React-Toastify: adding toast notifications to a React app

What React-Toastify solves, and who ends up using it

A toast is a short message that appears over the interface, stays for a few seconds, and leaves without the user dismissing a dialog. React-Toastify packages that pattern into a component and a function. You mount ToastContainer once, and from then on any module in the app can call toast("Wow so easy!") without threading state, props or context through the component tree.

The README frames the target audience by its feature list rather than by a persona: developers who want notifications working quickly, who need RTL support, swipe-to-close, per-toast behaviour, a progress bar, dark mode and stacked notifications. That list describes an application with a design system already in place and a need to match it. The library is not opinionated about how your app is structured, which is why it is used from small demos up to larger React front ends.

It is also a client-side library. Nothing in the README or the package layout suggests server rendering of toasts, queueing, persistence or delivery guarantees. If you need a notification to survive a page reload or reach a user who is not currently looking at the tab, this is the wrong layer.

The mechanism: a container, a function, and a CSS file

The architecture is deliberately flat. ToastContainer is the render target: it is the element that owns where toasts appear, how many can be on screen, and which transition plays. The toast function is the imperative entry point that pushes a notification into that container. There is no provider, no hook that must wrap your tree, and no store you have to configure.

Because the call site is a plain function, it works from event handlers, from async code, and from modules that are not React components at all. The README also notes that a React component can be rendered inside a toast, and that onOpen and onClose hooks can access the props passed to that component. That is the seam where per-toast logic lives: you hand the component its data, and the lifecycle callbacks get the same props back.

The repository layout matches the split. src/ holds the library, packages/ and playground/ hold the workspace pieces used during development, and the build script runs tsup and then copies src/style.css to dist/ReactToastify.css. That copy step is why the stylesheet is a separate import rather than something bundled into the JavaScript. It is also why a missing CSS import is the most common way a first attempt looks broken: the toasts render, but unstyled.

Installing React-Toastify and firing a first toast

The README gives two package manager commands. Either one installs the library into your project.

npm install --save react-toastify

yarn add react-toastify also appears in the README as an equivalent. After installation, the README's example is a component with a button that calls toast, plus ToastContainer rendered somewhere in the tree.

import React from 'react';

import { ToastContainer, toast } from 'react-toastify';

function App(){
  const notify = () => toast("Wow so easy!");

  return (
    <div>
      <button onClick={notify}>Notify!</button>
      <ToastContainer />
    </div>
  );
}

Clicking the button should produce a toast in the default position. If nothing appears, check that ToastContainer is actually mounted and rendered, because the toast function has nowhere to send the notification without it. If something appears but looks like plain text at the bottom of the page, the stylesheet is missing. The build copies src/style.css to dist/ReactToastify.css, so the import path to try is the one the documentation site gives for your setup.

For TypeScript projects the package ships type definitions, and the peer dependency range is react ^18 || ^19 and react-dom ^18 || ^19. Installing it into an older React version will produce a peer warning rather than a silent failure.

Where React-Toastify gets in the way

The README is a feature list, not a manual. Options, positioning, transitions and the exact CSS import path are pushed to the documentation site, and the README itself says only "Check the documentation to get you started". That is fine for a library this widely used, but it means the README alone is not enough to answer most configuration questions, and the answers are not in the repository's top-level files either.

The second cost is the stylesheet. Shipping a CSS file separately means every consumer has to import it, and the import path depends on the bundler, the framework and whether the app is doing server rendering. The repository's build step exists precisely to place that file at dist/ReactToastify.css, so the path is stable, but the responsibility for importing it is yours. Frameworks that require CSS to be imported from a specific location, or that strip unknown global CSS, will need attention here.

Third, the imperative API is a double-edged choice. Calling toast from anywhere is convenient, and it also means a toast can be triggered from a code path with no component context to clean up after it. The library offers programmatic removal and per-toast behaviour for exactly this reason, but a codebase that sprinkles toast calls through data layers will be harder to reason about than one that keeps them near the UI that initiated the action.

React-Toastify compared with React Hot Toast

The two libraries solve the same problem and differ in where the weight sits. React-Toastify is the larger of the two in surface area: the README lists swipe to close, a configurable swipe direction, animation support that works with something like animate.css, rendering a React component inside a toast, onOpen and onClose hooks with access to the component's props, programmatic removal, per-toast behaviour, pausing when the window loses focus, a progress bar, toast updates, limiting how many toasts show at once, dark mode, programmatic pausing and stacked notifications.

React Hot Toast takes the opposite approach: a smaller, more opinionated API with fewer knobs. If your design calls for a plain success or error message and you want the library to decide how it looks, that smaller surface is an advantage. If you need the toast to match a bespoke design system, to carry a React component with its own props and lifecycle, or to behave differently on a per-toast basis, React-Toastify's feature list is the reason to pick it.

The honest trade-off is that the same list is a maintenance surface. More options means more configuration to read and more places for a version upgrade to change behaviour. Neither library offers delivery guarantees, persistence or queuing in the README, so that comparison does not decide anything.

Maintenance, versions and the MIT licence

The repository is not archived, and the last push was on 2026-04-19, which is also the date of the v11.1.0 release. The release before that, v11.0.3, is dated 2025-01-15, with v11.0.2 on the same day. So the project has a long quiet stretch followed by a release, which is worth knowing if you are planning around a fix landing quickly.

The package declares MIT in package.json and the README states the project is licensed under MIT. That permits commercial use and modification, and it comes with no warranty. This is a description of the licence text, not legal advice; if your organisation has rules about attribution or about bundling third-party code, run the licence past whoever handles that.

Upgrade cost is mostly the peer range and the CSS. The declared peer dependencies are react ^18 || ^19 and react-dom ^18 || ^19, so a React upgrade is a real constraint on when you can move. The published files are dist and addons, so the stylesheet path and the addons entry point are the two import surfaces to check when you bump versions. The repository has no documented rollback procedure in the README.

Editorial conclusion

Adopt React-Toastify when you want toast notifications controlled from ordinary JavaScript rather than from component state, and when you are willing to import its CSS and read the documentation site for options. Skip it if your notifications must survive a full page reload, or if you want a library with no stylesheet to ship. Before committing, verify the dist/ReactToastify.css import path against your bundler, confirm your React version satisfies the ^18 || ^19 peer range, and check the release notes for the version you install.

Frequently asked questions

Official sources

1. fkhadra/react-toastify on GitHub
2. License: MIT
3. Project website
4. README
5. Releases