Axios vs Fetch API: HTTP Clients Compared

Axios is a third-party HTTP client with a rich API while Fetch is the native browser standard — two approaches to network requests in JavaScript.

At a Glance

Key Differences

• Error Handling: The most common pain point with Fetch — it only rejects on network errors (DNS failure, connection refused). A 404 or 500 response is a successful fetch. Axios rejects on any non-2xx status code, making error handling consistent. With Fetch, you must check response.ok or response.status manually.
• Interceptors: Axios has built-in request and response interceptors — perfect for adding auth headers, logging, or transforming responses globally. Fetch requires wrapping the native fetch() in a custom function or using a library like fetch-intercept for the same behavior.
• JSON: Axios automatically parses JSON responses — response.data is ready to use. Fetch requires calling response.json() and handling the promise. Forgetting to call .json() or calling .text() on a JSON response are common Fetch mistakes.
• Bundle Size: Fetch is zero bytes — it’s built into every modern browser and Node.js 18+. Axios adds ~14 KB gzipped. For bundle-size-sensitive applications (mobile web, AMP pages), Fetch’s native availability is a clear advantage.

When to Choose Axios

Choose Axios when you need consistent error handling, request/response interceptors, upload progress tracking, or built-in timeout support. Axios’s simpler API reduces boilerplate — one error handler catches all HTTP errors, and interceptors let you add auth tokens in one place. Axios is the standard choice for enterprise React and Vue applications where these features matter. At DodaTech, Axios handles API requests between Doda Browser and its backend services.

When to Choose Fetch

Choose Fetch when bundle size is critical, you want zero dependencies, or you need the lowest-level control over HTTP requests. Fetch gives you access to the raw Request and Response objects, which is useful for Service Workers and progressive enhancement scenarios. Fetch is also the right choice for modern Node.js applications (18+) where Axios’ additional features aren’t needed, or when you’re writing edge functions (Cloudflare Workers, Deno) where third-party dependencies are limited.

Side by Side Code Example: GET and POST Requests

Axios

import axios from "axios";

// GET request
const getUsers = async () => {
  try {
    const { data } = await axios.get("https://api.example.com/users", {
      headers: { Authorization: "Bearer token" },
      timeout: 5000,
    });
    console.log(data);  // Auto-parsed JSON
  } catch (error) {
    console.error("Error:", error.response?.status, error.message);
  }
};

// POST request
const createUser = async () => {
  const { data } = await axios.post(
    "https://api.example.com/users",
    { name: "Alice", email: "alice@example.com" },
    { headers: { "Content-Type": "application/json" } }
  );
  return data;
};

Fetch

// GET request
const getUsers = async () => {
  try {
    const response = await fetch("https://api.example.com/users", {
      headers: { Authorization: "Bearer token" },
      signal: AbortSignal.timeout(5000),
    });
    if (!response.ok) throw new Error(`HTTP ${response.status}`);
    const data = await response.json();  // Must parse manually
    console.log(data);
  } catch (error) {
    console.error("Error:", error.message);
  }
};

// POST request
const createUser = async () => {
  const response = await fetch("https://api.example.com/users", {
    method: "POST",
    headers: { "Content-Type": "application/json" },
    body: JSON.stringify({ name: "Alice", email: "alice@example.com" }),
  });
  if (!response.ok) throw new Error(`HTTP ${response.status}`);
  return response.json();
};

Both make the same HTTP requests. Axios handles JSON parsing, error status rejection, and timeout configuration automatically. Fetch requires manual handling for all three but needs no library import and has zero bundle size.

FAQ

Related Comparisons

React vs Vue for frontend framework choices. TypeScript vs JavaScript for type safety.