Top 6 Open Source JavaScript Libraries for Uploading Files

Various admin applications need a file upload element that helps the website users to load files onto the server.

To create beautiful components and make the file upload process easier, you can use JavaScript.

There are different file uploader plugins you can consider for your project. Here are the top 6 open-source JavaScript libraries for uploading files.

1.  FilePond

FilePond is an open-source JavaScript library that you can use to upload different types of files to your website or server. This uploader can optimize your images for faster uploads. It also accepts files, directories, remote URLs, blobs, and Data URIs. This library allows users to utilize different methods to upload files such as drag and drop.

You can also select files from the library or other sources and use the upload file function. The copy and paste method is another option you can consider, or you can use the API to add files to your site.

FilePond navigation also offers other helpful features such as image optimization, cropping, automatic image resizing, and filtering. These features also help you customize your photos, so they perfectly fit on your website. The file uploader is responsive and can be used on mobile and desktop devices.

2.  Upload.js

Upload.js offers pre-integrated cloud-based file storage and is designed for fast file uploading and hosting; it switches between single and multipart file uploads depending on the size of the file, making it suitable for larger file uploads as well.

If you are using different file types and formats, then a JavaScript file upload library will probably yield the best results. Additionally, it can handle multiple file uploads and provides file upload progress bars to help you monitor the progression of the upload process.

Upload.js uses an internal Exponential Moving Average (EMA) to identify all file upload events to provide a better visual experience to the users. It offers file upload validation which is automatically performed by the dashboard to ensure that all the files meet the standards.

It also provides other features used for fast image transformations like resizing, cropping, and converting images. This library offers unlimited daily uploads and permanent API storage. Users can also enjoy upload and download authentication to enhance security.

3.  Uppy

Uppy is a functional and sleek JavaScript file uploader that can integrate seamlessly with various applications. It consists of a comprehensible API and offers fast file uploading speeds. With this library, you can upload files from the local disk, Google Drive, remote URLs, Instagram, Dropbox, or external media like USBs.

You can also upload files from your camera using Uppy. This plugin allows you to edit metadata to upload perfect images to your website. If the file upload process is disrupted as a result of network hiccups, Uppy comes with a resumable file upload option. This feature allows the process to continue from where it stopped when connectivity is restored.

Therefore, you don’t need to worry about losing data or starting afresh if the upload process is disrupted. It also works perfectly well with file processing and encoding backends. The user interface is sleek and accessible to provide a seamless user experience.

The progress bar helps you monitor the uploading process, and the status bar provides more detailed progress. It offers elements like pause, resume, and cancel buttons to give you control of the process.

4.  DropzoneJs

DropzoneJs is one of the best open-source JavaScript file libraries that allow users to upload different types of files to websites. It provides a drag and drop file uploading option which is easy to use.

Additionally, it offers image previews that allow the users to edit or customize their photos to fit different websites. This file uploader is lightweight, and does not depend on other libraries. It is ideal for people who want to reduce the amount of data used by their website and loading time.

DropzoneJs is user-friendly, and it usually comes with a fast loading speed. It can handle multiple file uploads simultaneously which helps you save time if you are working on large projects.

Though you can upload many files at the same time, make sure they are not very big. The uploader also determines the type of files you can upload.

5.  Resumable.js

ResumableJs library provides simultaneous. multiple and stable file uploads designed to improve user experience. When the uploading process is disrupted, the uploader pauses it automatically, and it will resume when connectivity is restored.

You will not lose anything when your file upload is disturbed. It keeps retrying until the procedure completes, and it does not require human intervention. This means you can perform other tasks while the uploader handles everything on your behalf.

Another notable aspect of Resumable.js is that it splits large files into smaller chunks that are more manageable. When the upload of a certain chunk is affected, it is paused, and will resume later.

The uploader also allows the users to pause the process and resume it when they want. No data will be lost when file uploading is interrupted.

6.  jQuery File Upload

The jQuery file uploader is another open-source library that splits big files into smaller chunks to enhance the uploading speed.  It can upload other chunks and it will still come back for the ones that have failed. You can upload different files such as images, videos, and audio using this JavaScript library.

This uploader also allows the users to upload multiple files using the drag and drop option. The dashboard offers features like progress bars and file validation. It also supports cross-domain uploads and allows the users to customize the images to suit their sites.

There are multiple open-source JavaScript libraries for uploading files you can consider for your website. These libraries help you or the users to upload different types of files to your site, offering several features that make them ideal for various purposes.

While choosing a library, it is vital to make sure you fully understand its features and benefits. More importantly, you should understand the requirements of your project and site to ensure that the uploader you end up settling on aligns with your specific objectives.