> For the complete documentation index, see [llms.txt](https://docs.wproofreader.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.wproofreader.com/v6.12.0/faq.md).

# FAQ

- [Technical](https://docs.wproofreader.com/v6.12.0/faq/technical.md)
- [Compatibility and support](https://docs.wproofreader.com/v6.12.0/faq/technical/compatibility-and-support.md)
- [Can I run WebSpellChecker software on Azure App Service?](https://docs.wproofreader.com/v6.12.0/faq/technical/compatibility-and-support/can-i-run-webspellchecker-software-on-azure-app-service.md)
- [Does WebSpellChecker provide support for CKEditor v5?](https://docs.wproofreader.com/v6.12.0/faq/technical/compatibility-and-support/does-webspellchecker-provide-support-for-ckeditor-v5.md)
- [WProofreader doesn't work in Zen browser](https://docs.wproofreader.com/v6.12.0/faq/technical/compatibility-and-support/wproofreader-doesnt-work-in-zen-browser.md)
- [Can I use your product through the browser or how can I install it?](https://docs.wproofreader.com/v6.12.0/faq/technical/compatibility-and-support/can-i-use-your-product-through-the-browser-or-how-can-i-install-it.md)
- [SCAYT plugin for CKEditor 4](https://docs.wproofreader.com/v6.12.0/faq/technical/scayt-plugin-for-ckeditor-4.md)
- [What is the difference between SCAYT plugin for CKEditor 4 and WProofreader?](https://docs.wproofreader.com/v6.12.0/faq/technical/scayt-plugin-for-ckeditor-4/what-is-the-difference-between-scayt-plugin-for-ckeditor-4-and-wproofreader.md)
- [How to disable the WSC plugin in CKEditor 4?](https://docs.wproofreader.com/v6.12.0/faq/technical/scayt-plugin-for-ckeditor-4/how-to-disable-the-wsc-plugin-in-ckeditor-4.md)
- [How to remove the SCAYT plugin in CKEditor 4?](https://docs.wproofreader.com/v6.12.0/faq/technical/scayt-plugin-for-ckeditor-4/how-to-remove-the-scayt-plugin-in-ckeditor-4.md)
- [Caching](https://docs.wproofreader.com/v6.12.0/faq/technical/caching.md)
- [Can we control the cache limit? Is it configurable?](https://docs.wproofreader.com/v6.12.0/faq/technical/caching/can-we-control-the-cache-limit-is-it-configurable.md)
- [Can we turn off/on the cache?](https://docs.wproofreader.com/v6.12.0/faq/technical/caching/can-we-turn-off-on-the-cache.md)
- [How do I enable caching different from the default 10 MB of cache on AppServer for 10000 suggestions](https://docs.wproofreader.com/v6.12.0/faq/technical/caching/how-do-i-enable-caching-different-from-the-default-10-mb-of-cache-on-appserver-for-10000-suggestions.md)
- [Is caching applicable for both Spelling check and grammar check?](https://docs.wproofreader.com/v6.12.0/faq/technical/caching/is-caching-applicable-for-both-spelling-check-and-grammar-check.md)
- [Is the cache limit size in MB specified per locale or is it an overall amount?](https://docs.wproofreader.com/v6.12.0/faq/technical/caching/is-the-cache-limit-size-in-mb-specified-per-locale-or-is-it-an-overall-amount.md)
- [Which caching strategy do you use? Are LRU or LFU strategies supported?](https://docs.wproofreader.com/v6.12.0/faq/technical/caching/which-caching-strategy-do-you-use-are-lru-or-lfu-strategies-supported.md)
- [WProofreader](https://docs.wproofreader.com/v6.12.0/faq/technical/wproofreader.md)
- [How would keyboard users be able to access the spell check suggestions?](https://docs.wproofreader.com/v6.12.0/faq/technical/wproofreader/how-would-keyboard-users-be-able-to-access-the-spell-check-suggestions.md)
- [How to disable Cloud WProofreader plugin for CKEditor 5 while unit tests?](https://docs.wproofreader.com/v6.12.0/faq/technical/wproofreader/how-to-disable-cloud-wproofreader-plugin-for-ckeditor-5-while-unit-tests.md)
- [How WProofreader works if the backend is unavailable?](https://docs.wproofreader.com/v6.12.0/faq/technical/wproofreader/how-wproofreader-works-if-the-backend-is-unavailable.md)
- [Is there any way to change the hover behavior to right click in WProofreader?](https://docs.wproofreader.com/v6.12.0/faq/technical/wproofreader/is-there-any-way-to-change-the-hover-behavior-to-right-click-in-wproofreader.md)
- [What is the mechanism of errors highlighting by WProofreader and SCAYT plugin for CKEditor 4?](https://docs.wproofreader.com/v6.12.0/faq/technical/wproofreader/what-is-the-mechanism-of-errors-highlighting-by-wproofreader-and-scayt-plugin-for-ckeditor-4.md)
- [API](https://docs.wproofreader.com/v6.12.0/faq/technical/api.md)
- [What is minimum guaranteed SLA for Cloud API?](https://docs.wproofreader.com/v6.12.0/faq/technical/api/what-is-minimum-guaranteed-sla-for-cloud-api.md)
- [What is the max limit of an API request?](https://docs.wproofreader.com/v6.12.0/faq/technical/api/what-is-the-max-limit-of-an-api-request.md)
- [What’s the average response time of a Cloud API request?](https://docs.wproofreader.com/v6.12.0/faq/technical/api/whats-the-average-response-time-of-a-cloud-api-request.md)
- [Languages](https://docs.wproofreader.com/v6.12.0/faq/technical/languages.md)
- [AI-based language doesn't provide suggestions for non-existent words](https://docs.wproofreader.com/v6.12.0/faq/technical/languages/ai-based-language-doesnt-provide-suggestions-for-non-existent-words.md)
- [Why WProofreader auto detect language doesn't work for small piece of texts?](https://docs.wproofreader.com/v6.12.0/faq/technical/languages/why-wproofreader-auto-detect-language-doesnt-work-for-small-piece-of-texts.md)
- [Engines prioritization while using AI-check kit while proofreading](https://docs.wproofreader.com/v6.12.0/faq/technical/languages/engines-prioritization-while-using-ai-check-kit-while-proofreading.md)
- [Which spell and grammar check engines are in use?](https://docs.wproofreader.com/v6.12.0/faq/technical/languages/which-spell-and-grammar-check-engines-are-in-use.md)
- [How to change the list of languages?](https://docs.wproofreader.com/v6.12.0/faq/technical/languages/how-to-change-the-list-of-languages.md)
- [Security](https://docs.wproofreader.com/v6.12.0/faq/technical/security.md)
- [Are you OWASP 10 compliant?](https://docs.wproofreader.com/v6.12.0/faq/technical/security/are-you-owasp-10-compliant.md)
- [Does CVE-2021-44228 (Log4j 2 vulnerability) affect WebSpellChecker products?](https://docs.wproofreader.com/v6.12.0/faq/technical/security/does-cve-2021-44228-log4j-2-vulnerability-affect-webspellchecker-products.md)
- [Do you implement any data encryption?](https://docs.wproofreader.com/v6.12.0/faq/technical/security/do-you-implement-any-data-encryption.md)
- [WebSpellChecker security advisory WSC-SA-2026-001](https://docs.wproofreader.com/v6.12.0/faq/technical/security/webspellchecker-security-advisory-wsc-sa-2026-001.md): Security advisory WSC-SA-2026-001 covering CVE-2026-40682, CVE-2026-42027, and CVE-2026-42440 in Apache OpenNLP bundled with WProofreader. Status: not exploitable, no customer action required.
- [General](https://docs.wproofreader.com/v6.12.0/faq/general.md)
- [Compliance](https://docs.wproofreader.com/v6.12.0/faq/general/compliance.md)
- [Evaluations](https://docs.wproofreader.com/v6.12.0/faq/general/evaluations.md)
- [Licensing](https://docs.wproofreader.com/v6.12.0/faq/general/licensing.md)
- [How is the cloud service usage calculated?](https://docs.wproofreader.com/v6.12.0/faq/general/licensing/how-is-the-cloud-service-usage-calculated.md)
- [How is the on-premise product licensed?](https://docs.wproofreader.com/v6.12.0/faq/general/licensing/how-is-the-on-premise-product-licensed.md)
- [What are the Terms of Service?](https://docs.wproofreader.com/v6.12.0/faq/general/licensing/what-are-the-terms-of-service.md)
- [What are the terms of use for the on-premise product version?](https://docs.wproofreader.com/v6.12.0/faq/general/licensing/what-are-the-terms-of-use-for-the-on-premise-product-version.md)
- [What will happen if I end up exceeding the usage limit of my subscription plan?](https://docs.wproofreader.com/v6.12.0/faq/general/licensing/what-will-happen-if-i-end-up-exceeding-the-usage-limit-of-my-subscription-plan.md)
- [Can we obtain a separate service ID for our development environment?](https://docs.wproofreader.com/v6.12.0/faq/general/licensing/can-we-obtain-a-separate-service-id-for-our-development-environment.md)
- [Support agreement](https://docs.wproofreader.com/v6.12.0/faq/general/support-agreement.md)
- [How can I renew my support agreement?](https://docs.wproofreader.com/v6.12.0/faq/general/support-agreement/how-can-i-renew-my-support-agreement.md)
- [What are the minimum hardware requirements?](https://docs.wproofreader.com/v6.12.0/faq/general/support-agreement/what-are-the-minimum-hardware-requirements.md)
- [What benefits do I get on the support agreement renewal?](https://docs.wproofreader.com/v6.12.0/faq/general/support-agreement/what-benefits-do-i-get-on-the-support-agreement-renewal.md)
- [What happens when the included support agreement ends?](https://docs.wproofreader.com/v6.12.0/faq/general/support-agreement/what-happens-when-the-included-support-agreement-ends.md)
- [When does the support agreement start?](https://docs.wproofreader.com/v6.12.0/faq/general/support-agreement/when-does-the-support-agreement-start.md)
- [How can I get the most recent version of the application?](https://docs.wproofreader.com/v6.12.0/faq/general/support-agreement/how-can-i-get-the-most-recent-version-of-the-application.md)
- [Support](https://docs.wproofreader.com/v6.12.0/faq/general/support.md)
- [Can I request a feature?](https://docs.wproofreader.com/v6.12.0/faq/general/support/can-i-request-a-feature.md)
- [What is guided installation service?](https://docs.wproofreader.com/v6.12.0/faq/general/support/what-is-guided-installation-service.md)
- [Does support offer installation services?](https://docs.wproofreader.com/v6.12.0/faq/general/support/does-support-offer-installation-services.md)
- [Do I have access to support?](https://docs.wproofreader.com/v6.12.0/faq/general/support/do-i-have-access-to-support.md)
- [Do you offer custom development services?](https://docs.wproofreader.com/v6.12.0/faq/general/support/do-you-offer-custom-development-services.md)
- [How do I contact support?](https://docs.wproofreader.com/v6.12.0/faq/general/support/how-do-i-contact-support.md)
- [How soon can I expect a response to my support request?](https://docs.wproofreader.com/v6.12.0/faq/general/support/how-soon-can-i-expect-a-response-to-my-support-request.md)
- [What are support's business hours?](https://docs.wproofreader.com/v6.12.0/faq/general/support/what-are-supports-business-hours.md)
- [How can we make sure we get notified every time there is a new version released?](https://docs.wproofreader.com/v6.12.0/faq/general/support/how-can-we-make-sure-we-get-notified-every-time-there-is-a-new-version-released.md)
- [Do you have a “what’s new” or release documentation to understand what a new version introduces?](https://docs.wproofreader.com/v6.12.0/faq/general/support/do-you-have-a-whats-new-or-release-documentation-to-understand-what-a-new-version-introduces.md)
- [When you find a security issue, how is it patched? Do we need to upgrade to benefit from the fix?](https://docs.wproofreader.com/v6.12.0/faq/general/support/when-you-find-a-security-issue-how-is-it-patched-do-we-need-to-upgrade-to-benefit-from-the-fix.md)
- [How to check the version?](https://docs.wproofreader.com/v6.12.0/faq/general/support/how-to-check-the-version.md)
- [Pricing and discounts](https://docs.wproofreader.com/v6.12.0/faq/pricing-and-discounts.md)
- [Are there any discounts for government organizations or academic institutions?](https://docs.wproofreader.com/v6.12.0/faq/pricing-and-discounts/are-there-any-discounts-for-government-organizations-or-academic-institutions.md)
- [Do you offer any discounts?](https://docs.wproofreader.com/v6.12.0/faq/pricing-and-discounts/do-you-offer-any-discounts.md)
- [How can I buy more than one year of maintenance?](https://docs.wproofreader.com/v6.12.0/faq/pricing-and-discounts/how-can-i-buy-more-than-one-year-of-maintenance.md)
- [Does WebSpellChecker offer reseller discounts?](https://docs.wproofreader.com/v6.12.0/faq/pricing-and-discounts/does-webspellchecker-offer-reseller-discounts.md)
- [How much do WebSpellChecker products cost?](https://docs.wproofreader.com/v6.12.0/faq/pricing-and-discounts/how-much-do-webspellchecker-products-cost.md)
- [Ordering](https://docs.wproofreader.com/v6.12.0/faq/ordering.md)
- [Do you accept purchase orders?](https://docs.wproofreader.com/v6.12.0/faq/ordering/do-you-accept-purchase-orders.md)
- [How can I make changes to a quote?](https://docs.wproofreader.com/v6.12.0/faq/ordering/how-can-i-make-changes-to-a-quote.md)
- [How do I request a quote/invoice?](https://docs.wproofreader.com/v6.12.0/faq/ordering/how-do-i-request-a-quote-invoice.md)
- [What solution should we choose?](https://docs.wproofreader.com/v6.12.0/faq/ordering/what-solution-should-we-choose.md)
- [Payments and refunds](https://docs.wproofreader.com/v6.12.0/faq/payments-and-refunds.md)
- [Can I get a refund after purchasing a server product license?](https://docs.wproofreader.com/v6.12.0/faq/payments-and-refunds/can-i-get-a-refund-after-purchasing-a-server-product-license.md)
- [Can I get a refund for cloud services?](https://docs.wproofreader.com/v6.12.0/faq/payments-and-refunds/can-i-get-a-refund-for-cloud-services.md)
- [Can I sign up for automatic renewals of my subscription?](https://docs.wproofreader.com/v6.12.0/faq/payments-and-refunds/can-i-sign-up-for-automatic-renewals-of-my-subscription.md)
- [Which payment methods are accepted, and what are your payment terms?](https://docs.wproofreader.com/v6.12.0/faq/payments-and-refunds/which-payment-methods-are-accepted-and-what-are-your-payment-terms.md)
- [How can I pay an outstanding invoice?](https://docs.wproofreader.com/v6.12.0/faq/payments-and-refunds/how-can-i-pay-an-outstanding-invoice.md)