--- description: Unofficial Capacitor plugin for the Google ML Kit GenAI Proofreading SDK to fix grammar and spelling in text with Gemini Nano on Android. title: Capacitor ML Kit GenAI Proofreading Plugin - Capawesome image: https://capawesome.io/docs/assets/images/social/sdks/capacitor/mlkit/genai-proofreading.png --- [Skip to content ](#capacitor-ml-kit-genai-proofreading-plugin) [πŸ” Introducing the **Capacitor Vault** plugin β€” store secrets behind biometrics or a device passcode. ](/blog/announcing-the-capacitor-vault-plugin/) * [ SDKs ](/docs/sdks/) * [ Formbricks ](/docs/sdks/capacitor/formbricks/) * [ Geocoder ](/docs/sdks/capacitor/geocoder/) * [ Google Sign-In ](/docs/sdks/capacitor/google-sign-in/) * [ Grafana Faro ](/docs/sdks/capacitor/grafana-faro/) * [ Gyroscope ](/docs/sdks/capacitor/gyroscope/) * [ Haptics ](/docs/sdks/capacitor/haptics/) * [ Home Indicator ](/docs/sdks/capacitor/home-indicator/) * [ In-App Browser ](/docs/sdks/capacitor/in-app-browser/) * [ Install 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Questions ](https://docs.github.com/en/discussions/collaborating-with-your-community-using-discussions/participating-in-a-discussion#creating-a-discussion) * [ Blog ](/blog/) * Categories * [ Usage ](#usage) * [ API ](#api) * [ Enums ](#enums) * [ FAQ ](#faq) * [ Related Plugins ](#related-plugins) * [ Terms & Privacy ](#terms-privacy) * [ Newsletter ](#newsletter) * [ Changelog ](#changelog) * [ License ](#license) # Capacitor ML Kit GenAI Proofreading Plugin[ΒΆ](#capacitor-ml-kit-genai-proofreading-plugin "Permanent link") Unofficial Capacitor plugin for [ML Kit GenAI Proofreading](https://developers.google.com/ml-kit/genai/proofreading).[1](#fn:1) > \[!WARNING\] The ML Kit GenAI APIs are currently in **beta**. The API surface and behavior may change in future releases. [ ![Deliver Live Updates to your Capacitor app with Capawesome Cloud](../../../../assets/external/cloud.capawesome.io/assets/banners/cloud-build-and-deploy-capacitor-apps.69628c3f.png) ](https://cloud.capawesome.io/) ## Use Cases[ΒΆ](#use-cases "Permanent link") The GenAI Proofreading plugin is typically used to refine grammar and fix spelling in short content on-device using Gemini Nano, for example: * **Message polishing**: Correct typos and grammar in chat or email drafts before sending. * **Form input cleanup**: Proofread user-generated text such as reviews or comments. * **Voice-to-text refinement**: Clean up text produced by voice dictation. ## Requirements[ΒΆ](#requirements "Permanent link") This plugin uses [Gemini Nano](https://developers.google.com/ml-kit/genai), which runs entirely on-device. It is only available on Android and has the following device requirements: * The device must support Gemini Nano (see [supported devices](https://developers.google.com/ml-kit/genai#supported%5Fdevices)). * The device must run Android API level 26 or higher. * The device must not have an unlocked bootloader. Use the `checkFeatureStatus(...)` method to check whether the feature is available on the device. ## Compatibility[ΒΆ](#compatibility "Permanent link") | Plugin Version | Capacitor Version | Status | | -------------- | ----------------- | -------------- | | 8.x.x | \>=8.x.x | Active support | ## Installation[ΒΆ](#installation "Permanent link") You can use our **AI-Assisted Setup** to install the plugin. Add the [Capawesome Skills](https://github.com/capawesome-team/skills) to your AI tool using the following command: `[](#%5F%5Fcodelineno-0-1)npx skills add capawesome-team/skills --skill capacitor-plugins ` Then use the following prompt: `` [](#%5F%5Fcodelineno-1-1)Use the `capacitor-plugins` skill from `capawesome-team/skills` to install the `@capacitor-mlkit/genai-proofreading` plugin in my project. `` If you prefer **Manual Setup**, install the plugin by running the following commands and follow the platform-specific instructions below: `[](#%5F%5Fcodelineno-2-1)npm install @capacitor-mlkit/genai-proofreading [](#%5F%5Fcodelineno-2-2)npx cap sync ` ### Android[ΒΆ](#android "Permanent link") #### API level[ΒΆ](#api-level "Permanent link") This plugin requires a minimum API level of 26\. Make sure to set the `minSdkVersion` in your `variables.gradle` file to at least `26`. #### Variables[ΒΆ](#variables "Permanent link") This plugin will use the following project variables (defined in your app’s `variables.gradle` file): * `$mlkitGenaiProofreadingVersion` version of `com.google.mlkit:genai-proofreading` (default: `1.0.0-beta1`) ## Usage[ΒΆ](#usage "Permanent link") The following example shows how to check the feature status, download the feature and proofread a text. ### Check the feature status[ΒΆ](#check-the-feature-status "Permanent link") Before using the proofreading feature, check whether it is available on the device. The feature availability depends on the configured input type and language: `[](#%5F%5Fcodelineno-3-1)import { [](#%5F%5Fcodelineno-3-2) FeatureStatus, [](#%5F%5Fcodelineno-3-3) GenAiProofreading, [](#%5F%5Fcodelineno-3-4) InputType, [](#%5F%5Fcodelineno-3-5) Language, [](#%5F%5Fcodelineno-3-6)} from '@capacitor-mlkit/genai-proofreading'; [](#%5F%5Fcodelineno-3-7) [](#%5F%5Fcodelineno-3-8)const checkFeatureStatus = async () => { [](#%5F%5Fcodelineno-3-9) const { featureStatus } = await GenAiProofreading.checkFeatureStatus({ [](#%5F%5Fcodelineno-3-10) inputType: InputType.Keyboard, [](#%5F%5Fcodelineno-3-11) language: Language.English, [](#%5F%5Fcodelineno-3-12) }); [](#%5F%5Fcodelineno-3-13) return featureStatus === FeatureStatus.Available; [](#%5F%5Fcodelineno-3-14)}; ` ### Download the feature[ΒΆ](#download-the-feature "Permanent link") If the feature status is `DOWNLOADABLE`, download the feature before using it. Add a listener for the `downloadProgress` event to get notified about the download progress: `[](#%5F%5Fcodelineno-4-1)import { GenAiProofreading, InputType, Language } from '@capacitor-mlkit/genai-proofreading'; [](#%5F%5Fcodelineno-4-2) [](#%5F%5Fcodelineno-4-3)const downloadFeature = async () => { [](#%5F%5Fcodelineno-4-4) await GenAiProofreading.addListener('downloadProgress', event => { [](#%5F%5Fcodelineno-4-5) console.log('Total bytes downloaded:', event.totalBytesDownloaded); [](#%5F%5Fcodelineno-4-6) }); [](#%5F%5Fcodelineno-4-7) await GenAiProofreading.downloadFeature({ [](#%5F%5Fcodelineno-4-8) inputType: InputType.Keyboard, [](#%5F%5Fcodelineno-4-9) language: Language.English, [](#%5F%5Fcodelineno-4-10) }); [](#%5F%5Fcodelineno-4-11)}; ` ### Proofread a text[ΒΆ](#proofread-a-text "Permanent link") Pass the text to `proofread(...)` to generate corrected suggestions. Add a listener for the `inferenceProgress` event to receive partial results as they are generated: `[](#%5F%5Fcodelineno-5-1)import { GenAiProofreading, InputType, Language } from '@capacitor-mlkit/genai-proofreading'; [](#%5F%5Fcodelineno-5-2) [](#%5F%5Fcodelineno-5-3)const proofread = async () => { [](#%5F%5Fcodelineno-5-4) await GenAiProofreading.addListener('inferenceProgress', event => { [](#%5F%5Fcodelineno-5-5) console.log('Partial result:', event.text); [](#%5F%5Fcodelineno-5-6) }); [](#%5F%5Fcodelineno-5-7) const { results } = await GenAiProofreading.proofread({ [](#%5F%5Fcodelineno-5-8) text: 'Capacitor is an open source natvie runtime for buildng Web Native apps.', [](#%5F%5Fcodelineno-5-9) inputType: InputType.Keyboard, [](#%5F%5Fcodelineno-5-10) language: Language.English, [](#%5F%5Fcodelineno-5-11) }); [](#%5F%5Fcodelineno-5-12) return results; [](#%5F%5Fcodelineno-5-13)}; ` ## API[ΒΆ](#api "Permanent link") * [checkFeatureStatus(...)](#checkfeaturestatus) * [downloadFeature(...)](#downloadfeature) * [proofread(...)](#proofread) * [addListener('downloadProgress', ...)](#addlistenerdownloadprogress-) * [addListener('inferenceProgress', ...)](#addlistenerinferenceprogress-) * [removeAllListeners()](#removealllisteners) * [Interfaces](#interfaces) * [Enums](#enums) ### checkFeatureStatus(...)[ΒΆ](#checkfeaturestatus "Permanent link") `[](#%5F%5Fcodelineno-6-1)checkFeatureStatus(options?: FeatureOptions | undefined) => Promise ` Check the current availability status of the proofreading feature. If the status is `DOWNLOADABLE`, you can download the feature using `downloadFeature(...)`. Only available on Android. | Param | Type | | ----------- | --------------------------------- | | **options** | [FeatureOptions](#featureoptions) | **Returns:** `Promise<[CheckFeatureStatusResult](#checkfeaturestatusresult)>` **Since:** 8.2.0 --- ### downloadFeature(...)[ΒΆ](#downloadfeature "Permanent link") `[](#%5F%5Fcodelineno-7-1)downloadFeature(options?: FeatureOptions | undefined) => Promise ` Download the proofreading feature. The `downloadProgress` event listener will notify you about the download progress. The returned promise resolves when the download is complete or the feature is already available. Only available on Android. | Param | Type | | ----------- | --------------------------------- | | **options** | [FeatureOptions](#featureoptions) | **Since:** 8.2.0 --- ### proofread(...)[ΒΆ](#proofread "Permanent link") `[](#%5F%5Fcodelineno-8-1)proofread(options: ProofreadOptions) => Promise ` Proofread the given text. The `inferenceProgress` event listener will notify you about partial results as they are generated. The returned promise resolves with the full result. Only available on Android. | Param | Type | | ----------- | ------------------------------------- | | **options** | [ProofreadOptions](#proofreadoptions) | **Returns:** `Promise<[ProofreadResult](#proofreadresult)>` **Since:** 8.2.0 --- ### addListener('downloadProgress', ...)[ΒΆ](#addlistenerdownloadprogress "Permanent link") `[](#%5F%5Fcodelineno-9-1)addListener(eventName: 'downloadProgress', listenerFunc: (event: DownloadProgressEvent) => void) => Promise ` Called while the proofreading feature is being downloaded. Only available on Android. | Param | Type | | ---------------- | ---------------------------------------------------------------- | | **eventName** | 'downloadProgress' | | **listenerFunc** | (event: [DownloadProgressEvent](#downloadprogressevent)) => void | **Returns:** `Promise<[PluginListenerHandle](#pluginlistenerhandle)>` **Since:** 8.2.0 --- ### addListener('inferenceProgress', ...)[ΒΆ](#addlistenerinferenceprogress "Permanent link") `[](#%5F%5Fcodelineno-10-1)addListener(eventName: 'inferenceProgress', listenerFunc: (event: InferenceProgressEvent) => void) => Promise ` Called when a new partial result is available during inference. Only available on Android. | Param | Type | | ---------------- | ------------------------------------------------------------------ | | **eventName** | 'inferenceProgress' | | **listenerFunc** | (event: [InferenceProgressEvent](#inferenceprogressevent)) => void | **Returns:** `Promise<[PluginListenerHandle](#pluginlistenerhandle)>` **Since:** 8.2.0 --- ### removeAllListeners()[ΒΆ](#removealllisteners "Permanent link") `[](#%5F%5Fcodelineno-11-1)removeAllListeners() => Promise ` Remove all listeners for this plugin. **Since:** 8.2.0 --- ### Interfaces[ΒΆ](#interfaces "Permanent link") #### CheckFeatureStatusResult[ΒΆ](#checkfeaturestatusresult "Permanent link") | Prop | Type | Description | Since | | ----------------- | ------------------------------- | ------------------------------------------------------------ | ----- | | **featureStatus** | [FeatureStatus](#featurestatus) | The current availability status of the proofreading feature. | 8.2.0 | #### FeatureOptions[ΒΆ](#featureoptions "Permanent link") The feature availability depends on the configured input type and language. Therefore, `checkFeatureStatus(...)` and `downloadFeature(...)` take the same base options as `proofread(...)`. | Prop | Type | Description | Default | Since | | ------------- | ----------------------- | ------------------------------- | ------------------ | ----- | | **inputType** | [InputType](#inputtype) | The type of the input text. | InputType.Keyboard | 8.2.0 | | **language** | [Language](#language) | The language of the input text. | Language.English | 8.2.0 | #### ProofreadResult[ΒΆ](#proofreadresult "Permanent link") | Prop | Type | Description | Since | | ----------- | ---------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ----- | | **results** | string\[\] | The proofread suggestions for the input text. More than one result may be returned. If multiple suggestions are returned, they are sorted in descending order of confidence. | 8.2.0 | #### ProofreadOptions[ΒΆ](#proofreadoptions "Permanent link") | Prop | Type | Description | Since | | -------- | ------ | ---------------------- | ----- | | **text** | string | The text to proofread. | 8.2.0 | #### PluginListenerHandle[ΒΆ](#pluginlistenerhandle "Permanent link") | Prop | Type | | ---------- | ------------------- | | **remove** | () => Promise | #### DownloadProgressEvent[ΒΆ](#downloadprogressevent "Permanent link") | Prop | Type | Description | Since | | ------------------------ | ------ | -------------------------------------------- | ----- | | **totalBytesDownloaded** | number | The total number of bytes downloaded so far. | 8.2.0 | #### InferenceProgressEvent[ΒΆ](#inferenceprogressevent "Permanent link") | Prop | Type | Description | Since | | -------- | ------ | ----------------------------------- | ----- | | **text** | string | The new text of the partial result. | 8.2.0 | ### Enums[ΒΆ](#enums "Permanent link") #### FeatureStatus[ΒΆ](#featurestatus "Permanent link") | Members | Value | Description | Since | | ---------------- | -------------- | --------------------------------------------------------- | ----- | | **Available** | 'AVAILABLE' | The feature is available to use. | 8.2.0 | | **Downloadable** | 'DOWNLOADABLE' | The feature can be downloaded using downloadFeature(...). | 8.2.0 | | **Downloading** | 'DOWNLOADING' | The feature is currently being downloaded. | 8.2.0 | | **Unavailable** | 'UNAVAILABLE' | The feature is not available on this device. | 8.2.0 | #### InputType[ΒΆ](#inputtype "Permanent link") | Members | Value | Description | Since | | ------------ | ---------- | -------------------------------------------------------- | ----- | | **Keyboard** | 'KEYBOARD' | The input text was typed on a keyboard. | 8.2.0 | | **Voice** | 'VOICE' | The input text was produced by converting voice to text. | 8.2.0 | #### Language[ΒΆ](#language "Permanent link") | Members | Value | Since | | ------------ | ---------- | ----- | | **English** | 'ENGLISH' | 8.2.0 | | **French** | 'FRENCH' | 8.2.0 | | **German** | 'GERMAN' | 8.2.0 | | **Italian** | 'ITALIAN' | 8.2.0 | | **Japanese** | 'JAPANESE' | 8.2.0 | | **Korean** | 'KOREAN' | 8.2.0 | | **Spanish** | 'SPANISH' | 8.2.0 | ## FAQ[ΒΆ](#faq "Permanent link") ### What are the requirements to use this plugin?[ΒΆ](#what-are-the-requirements-to-use-this-plugin "Permanent link") The proofreading is performed on-device by Gemini Nano. This requires a device that supports Gemini Nano, Android API level 26 or higher and a locked bootloader (see [Requirements](#requirements)). Use the `checkFeatureStatus(...)` method to check whether the feature is available on the device. ### Why is this plugin only available on Android?[ΒΆ](#why-is-this-plugin-only-available-on-android "Permanent link") The ML Kit GenAI APIs are based on Gemini Nano and AICore, which are currently only available on Android. On iOS and Web, all methods reject with an appropriate error. ### Which languages are supported?[ΒΆ](#which-languages-are-supported "Permanent link") Proofreading is supported for English, French, German, Italian, Japanese, Korean and Spanish. Use the `Language` enum to configure the language of the input text. ### How do I get the result as a stream?[ΒΆ](#how-do-i-get-the-result-as-a-stream "Permanent link") Add a listener for the `inferenceProgress` event before calling `proofread(...)`. The listener is called with each partial result as it is generated. The promise returned by `proofread(...)` resolves with the full result. ### Can I use this plugin with Ionic, React, Vue or Angular?[ΒΆ](#can-i-use-this-plugin-with-ionic-react-vue-or-angular "Permanent link") Yes, the plugin is framework-agnostic. It works in any Capacitor app regardless of the web framework, including Ionic with Angular, React, or Vue, as well as plain JavaScript projects. ## Related Plugins[ΒΆ](#related-plugins "Permanent link") * [GenAI Summarization](https://capawesome.io/docs/sdks/capacitor/mlkit/genai-summarization/): Unofficial Capacitor plugin for ML Kit GenAI Summarization. * [Translation](https://capawesome.io/docs/sdks/capacitor/mlkit/translation/): Unofficial Capacitor plugin for ML Kit Translation. ## Terms & Privacy[ΒΆ](#terms-privacy "Permanent link") This plugin uses the [Google ML Kit](https://developers.google.com/ml-kit): * [Terms & Privacy](https://developers.google.com/ml-kit/terms) * [Android Data Disclosure](https://developers.google.com/ml-kit/android-data-disclosure) * [iOS Data Disclosure](https://developers.google.com/ml-kit/ios-data-disclosure) ## Newsletter[ΒΆ](#newsletter "Permanent link") Stay up to date with the latest news and updates about the Capawesome, Capacitor, and Ionic ecosystem by subscribing to our [Capawesome Newsletter](https://cloud.capawesome.io/newsletter/). ## Changelog[ΒΆ](#changelog "Permanent link") See [CHANGELOG.md](https://github.com/capawesome-team/capacitor-mlkit/blob/main/packages/genai-proofreading/CHANGELOG.md). ## License[ΒΆ](#license "Permanent link") See [LICENSE](https://github.com/capawesome-team/capacitor-mlkit/blob/main/packages/genai-proofreading/LICENSE). --- 1. This project is not affiliated with, endorsed by, sponsored by, or approved by Google LLC or any of their affiliates or subsidiaries. [↩](#fnref:1 "Jump back to footnote 1 in the text") July 10, 2026 Back to top ```json {"@context": "https://schema.org", "@graph": [{"@type": "TechArticle", "@id": "https://capawesome.io/docs/sdks/capacitor/mlkit/genai-proofreading/#article", "headline": "Capacitor ML Kit GenAI Proofreading Plugin", "name": "Capacitor ML Kit GenAI Proofreading Plugin", "description": "Unofficial Capacitor plugin for the Google ML Kit GenAI Proofreading SDK to fix grammar and spelling in text with Gemini Nano on Android.", "inLanguage": "en", "url": "https://capawesome.io/docs/sdks/capacitor/mlkit/genai-proofreading/", "mainEntityOfPage": "https://capawesome.io/docs/sdks/capacitor/mlkit/genai-proofreading/", "author": {"@type": "Organization", "name": "Capawesome", "url": "https://capawesome.io", "logo": {"@type": "ImageObject", "url": "https://capawesome.io/assets/images/logo.svg"}}, "publisher": {"@type": "Organization", "name": "Capawesome", "url": "https://capawesome.io", "logo": {"@type": "ImageObject", "url": "https://capawesome.io/assets/images/logo.svg"}}, "about": {"@id": "https://capawesome.io/docs/sdks/capacitor/mlkit/genai-proofreading/#software"}}, {"@type": "SoftwareSourceCode", "@id": "https://capawesome.io/docs/sdks/capacitor/mlkit/genai-proofreading/#software", "name": "Capacitor ML Kit GenAI Proofreading Plugin", "description": "Unofficial Capacitor plugin for the Google ML Kit GenAI Proofreading SDK to fix grammar and spelling in text with Gemini Nano on Android.", "url": "https://capawesome.io/docs/sdks/capacitor/mlkit/genai-proofreading/", "programmingLanguage": "TypeScript", "runtimePlatform": "Capacitor", "codeRepository": "https://github.com/capawesome-team", "author": {"@type": "Organization", "name": "Capawesome", "url": "https://capawesome.io", "logo": {"@type": "ImageObject", "url": "https://capawesome.io/assets/images/logo.svg"}}, "publisher": {"@type": "Organization", "name": "Capawesome", "url": "https://capawesome.io", "logo": {"@type": "ImageObject", "url": "https://capawesome.io/assets/images/logo.svg"}}}]} {"@context": "https://schema.org", "@type": "FAQPage", "mainEntity": [{"@type": "Question", "name": "What are the requirements to use this plugin?", "acceptedAnswer": {"@type": "Answer", "text": "The proofreading is performed on-device by Gemini Nano. This requires a device that supports Gemini Nano, Android API level 26 or higher and a locked bootloader (see Requirements). Use the checkFeatureStatus(...) method to check whether the feature is available on the device."}}, {"@type": "Question", "name": "Why is this plugin only available on Android?", "acceptedAnswer": {"@type": "Answer", "text": "The ML Kit GenAI APIs are based on Gemini Nano and AICore, which are currently only available on Android. On iOS and Web, all methods reject with an appropriate error."}}, {"@type": "Question", "name": "Which languages are supported?", "acceptedAnswer": {"@type": "Answer", "text": "Proofreading is supported for English, French, German, Italian, Japanese, Korean and Spanish. Use the Language enum to configure the language of the input text."}}, {"@type": "Question", "name": "How do I get the result as a stream?", "acceptedAnswer": {"@type": "Answer", "text": "Add a listener for the inferenceProgress event before calling proofread(...). The listener is called with each partial result as it is generated. The promise returned by proofread(...) resolves with the full result."}}, {"@type": "Question", "name": "Can I use this plugin with Ionic, React, Vue or Angular?", "acceptedAnswer": {"@type": "Answer", "text": "Yes, the plugin is framework-agnostic. It works in any Capacitor app regardless of the web framework, including Ionic with Angular, React, or Vue, as well as plain JavaScript projects."}}], "url": "https://capawesome.io/docs/sdks/capacitor/mlkit/genai-proofreading/"} ```