Recentech StudioRecentech Studio

Free AI Document Checker. Check documents for grammar, spelling, and consistency issues with free AI. Upload and review your document online — no credit card required.

Key Features & Benefits

Grammar & Spelling Check

Detect and highlight grammar errors, spelling mistakes, and punctuation issues in your document. Each issue comes with a clear explanation and suggested correction, helping you improve your writing quality and avoid embarrassing mistakes.

Tone Analysis

Analyze the overall tone of your document and get feedback on how your writing sounds to readers. The AI identifies whether your tone is professional, casual, formal, aggressive, or passive-aggressive, and suggests adjustments to match your intended communication style.

Readability Scoring

Get a readability score that indicates how easy or difficult your document is to read. The tool uses standard readability metrics and provides a grade level equivalent, helping you adjust complexity for your target audience whether they are general readers or subject experts.

Legal Clause Detection

Identify potential legal clauses, obligations, liabilities, and risk-related language in your documents. This is especially valuable for reviewing contracts, terms of service, and business agreements to flag areas that may need legal review before signing.

Style Consistency Check

Check your document for consistent writing style throughout. The AI identifies shifts in tone, voice, or formality level that may confuse readers, and suggests adjustments to maintain a unified style from beginning to end.

Overall Quality Score

Receive an overall quality score from 0 to 100 that summarizes the document's quality across all checked dimensions. This gives you a quick snapshot of how much work the document needs and helps you prioritize which areas to improve first.

PDF or Text Input

Upload a PDF file or paste text directly — whichever is more convenient. PDF text extraction happens client-side for privacy, with only the extracted text sent to the AI for analysis. Your original files never leave your browser.

Selective Checking

Choose exactly which checks to run: Grammar, Tone, Readability, Legal, or Style. Run all five for a comprehensive analysis, or focus on specific areas to get targeted feedback without waiting for unnecessary checks.

Document Checker – Frequently Asked Questions

What does the Document Checker analyze?
The checker analyzes five dimensions: Grammar (spelling, punctuation, and grammatical errors), Tone (the overall voice and how it sounds to readers), Readability (how easy the text is to understand), Legal (potential legal clauses and risk language), and Style (consistency of writing throughout the document). You can select which checks to run.
How accurate is the grammar check?
The AI grammar check detects a wide range of common errors including subject-verb agreement, tense consistency, punctuation issues, and commonly confused words. It is comparable to premium grammar tools for most standard writing, but may occasionally miss nuanced or context-dependent errors. Always review suggestions critically.
What is the readability score based on?
The readability score considers sentence length, word complexity, paragraph structure, and overall text difficulty. It provides a grade-level equivalent (e.g., College, High School) so you can gauge whether your document is appropriately complex for your intended audience.
Is the legal check a substitute for a lawyer?
Absolutely not. The legal clause detection is an AI-based tool that identifies language commonly associated with legal obligations, liabilities, and risks. It is designed to help you spot areas that may need professional legal review. It does not provide legal advice and should never replace consultation with a qualified attorney.
Can I check documents in languages other than English?
Currently, the Document Checker is optimized for English text. It may produce results for other languages, but the accuracy and relevance of the analysis will be significantly lower. Full multilingual support is planned for a future update.
What does tone analysis tell me?
Tone analysis identifies the overall voice of your document and how it is likely perceived by readers. It can tell you if your writing sounds professional, casual, formal, assertive, or tentative. It also suggests adjustments if your tone does not match your intended communication style.
How is the overall score calculated?
The overall score is an average of the individual scores from each check type you selected (Grammar, Tone, Readability, Legal, Style). Each dimension is scored from 0 to 100. A higher score means better quality. Scores below 60 typically indicate significant room for improvement.
Is the Document Checker free?
Yes, the Document Checker is free to use with daily usage limits. Each check request counts as one use regardless of how many check types you select. No credit card is required, but you need a free account to use this tool.