Solid hCaptcha Component Library

This is a port of @hcaptcha/react-hcaptcha for Solid.


hCaptcha is a drop-replacement for reCAPTCHA that protects user privacy, rewards websites, and helps companies get their data labeled.

Sign up at hCaptcha to get your sitekey today. You need a sitekey to use this library.


You can install this library via your favorite package manager.

npm install solid-hcaptcha --save

# Yarn
yarn add solid-hcaptcha

# PNPm
pnpm add solid-hcaptcha


You can see multiple use cases on the example website.

Basic Usage

import type { HCaptchaExecuteResponse } from "solid-hcaptcha";
import HCaptcha from "solid-hcaptcha";

const App: Component = () => {
  const handleVerify = (token: string, eKey: string) => {
    console.log(token, eKey);

  return (
      onVerify={token => console.log(token)}

export default App;

Programmatic Usage

import type {
} from "solid-hcaptcha";

import HCaptcha from "solid-hcaptcha";
import { createSignal } from "solid-js";

const App: Component = () => {
  const [captchaResponse, setCaptchaResponse] = createSignal<HCaptchaExecuteResponse | null>(null);
  let hcaptcha: HCaptchaFunctions | undefined;

  const submitCaptcha = async () => {
    if (!hcaptcha) return; // Check if the widget has loaded.

    // Execute the captcha and get the response.
    const response = await hcaptcha.execute();

    console.log("stored response", response);

  return (
        onLoad={hcaptcha_instance => (hcaptcha = hcaptcha_instance)}

      <button onClick={submitCaptcha}>
        Open captcha

export default App;



Name Values/Type Required Default Description
sitekey string Yes - This is your sitekey, this allows you to load captcha. If you need a sitekey, please visit hCaptcha, and sign up to get your sitekey.
size `”normal” “compact” “invisible”` No
theme `”light” “dark”` No "light"
tabindex number No 0 Set the tabindex of the widget and popup. When appropriate, this can make navigation of your site more intuitive.
id string No - Set an ID to the hCaptcha widget. Make sure each hCaptcha component generated on a single page has its own unique ID when using this prop.
config HCaptchaConfig No {} Advanced configuration for the hCaptcha component.

Advanced Configuration

All the parameters are optional.

Name Values/Type Default Description
recaptchacompat boolean true Disable drop-in replacement for reCAPTCHA with false to prevent hCaptcha from injecting into window.grecaptcha.
hl string (ISO 639-2 code) auto hCaptcha auto-detects language via the user’s browser. This overrides that to set a default UI language. See language codes.
apihost string - See enterprise docs.
assethost string - See enterprise docs.
endpoint string - See enterprise docs.
host string - See enterprise docs.
imghost string - See enterprise docs.
reportapi string - See enterprise docs.
sentry string - See enterprise docs.
custom boolean - See enterprise docs.

Events Props

Event Params Description
onError error: HCaptchaError When an error occurs. Component will reset immediately after an error.
onVerify token: string, eKey: string When challenge is completed. The response token and an eKey (session ID) are passed along.
onExpire - When the current token expires.
onLoad hcaptcha: HCaptchaFunctions When the hCaptcha API loads. The hCaptcha instance is passed along. You can store them to use, later, its methods.
onOpen - When the user display of a challenge starts.
onClose - When the user dismisses a challenge.
onChallengeExpired - When the user display of a challenge times out with no answer.

Methods from hCaptcha instance (type HCaptchaFunctions)

Method Description
execute() Programmatically trigger a challenge request. Additionally, this method is run asynchronously and returns a promise with the token and eKey when the challenge is completed.
executeSync() Programmatically trigger a challenge request but doesn’t return the captcha response.
getRespKey() Get the current challenge reference ID.
getResponse() Get the current challenge response token from completed challenge.
renderCaptcha(onReady?: () => unknown) Manually render the hCaptcha widget.
removeCaptcha(callback?: () => unknown) Manually remove the hCaptcha widget from the DOM.
resetCaptcha() Reset the current challenge.
setData() See enterprise docs.

NOTE: Make sure to reset the hCaptcha state when you submit your form by calling the method .resetCaptcha on your hCaptcha Solid Component ! Passcodes are one-time use, so if your user submits the same passcode twice then it will be rejected by the server the second time.

Please note that “invisible” simply means that no hCaptcha button will be rendered. Whether a challenge shows up will depend on the sitekey difficulty level. Note to hCaptcha Enterprise (BotStop) users: select “Passive” or “99.9% Passive” modes to get this No-CAPTCHA behavior.

Development (for /package)

git clone

I use pnpm as the package manager, so run pnpm install to install the dependencies.


  • pnpm build: Lints and builds to the dist folder.
  • pnpm lint: Checks if there’s any TypeScript error.
  • pnpm release: Runs release-it to release new versions.

Example Website

You can see how to contribute to the example website in the example folder.


View Github