GrammarLookup review
A free, unlimited English web checker with useful style and passive-voice checks.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
GrammarLookup is a browser-based writing tool for students, freelance writers, authors, business professionals, and other English-language users. It checks grammar, spelling, punctuation, sentence construction, passive voice, and style issues in text entered or pasted into its online editor. Highlighted problems come with suggested edits, and users can apply corrections. Rich text editing and English dialect support make it suitable for reviewing everyday documents, essays, articles, and professional writing.
The pricing model is straightforward: GrammarLookup is free, with unlimited text checking and no signup required. Its feature set covers core proofreading needs rather than dividing capabilities across paid tiers. Alongside grammar and spelling corrections, the service includes punctuation checking, sentence correction suggestions, passive-voice checking, and style issue highlighting. AI features are also included, while the rich text editor provides a workspace for entering and reviewing content in the browser.
The main trade-off is platform breadth. GrammarLookup is web-only, so it suits users who are comfortable opening a browser and working in its online editor, but it is less suitable for workflows that depend on integrations with other writing or productivity tools. Its focus is English checking, with American, British, and Australian dialect support. Choose GrammarLookup for free, unlimited browser-based proofreading and style review; choose an alternative if integrated workflows or broader platform coverage are central requirements.
GrammarLookup pros and cons
- Where it wins
- Checks grammar, spelling, punctuation, style, and passive voice
- Supports unlimited text without requiring signup
- Handles American, British, and Australian English dialects
- Where it doesn't
- Available only through the web
- Does not offer integrations
- Focused on English writing checks
GrammarLookup fact sheet, pricing and score →
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