Multilingual spelling & grammar checker with AI writing assistance
Demo text size is limited to 2000 characters.
WProofreader for your industry
Find out how WProofreader can help with writing and spellchecking tasks in your field. For industries that handle sensitive information, WProofreader allows your organization to maintain control over its data.
Healthcare
Use specialized medical and veterinary dictionaries with Tall Man Lettering support to check patient records, medication reports, orders, clinical notes, labels, and other healthcare content.
Education
Support writing across LMSs and assessment platforms, from student assignments and test responses to course materials and everyday academic communication.
Banking and finance
Keep sensitive text processing secure across internal applications and CMSs for banking, insurance and risk management documentation
Legal
Specialized legal dictionaries help check terminology across contracts, agreements and other legal documents, while style rules keep language consistent.
Why WProofreader?
Built for businesses and organizations that need reliable writing support backed by human expertise. Give your users real-time spelling and grammar checking with AI-powered tools for rewriting and refining text.
Multilingual text checker
WProofreader is a multilingual spelling, grammar and style checker. 80+ languages. AI-driven suggestions are available for English, German and Spanish.
Data privacy and security
Texts sent to WProofreader aren't collected. Your data is protected throughout processing with TLS-encrypted transmission and additional security measures.
Flexible deployment
Choose between cloud and on-premises deployment based on your infrastructure and data requirements. Cloud simplifies setup and updates, while on-premises gives you greater control over your infrastructure and data.
All-in-one writing support
Cover everyday text checking and more advanced writing needs in one solution. Use real-time spelling and grammar suggestions, autocorrect and autocomplete features, organization-wide and user dictionaries alongside the Style Guide Builder for your team. The AI Writing Assistant adds options for rewriting, summarizing and adjusting your text.
Flexible configuration
Customize the WProofreader JavaScript component: set the primary language and UI localization, manage settings and personalize the interface with built-in or custom themes.
Our technical team will help your business or organization integrate and configure WProofreader for your needs.
Accessibility standards
WProofreader is regularly tested for accessibility and meets the majority of WCAG 2.1 Level A and AA success criteria. Keyboard navigation helps users with different abilities access key features.
Standalone API
Use the standalone WProofreader API when you need more control over how text checking is integrated into your product or system. Build your own workflow and use WProofreader capabilities without the predefined UI.
Product updates and support
WProofreader receives regular product improvements, linguistic updates and security fixes. For technical or sales questions, our team responds within one business day.
WProofreader integration options
Integrate WProofreader with popular RTEs, CMSs and custom web applications using ready-to-use plugins, the JavaScript component or standalone API.
Don't see your editor or platform? let us know to check compatibility with your setup.
What’s inside WProofreader SDK?
Integrate pre-built JavaScript libraries into HTML elements, WYSIWYG editors, CMS or use an off-the-shelf extension to season your apps and systems with proofreading & rewording functionality. Build and go!
RTEs and HTML editable controls
The component integrates in HTML editable controls and rich text editors within web applications to scale them up with multilingual proofreading and paraphrasing functionality.
CKEditor 5 plugin
The multilingual CKEditor 5 spell and grammar check plugin. It provides both instant and in-dialog proofreading modes in a convenient UI.
TinyMCE plugin
The TinyMCE spell check plugin adopts the full functionality of the WProofreader component, with minor adjustments to the editor's appearance and features.
Standalone API
Standalone WProofreader API empowers developers to tweak, twist, extract, manipulate and further integrate proofreading capabilities into unique web systems.
WProofreader for Drupal
The CKEditor 5 Plugin Pack includes a free limited and full version of WProofreader, a grammar and spell checker.
SCAYT plugin for CKEditor 4
Out-of-the-box multilingual grammar and spell checker plugin for CKEditor 4 instantly detects and underlines writing issues in as-you-type mode.
Pricing
Choose a plan based on your text processing volume, team size and product needs. For higher usage or specific security and deployment requirements, contact sales team.
Free
For projects with small data processing needs.
up to 20,000 words processed per day
up to 20,000 words processed per day
Basic spelling, grammar, style with daily word limit
Multiple languages support
User-level custom dictionary
WProofreader branding
Public product documentation
Free
For projects with small data processing needs.
Basic spelling, grammar, style with daily word limit
Multiple languages support
User-level custom dictionary
WProofreader branding
Public product documentation
Growth
For basic proofreading needs with a limited word count.
Up to 10 million words processed
Up to 120 million words processed
Multilingual text check
Autocorrect and autocomplete suggestions
Custom dictionaries
(up to 3)
Style guide builder
(up to 1 collection)
Team access
(up to 3 members)
Text operations within AI writing assistant (daily limit)
Growth
For basic proofreading needs with a limited word count.
Multilingual text check
Autocorrect and autocomplete suggestions
Custom dictionaries
(up to 3)
Style guide builder
(up to 1 collection)
Team access
(up to 3 members)
Scale
For typical proofreading needs, covering a standard word usage.
Up to 25 million words processed
Up to 300 million words processed
Custom dictionaries
(up to 15)
Style guide builder
(up to 3 collections)
Team access
(up to 15 members)
Everything in Growth plan
Scale
For typical proofreading needs, covering a standard word usage.
Custom dictionaries
(up to 15)
Style guide builder
(up to 3 collections)
Team access
(up to 15 members)
Everything in Growth plan
Custom
For extended proofreading needs with a high word usage volume.
Up to 62.5 million words processed
Up to 750 million words processed
Custom dictionaries
(up to 100)
Style guide builder
(up to 50 collections)
Team access
(up to 50 members)
Everything in Scale plan
Priority email support
Custom
For extended proofreading needs with a high word usage volume.
Custom dictionaries
(up to 100)
Style guide builder
(up to 50 collections)
Team access
(up to 50 members)
Everything in Scale plan
Priority email support
See WProofreader in action
The best way to understand WProofreader is to experience it for yourself. Explore its key features with your own text and see how they work in practice.
Frequently asked questions
Can I try WProofreader SDK for free?
Yes. We offer a 14-days evaluation period for the cloud version and 30-day—for the on-premises version of WProofreader SDK. WProofreader browser extension is available absolutely for free, the Business version comes under the premium subscription.
What’s the difference between the cloud and standalone versions?
The cloud version is the easiest way to start. We host everything for you on AWS servers in the US East region, so you don’t need to manage any infrastructure. You simply integrate the frontend while we handle the backend.
The on-premises solution provides full control and keeps all data within your own infrastructure, making it ideal for organizations with strict security or compliance needs. This option supports various operating systems, including Windows Server and multiple Linux distributions, and is compatible with virtualization and containerization technologies. Each release undergoes extensive testing to ensure smooth deployment and optimal performance across diverse environments, including compatibility with web servers like NGINX and Apache, and proper JVM configuration.
Both options prioritize security with regular updates and thorough testing to ensure smooth operation. While the cloud uses powerful GPUs for AI tasks, the on-premises solution is optimized for efficient performance on standard CPU hardware.
What’s the difference between SDK and browser extension?
WProofreader SDK is designed for developers and teams who want to build proofreading directly into their web apps, editors, or custom workflows. It works well with popular WYSIWYG editors like CKEditor or TinyMCE, or as a standalone API. You can choose cloud hosting or deploy it on your own servers for extra control.
WProofreader browser extension is better suited for individual users or teams who need an out-of-the-box spelling and grammar check in their browsers. It works anywhere you write online: emails, CRMs, or web forms. Use it for free through our cloud or switch to the Business plan to host it on your own servers.
What happens if you exceed the limits of your usage plan?
If you go over your word limit, the service will pause until you add more capacity. Don’t worry, our team keeps an eye on your usage and will notify you in advance if you’re getting close. This way you’ll have time to upgrade or buy extra words.
We’ll help you pick the best option based on how much your team actually uses. We also offer discounts for high-volume needs, so if you expect big spikes, just let us know, and we’ll work out the best plan for you.
Which integrations does WProofreader support?
WProofreader supports popular WYSIWYG Editors, CMSs and learning management systems, including CKEditor 5, TinyMCE, Froala, Quill, Drupal, WordPress and Moodle. For custom web applications and systems, you can integrate WProofreader using the JavaScript component or standalone API.
How does WProofreader handle my data?
Texts sent to WProofreader aren't collected for further use. In the cloud version, data in transit is protected with TLS 1.3 and the service is hosted on AWS infrastructure. If your organization requires greater control over data processing, WProofreader can also be deployed on-premises, keeping processing within your own infrastructure. For more details, see our Security Center or request the security whitepaper.
Can’t find the answer you’re looking for? Please chat to our team.