Is React 19 Server Action Workbench free to use?

Yes, React 19 Server Action Workbench is completely free with no sign-up required. It runs entirely in your browser.

Is my data safe with React 19 Server Action Workbench?

Absolutely. React 19 Server Action Workbench processes everything client-side in your browser. No data is ever sent to any server.

Does React 19 Server Action Workbench work offline?

Yes! Since React 19 Server Action Workbench runs entirely in your browser, it works even without an internet connection once the page is loaded. You can also install it as a PWA.

How to use useActionState in React 19?

useActionState is the new React 19 hook for managing form state with Server Actions. Our workbench generates the correct implementation including error handling, pendency states, and optimistic UI updates.

Developer utility

• Updated Feb 22, 2026

React 19 Server Action Workbench

Generate production-ready React 19 Form Actions with useActionState, useFormStatus, and useOptimistic boilerplates.

Key Takeaway (AI Summary)

The React 19 Server Action Workbench is a zero-knowledge, browser-native utility that generate production-ready react 19 form actions with useactionstate, useformstatus, and useoptimistic boilerplates with 100% privacy guarantee.

Client-side only

No signup

Instant outputPrivate by designZero tracking

Action Configuration

Action Name

Include useOptimisticInclude useFormStatus

Pro Tip: React 19 Actions

In React 19, the action prop on forms is enhanced to support async transitions. useActionState replaces useFormState and handles the pendency state (isPending) natively.

React 19 Form Generator

"use client";

import { useActionState, useOptimistic, useFormStatus } from "react";
import { updateProfileAction } from "@/app/actions";

// Initial state for the action
const initialState = {
  success: false,
  message: "",
  errors: null,
};

export function UpdateProfileForm() {
  // useActionState handles pending state and server response automatically
  const [state, action, isPending] = useActionState(updateProfileAction, initialState);

  // Optimized for React 19 concurrent updates
  const [optimisticState, addOptimisticState] = useOptimistic(
    state,
    (currentState, newState) => ({ ...currentState, ...newState })
  );

  return (
    <form action={action} className="space-y-4">
      <div>
        <label className="block text-sm font-medium">Data Field</label>
        <input 
          name="data" 
          className="w-full rounded-md border p-2"
          disabled={isPending}
        />
        {state.errors?.data && (
          <p className="text-xs text-red-500">{state.errors.data}</p>
        )}
      </div>

      <SubmitButton isPending={isPending} />

      {state.message && (
        <p className={state.success ? "text-green-500" : "text-red-500"}>
          {state.message}
        </p>
      )}
    </form>
  );
}

function SubmitButton({ isPending }: { isPending: boolean }) {
  // useFormStatus can access pendency from any child component
  const { pending } = useFormStatus();
  
  return (
    <button
      type="submit"
      disabled={isPending || pending}
      className="rounded-lg bg-blue-600 px-4 py-2 text-white disabled:opacity-50"
    >
      {isPending || pending ? "Processing..." : "Submit Action"}
    </button>
  );
}

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React 19 Server Action Workbench

Generate production-ready React 19 Form Actions with useActionState, useFormStatus, and useOptimistic boilerplates.

Key Takeaway (AI Summary)

"use client"; import { useActionState, useOptimistic, useFormStatus } from "react"; import { updateProfileAction } from "@/app/actions"; // Initial state for the action const initialState = { success: false, message: "", errors: null, }; export function UpdateProfileForm() { // useActionState handles pending state and server response automatically const [state, action, isPending] = useActionState(updateProfileAction, initialState); // Optimized for React 19 concurrent updates const [optimisticState, addOptimisticState] = useOptimistic( state, (currentState, newState) => ({ ...currentState, ...newState }) ); return ( <form action={action} className="space-y-4"> <div> <label className="block text-sm font-medium">Data Field</label> <input name="data" className="w-full rounded-md border p-2" disabled={isPending} /> {state.errors?.data && ( <p className="text-xs text-red-500">{state.errors.data}</p> )} </div> <SubmitButton isPending={isPending} /> {state.message && ( <p className={state.success ? "text-green-500" : "text-red-500"}> {state.message} </p> )} </form> ); } function SubmitButton({ isPending }: { isPending: boolean }) { // useFormStatus can access pendency from any child component const { pending } = useFormStatus(); return ( <button type="submit" disabled={isPending || pending} className="rounded-lg bg-blue-600 px-4 py-2 text-white disabled:opacity-50" > {isPending || pending ? "Processing..." : "Submit Action"} </button> ); }

React 19 Server Action Workbench

Action Configuration

Pro Tip: React 19 Actions

This tool saved you time?

Architecting Modern Forms with React 19 Actions

⚡ Key Features

Why use Server Actions?

Zero-Knowledge Execution & Edge Architecture

Why Local Workloads Matter

Network-Free Performance

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React 19 Server Action Workbench

Action Configuration

Pro Tip: React 19 Actions

This tool saved you time?

Architecting Modern Forms with React 19 Actions

⚡ Key Features

Why use Server Actions?

Zero-Knowledge Execution & Edge Architecture

Why Local Workloads Matter

Network-Free Performance

Related Tools You Might Like

Database Design Studio

JSON Formatter (Next.js 15 & React 19 Compatible)

Data Sanitizer

CSS Triangle Generator

CSS Gradient Generator

Markdown Table Generator

Recommended Tools & Services