Online Proofreader
The best 50 Online Proofreader AI tools - Free & Paid
Explore 50 AI for Online Proofreader
WProofreader offers AIâdriven, multilingual spelling, grammar, and style checking for 20+ languages. It provides SDKs, an API, browser extensions, and CMS modules, with TLS encryption, GDPR compliance, onâprem or AWS hosting, and customizable industry rules.
Freemium
This AI tool is a free online writing assistant with advanced features to enhance writing skills and prevent plagiarism.
Freemium
Scribbr offers academic writing support with professional editing, plagiarism detection, citation generation across styles, AIâpowered proofreading, paraphrasing, summarizing, sentence rewriting, and a Chrome extension for inâbrowser citations, helping students and researchers produce polished manus
Freemium
LanguageTool is an AI grammar, spelling, and style checker supporting 30+ languages. It offers realâtime browser extensions, desktop and Word addâins, advanced Picky Mode, paraphrasing, and an API for developer integration.
Free
Outwrite is an AI assistant that instantly corrects spelling, grammar, and punctuation across Chrome, Edge, Google Docs, and Word. It provides realâtime readability scores, offers style and paraphrasing suggestions, and converts passive to active voice in English, French, and Spanish.
Free
- $6.95/mo
Webâbased grammar checker supporting 27 languagesâincluding Tagalog and English variantsâhighlights spelling, grammar, punctuation errors and offers corrections. It accepts rich text up to 15,000 characters, detects GPTâstyle typos, and includes an AI content detector, usable from any browser.
Free
ProWritingAid is an AI writing assistance tool that offers suggestions for grammar, style, and improvement with the touch of a button.
Freemium
Rewrites text in seven stylesâSimple, Creative, Formal, etc.âacross 17 languages, preserving meaning while enhancing grammar, punctuation, and readability. Removes duplicate phrases for plagiarismâfree output and works with plagiarism/readability tools for students, writers, and SEOs.
Paid
- $3
Paraphrase Online is a free tool for rephrasing text, supporting multiple formats and languages. It features five paraphrasing modes to customize output while ensuring grammatical accuracy and preserving original meaning, ideal for avoiding plagiarism.
Freemium
editGPT is a Chrome extension that turns ChatGPT into a writing assistant. It provides realâtime grammar, style, and rewriting support in 80+ languages, preserves formatting, tracks changes, and manages revisions.
Free
- $10/mo
Hemingway Editor analyzes text for readability, highlighting long or dense sentences, adverbs, and passive voice, suggests simpler wording, andâvia Editor Plusâadds AI-assisted fixes, advanced grammar checks and tone controls for faster revision.
Free trial
PunctuationCheck is an AI tool that instantly corrects punctuation, grammar, and spelling, offering manual or batch edits. It supports regional English variants, basic formatting, PDF export, and processes text locally for privacy.
Free
CorrectEnglish is an AI writing assistant delivering spelling, grammar, and style corrections on Android, iOS, and browsers. It offers contextual word suggestions, error detection, a plagiarism checker, formatting guides, readability scores, and integrates with extensions and research tools.
Freemium
- $24/mo
QuillBot is a writing and editing tool offering features such as paraphrasing, grammar and plagiarism checks, citation generation, and content creation assistance, all accessible through a Chrome extension or online platform.
Freemium
- $33/mo
Wordvice AI provides realâtime grammar checking, paraphrasing, translation, summarization, plagiarism and AIâcontent detection, plus citation generation across multiple languages. It integrates with Chrome and Word, supporting students, researchers, professionals, teams, and offers onâdemand human e
Freemium
- $8.45/mo
Smart Online Notepad is a flexible writing tool that offers AI grammar correction, tone adjustment, real-time word counting, and easy note sharing. It supports multiple languages and has a user-friendly design with dark and light modes.
Free trial
InstaText is an AI editing assistant that highlights suggestions for clarity, flow, word choice, and grammar. Users can accept or reject each change, select dialect, formality, or add custom terms. It works on Chrome, Gmail, Slack, Docs, Overleaf, and Word.
Paid
- $9.99/mo
Check Typo is an AIâpowered spellâchecker extension that integrates into web forms, Gmail, LinkedIn, and social media drafts, supporting 100+ languages and preserving tone while providing realâtime corrections for students, professionals, and writers.
Free
AI-based plagiarism remover rewrites duplicate text while preserving context and readability, offering modes (Word Changer, Formal, Shorten), file upload/download, 15+ languages and integrated tools for checking, paraphrasing, grammar, summarizing and citation generation and export.
Free
PaperTyper generates academic drafts from prompts, offering builtâin plagiarism checking, grammar correction, and citation formats (MLA, APA, Chicago, Harvard, Turabian). Users can edit, format, and export content as Word or PDF at any time.
Free
MyPerfectWords connects students and researchers with qualified writers holding advanced degrees across 140+ disciplines. A threeâstep review ensures proper structure, citations, and formatting. Each submission includes Turnitin and AI originality checks. 3âhour urgent turnaround and 24/7 chat suppo
Paid
Quetext is an allâinâone writing platform offering plagiarism detection, AI content detection, realâtime grammar and spell correction, summarization, paraphrasing, and citation generation. It supports PDF, DOC, TXT files with bulk uploads for students, teachers, researchers, and creators.
Freemium
- $8/mo
TextAdviser delivers AIâpowered language tools: grammar checking, plagiarism detection, syntactic analysis, fast text generation, rewriting, tone humanization, summarization, and name/title creation. It supports English, Spanish, Portuguese, Italian, French, and German for writers, students, markete
Free
Online Word Editor is a versatile AI writing assistant that allows users to generate, rewrite, translate, and summarize text, facilitating faster content creation and refinement for students, professionals, and content creators across various writing skill levels.
Free
Rewording Tool uses AI to rewrite text for clarity and natural flow while preserving meaning. Select from ten stylesâformal, casual, academic, etc.âin over 25 languages. Paste or upload, and instantly receive polished sentences for essays, reports, marketing, or business communication.
Free
Reescribir Textos es una herramienta AI que reestructura oraciones, pĂĄrrafos y artĂculos manteniendo su significado, con modos sencillo, medio, formal e inteligente. Permite pegar, subir archivos y descargar resultados en DOC, facilitando la generaciĂłn de contenido Ăşnico y legible.
Free
AIGrammarChecker is a free AI-powered tool that instantly corrects grammar, spelling, and punctuation errors. It analyzes text structure and context to improve writing clarity and supports multiple languages via text input or file uploads.
Free
Revise is an AI editor for proofreading, grammar and style refinement that preserves author voice, offers customizable style rules and edit intensity, model choices, tracked accept/reject edits, in-document chat, speech-to-text, and team versioning.
Free
- $8/mo
ParagraphAI offers realâtime grammar correction, oneâtap email drafting, and instant summarization of web pages and PDFs. It provides multilingual translation, customizable tone filters, a template library, and an instruction engine for repetitive tasks across mobile, desktop, and Chrome.
Free
NoPlagio checks uploaded documents against 80âŻmillion academic articles and live web sources, supporting 129 languages. It gives similarity scores, colorâcoded plagiarism types (citation, paraphrase, improper reference), source links, and protects privacy by never storing files.
Freemium
FuturePerfect scans every public page of a website for spelling and grammar errors in 30 languages, delivering instant alerts and a dashboard of correction suggestions. No code integration requiredâjust a URL to keep content errorâfree and professional.
Freemium
Reword Generator rewrites text using contextâappropriate synonyms while correcting grammar and punctuation. Paste or upload files (.txt, .doc, .pdf) and select tones such as Formal, Informal, Academic, or SEO. Supports up to 200 words per edit for academic or marketing content.
Paid
Textbuddy is an AIâpowered rewriter and plainâEnglish editor that flags long sentences, complex words, passive voice, and filler words, providing a readability score. It offers synonyms, CEFR language levels, keyword repetition stats, and supports over 50 languages.
Subscription
RewriterâŻPROâŻAI converts machineâgenerated text into natural, detectorâproof language with adjustable fluency (basic, intermediate, advanced). Users set toneâformal, creative, etc.âand target audiences across emails, proposals, blogs. It supports multiple languages and offers instant grammar correct
Free
TextGears is a grammar and spell checker with an API for automated proofreading, readability scoring, and text analysis. It supports multiple languages and offers both cloud-based and self-hosted deployment for integration into various business workflows.
Subscription
PolitePost.net is a Microsoft Word addâin that rewrites draft emails to improve tone, remove jargon, and fix grammar while preserving intent. It delivers polished versions in seconds, supports multiple style guidelines, and maintains data privacy.
Freemium
RewriterPRO turns AIâgenerated text into natural, humanâlike language, offering tone, fluency, length, and language customization. It bypasses detectors such as Turnitin, supports bulk rewriting, and delivers SEOâsafe, consistent content on desktop or mobile.
Free
Word Spinner is an AIâpowered writing assistant that improves tone, flow, and readability for blog posts, emails, ads, and web copy. It offers grammar checks, tone analysis, and a Chrome extension supporting 100+ languages.
Subscription
- $29/mo
Grammar Checker is a free AI tool that corrects grammar, spelling, and punctuation errors. It also provides suggestions to improve your writing style and polish your text.
Free
JustDone AI is an AI-powered assistant for research, writing, and studying, offering plagiarism checking, paraphrasing, summarization, and citation generation. It ensures content originality and supports seamless integration via a browser extension for professionals, students, and marketers.
Freemium
- $19.99/mo
BookEdit is an innovative book editing solution that speeds up the modification process with advanced proofreading, paraphrasing, translation, and expansion features.
Paid
The Online Sentence Changer Rewriter is an AI tool for rephrasing and restructuring sentences. It offers tone adjustment, spell check, and punctuation correction, improving clarity and engagement for various writing contexts like academic, business, and marketing.
Free trial
RewriterâŻPROâŻAI transforms AIâgenerated text into natural, detectorâproof content with adjustable fluency levels, tone options, and multilingual support. It includes grammar refinement, plagiarism checks, bulk upload, and output download for academic, marketing, and professional use.
Free
WordfixerBot rewrites input text while preserving meaning, offering tone options from casual to formal. It returns a readyâforâcopy version, helping writers, marketers, students, and editors create clear, plagiarismâfree content.
Freemium
Linguix is a writing tool that offers free grammar check, analyzes team performance over-time, can be accessed through various platforms, and has a clean and modern UI.
Freemium
- $99
PerfectEssayWriter.ai creates structured, plagiarismâfree essays for highâschool to professional users. Set word count, essay type, academic level, tone, and citation style. Supports 27+ languages, realâtime research prompts, autoâcitation, live editing, and undetectable output.
Subscription
An AI platform that rewrites text in eight stylesâStandard, Fluency, Humanizer, Simplify, Creative, Academic, Shorten, Expandâwhile supporting custom modes, tone settings, synonym selection, audioâtoâtext, OCR, and a research panel. Available via browser extensions, mobile apps.
Free
Originality.ai evaluates text for AI generation, plagiarism, factual accuracy, readability, grammar, and SEO. The Chrome extension and web app enable onâpage checks, bulk scanning, PDF uploads, and API integration for writers and editors.
Free trial
- $12.95/mo
AI Humanizer refines text by restructuring sentences to improve flow and reduce mechanical patterns while preserving meaning. It offers adjustable rewrite modes, selective paragraph editing, keyword protection, and builtâin AI detection and plagiarism checks.
Free trial
- $8/mo
FCK.School Free Tools offers web based writing utilities â grammar and punctuation checkers, summarizer, paraphrase and rewrite tools â plus academic content generators (outlines, thesis statements, titles, paragraphs, conclusions) to support drafting, editing, and idea development.
Freemium