valid-jpeg

Very simple node.js package to check if a jpeg image is valid

Installation

$ npm install valid-jpeg

Usage

// load the module
const imageValid = require('valid-jpeg');
 
...
 
// check if image.jpg is a valid jpeg image
imageValid.isValid('image.jpg', (err, valid) => {
    // check if error occurs
    if(err) 
        console.error('Oh no! Something went wrong!');
 
    // valid is true if image is a valid jpeg, false otherwise
    if(valid)  
        console.info('Valid jpeg!');
    else
        console.error('Not a valid jpeg');
});

Are you kidding? A simple jpeg checker?

A simple, plug-and-play module to check if a jpeg image is valid does not exist.

This module extracts the first 2 bytes of a file and checks if they are in equals to ffd8 (the magic number used by jpeg image).

That's it! :)