Upload image base64 React
Tags: react, javascript, typescript, webdev
Published: 2021-03-09 22:19:01

Heeeey guys!

My name is <b>Gustavo Scarpim</b>, and I will show you how to make Upload image in base64 with React.

To get started, create a new project with <b>yarn create react-app myapp  --template typescript or npx create-react-app myapp --template typescript.</b>

Add dependencies: <b>yarn add or npm i styled-components react-icons</b>

Inside of SRC create:
![image](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/ew6qxdwm9ytqpy4zg8ok.png)
 
<b>Upload.tsx</b>

```
import React, { useState } from 'react';
import * as S from './upload';

import { BsUpload } from 'react-icons/bs';
import { ImSpinner2 } from 'react-icons/im';
import Logo from '../assets/logo.png';
import { setTimeout } from 'timers';

export default function Upload() {
  const [file, setFile] = useState<string>();
  const [imagePreview, setImagePreview] = useState<any>("");
  const [base64, setBase64] = useState<string>();
  const [name, setName] = useState<string>();
  const [size, setSize] = useState<string>();
  const [isLoading, setIsLoading] = useState<boolean>(false);

  const onChange = (e: any) => {
    console.log("file", e.target.files[0]);
    let file = e.target.files[0];
    if (file) {
      const reader = new FileReader();
      reader.onload = _handleReaderLoaded
      reader.readAsBinaryString(file)
    }
  }

  const _handleReaderLoaded = (readerEvt: any) => {
    let binaryString = readerEvt.target.result;
    setBase64(btoa(binaryString))
  }

  const onFileSubmit = (e: any) => {
    setIsLoading(true);
    e.preventDefault()
    console.log("bine", base64)
    let payload = { image: base64 }
    console.log("payload", payload)

    setTimeout(() => {
      setIsLoading(false)
    }, 2000)

  }

  const photoUpload = (e: any) => {
    e.preventDefault();
    const reader = new FileReader();
    const file = e.target.files[0];
    console.log("reader", reader)
    console.log("file", file)
    if (reader !== undefined && file !== undefined) {
      reader.onloadend = () => {
        setFile(file)
        setSize(file.size);
        setName(file.name)
        setImagePreview(reader.result)
      }
      reader.readAsDataURL(file);
    }
  }

  const remove = () => {
    setFile("")
    setImagePreview("")
    setBase64("")
    setName("")
    setSize("")
  }

  return (
    <S.Container>
      <form onSubmit={(e) => onFileSubmit(e)} onChange={(e) => onChange(e)}>
        <S.Card logo={Logo}
          width={imagePreview === "" ? 310 : 310}
          height={imagePreview === "" ? 400 : 480} >

          <S.Perfil top={imagePreview === "" ? 0 : -140}
            width={imagePreview === "" ? 120 : 145}
            height={imagePreview === "" ? 120 : 145} >
            {imagePreview === "" ?
              <BsUpload /> :
              <img src={imagePreview} alt="Icone adicionar" />
            }
            <input type="file" name="avatar" id="file" accept=".jpef, .png, .jpg" onChange={photoUpload} src={imagePreview} />
          </S.Perfil>

          {imagePreview !== "" &&
            <>
              <section>
                <label>Nome</label>
                <span>{name}</span>

                <label>Tamanho</label>
                <span>{size}</span>
              </section>

              <button type="submit" >
                {isLoading ?
                  <S.Spinner>
                    <ImSpinner2 />
                  </S.Spinner> :
                  <>
                    Salvar
                  </>
                }
              </button>
              <button type="button" onClick={remove} >Remover</button>
            </>
          }
        </S.Card>
      </form>
    </S.Container>
  )
}
```

<b>Upload.ts</b>

```
import styled from 'styled-components';

export const Container = styled.div`
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100vw;
  height: 100vh;
  background: #000;

  .flip-container {
  width: 300px;
  height: 200px;
  perspective: 1000px;
}

.flipper {
  position: relative;
	width: 100%;
	height: 100%;
  transition: transform 0.8s;
	transform-style: preserve-3d;
}

.flip-container:hover .flipper{
	transform: rotateY(180deg);
}

.front, .back{
  position: absolute;
  width: 100%;
  height: 100%;
}
`

export const Card = styled.div<{ logo: string, width: number, height: number }>`
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
  /* width: 310px;
  height: 600px; */
  width: ${props => props.width}px;
  height: ${props => props.height}px;
  padding: 15px;
  margin-top: 40px;
  border-radius: 25px;
  display: flex;
  justify-content: center;
  transition: all 1s;
  box-shadow: 0px 0px 10px 0px #FFF;


  background: #fff;
  background-image: url(${props => props.logo});
  background-repeat: no-repeat, no-repeat;
  background-position: 50% 5%, 200% -40%;
  background-size: 55%, 80%;
  animation: effectShow .4s cubic-bezier(.1,.82,.25,1);
  
  &:hover {
    transition: all 0.6s;
    box-shadow: 0px 0px 20px 10px #387289;
  }

  @keyframes effectShow {
    0% {
      transform: scale(1.4);
      opacity: 0;
    }
    100% {
      transform: scale(1);
      opacity: 1;
    }
  }

  button { 
    &:nth-last-child(2) {
      bottom: 55px !important;
      width: 80%;
      background: #387289;

      &:hover {
        transition: all 1s;
        background: #66CBBC;
      }
    }

    position: absolute;
    bottom: 15px;
    border-radius: 20px;
    border: none;
    background: #ed3a53;
    width: 50%;
    color: #fff;
    height: 30px;
    font-weight: bold;
    cursor: pointer;


    &:hover {
      transition: all 1s;
      background: #fd637b;
    }
  }

  section {
    display: flex;
    justify-content: center;
    flex-direction: column;
    position: absolute;
    margin-top: 120px;
    width: 80%;
    text-align: center;
    padding-top: 20px;
    transition: all 1.6s;

    label {
      font-size: 20px;
      margin-bottom: 8px;
      transition: all 1.6s;
    }
    
    span {
      transition: all 1.6s;
      font-size: 16px;
      margin-bottom: 8px;
      height: 18px;
      overflow: hidden;
      white-space: nowrap;
      text-overflow: ellipsis;
    }
  }  
`

export const Perfil = styled.div<{ top: number, width: number, height: number }>`
  width: ${props => props.width}px;
  height: ${props => props.height}px;
  margin-top: ${props => props.top}px;
  background: aliceblue;
  border-radius: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  transition: all 1s;

  svg { 
    width: 80px;
    height: 80px;
    transition: all 1s;
  }

  img { 
    width: ${props => props.width}px;
    height: ${props => props.height}px;
    border-radius: 100%;
    transition: all 1s;
  }

  input[type="file"] {
    opacity: 0;
    position: absolute;
    border-radius: 100%;
    cursor: pointer;
    z-index: 99999;
    width: 145px;
    height: 145px;
  }

  &:hover {
    transition: all 1s;
    box-shadow: 0px 0px 15px 2px #387289;
  }
`

export const Spinner = styled.div`
  position: absolute;
  display: flex;
  justify-content: center;
  margin-top: 7px;
  width: 100%;
  z-index: 9999;
  top: 0;
  animation: spin 1s 0.1s ease-in-out infinite both;

  @keyframes spin {
  from {
    transform: rotate(0);
  }
  to {
    transform: rotate(360deg);
  }
}
`

```

<b>Index.ts</b>

```
import React from 'react';
import ReactDOM from 'react-dom';
import reportWebVitals from './reportWebVitals';
import Upload from './pages/Upload';
import GlobalStyles from './globalStyles';

ReactDOM.render(
  <React.StrictMode>
    <GlobalStyles />
    <Upload />
  </React.StrictMode>,
  document.getElementById('root')
);

reportWebVitals();

```

And ready, your upload base64 project:

![Alt Text](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/xtl923ogupc62ru0kryq.gif)

See the project working:
<img src="https://github.com/GuScarpim/upload-image-react-base64/raw/main/front/src/assets/upload.gif" alt="Project in action" />

See the complete code here on GitHub <a href="https://github.com/GuScarpim/upload-image-react-base64" target="_blank"><b>Click here</b></a>

Check out the Project in action <a href="https://guscarpim.github.io/upload-image-react-base64/"><b>Deploy</b></a>

Thanks for reading.