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Grammar Checker

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Local AI Grammar Checker

Proofread pasted text, TXT, or Markdown locally for grammar, spelling, punctuation, and optional style improvements. Compare the original and corrected text and review only change excerpts that exist in the source.

Input
Result
Preparing your local proofreading workspace...
Private local proofreading

Source text, prompts, corrections, change explanations, sessions, and exports stay in your browser. The content is not uploaded or included in analytics.

Current limitations
  • Local models can miss errors or over-correct deliberate style; compare every revision with the complete original.
  • Academic and business modes improve surface style but do not verify facts, citations, terminology, or compliance.
  • Long text is proofread in bounded segments, so document-wide consistency may still require manual review.
  • Verified model weights normally remain cached across refreshes, but clearing site data, private browsing, or browser eviction can require another download.

How the local grammar checker works

1

Paste or import text

The source is saved locally and long text is divided at stable boundaries for the current device.

2

Apply a proofreading contract

The global local model corrects bounded segments while preserving facts and returning structured change explanations.

3

Compare and export

Only changes linked to actual source excerpts appear in the table; review the complete correction before copying or exporting.

Local grammar checker FAQ

Is my writing uploaded?
What does grammar-only mode change?
Does academic mode verify citations?
Does refreshing download the model again?

Related writing tools

Rewrite text and change toneGenerate a structured report