2022-03-11
5974
#react
Uzochukwu Eddie Odozi
19734
Mar 11, 2022 â‹… 21 min read

Build a drag-and-drop image uploader with react-dropzone

Uzochukwu Eddie Odozi Web and mobile app developer. TypeScript and JavaScript enthusiast. Lover of Pro Evolution Soccer (PES).

Recent posts:

Exploring The Top Rust Web Frameworks

Exploring the top Rust web frameworks

In this article, we’ll explore the best Rust frameworks for web development, including Actix Web, Rocket, Axum, warp, Leptos, Cot, and Loco.

Abiodun Solomon
May 28, 2025 â‹… 11 min read
How To Use The CSS Cursor Property

How to use the CSS cursor property

A single line of CSS can change how users feel about your UI. Learn how to leverage the cursor property to signal intent, improve interaction flow, and elevate accessibility.

Chizaram Ken
May 28, 2025 â‹… 6 min read
Build TypeScript App Vite

How to build a React + TypeScript app with Vite

We explore the benefits of building an app with React, TypeScript, and Vite, and compare its performance to the same app built with CRA.

Clara Ekekenta
May 28, 2025 â‹… 7 min read

How to use Claude to build a web app

Learn how to build a weather app using Claude, from setting up infrastructure to creating a functional UI that displays city-based forecasts.

Andrew Evans
May 28, 2025 â‹… 8 min read
View all posts

8 Replies to "Build a drag-and-drop image uploader with react-dropzone"

  1. Amazing Tutorial. I learned a lot. I actually extended it to upload csv files and adding rows to my table on each file drop. One issue I see in the code which I am trying to fix is that if you drop same file multiple times, it doesn’t display it in the list which is good but it keeps it somewhere in validFiles list and therefore if you delete that file from UI, another version of that file will appear because you tried to dropped it multiple times.

    If you know its fix, please do share with me. Thanks a lot for writing such a detailed tutorial.

  2. const handleFiles = (files) => {
    for (let i = 0; i item.name === files[i].name)
    if (!x) { same as now

  3. hello, very good tutorial,
    but if I want to upload pdf files instead of images, what would be the validation function?
    Thanks!

Leave a Reply