpell](https://chrome-stats.com/d/smartspell) — 3 users
- [OTP Spell Corrector](https://chrome-stats.com/d/otp-spell-corrector) — 2 users
- [Autocorrect Typos & Text Snippets: KeyCorrect](https://chrome-stats.com/d/autocorrect-typos-keycorrect) — 199 users, 4.25 / 5
- [FluentTyper](https://chrome-stats.com/d/fluenttyper) — 196 users, 4.85 / 5
- [Aar318's Smart Proofreader](https://chrome-stats.com/d/aar318-s-smart-proofreader) — 1 users, 5.00 / 5
- [AI Grammer Checking by SpellFast](https://chrome-stats.com/d/spellfast-ai) — 31 users, 3.00 / 5
- [Spell Checker](https://chrome-stats.com/d/spell-checker) — 302 users, 3.00 / 5
- [Typo - Smart Text Rewriter](https://chrome-stats.com/d/typo-smart-text-rewriter) — 1 users
- [Spelling Corrector](https://chrome-stats.com/d/spelling-corrector) — 4 users
- [Typeright: Grammar & Spelling Checker](https://chrome-stats.com/d/typeright) — 165 users, 4.00 / 5
- [Cleverly Write](https://chrome-stats.com/d/cleverly-write) — 1 users
- [WordServe](https://chrome-stats.com/d/wordserve)

---

Source: [Chrome-Stats](https://chrome-stats.com/d/spellbolt)