Express Fileupload

Simple express file upload middleware that wraps around busboy
Alternatives To Express Fileupload
Project NameStarsDownloadsRepos Using ThisPackages Using ThisMost Recent CommitTotal ReleasesLatest ReleaseOpen IssuesLicenseLanguage
Express Fileupload1,4083,0564514 months ago45May 24, 202238mitJavaScript
Simple express file upload middleware that wraps around busboy
Graphql Upload1,3742,286116a month ago18June 28, 20223mitJavaScript
Middleware and an Upload scalar to add support for GraphQL multipart requests (file uploads via queries and mutations) to various Node.js GraphQL servers.
Youtube Clone Nodejs Api558
5 months ago3JavaScript
VueTube is a YouTube clone built with nodejs, expressjs & mongodb. This is the RESTful API repository.
Vue Nodejs Youtube Clone426
3 months ago31Vue
This is the frontend (VueJS) of the Youtube clone called VueTube.
Sharex Upload Server365
5 months ago35gpl-3.0JavaScript
AKA ShareS - Feature full & Stable ShareX and file server in node. Includes images, videos, code, text, markdown rendering, password protected uploads, logging via discord, administration through Discord, url shortening, and a full front end. Use standalone or via reverse proxy
Multipages Generator341
3 years ago26June 28, 20195JavaScript
🥇 generator for multiple pages webpack application
Jquery File Upload Middleware296242113 years ago18August 29, 201645JavaScript
jQuery-File-Upload Express.js middleware
Multer Gridfs Storage220291203 months ago30October 01, 202128mitTypeScript
🍃 GridFS storage engine for Multer to store uploaded files directly to MongoDb
Express Upload Progress113
9 years ago1mitJavaScript
File uploading with Express.js and progress bar
Blueimp File Upload Expressjs1066274 years ago29May 17, 201514JavaScript
A simple express module for integrating jQuery File Upload.
Alternatives To Express Fileupload
Select To Compare

Alternative Project Comparisons


Simple express middleware for uploading files.

npm downloads per month CircleCI Coverage Status

Help us Improve express-fileupload

This package is still very much supported and maintained. But the more help the better. If you're interested any of the following:

  • Ticket and PR triage
  • Feature scoping and implementation
  • Maintenance (upgrading packages, fixing security vulnerabilities, etc)

...please contact richardgirges '-at-'


# With NPM
npm i express-fileupload

# With Yarn
yarn add express-fileupload


When you upload a file, the file will be accessible from req.files.


  • You're uploading a file called car.jpg
  • Your input's name field is foo: <input name="foo" type="file" />
  • In your express server request, you can access your uploaded file from'/upload', function(req, res) {
  console.log(; // the uploaded file object

The object will contain the following:

  • "car.jpg"
  • A function to move the file elsewhere on your server. Can take a callback or return a promise.
  • The mimetype of your file
  • A buffer representation of your file, returns empty buffer in case useTempFiles option was set to true.
  • A path to the temporary file in case useTempFiles option was set to true.
  • A boolean that represents if the file is over the size limit
  • Uploaded size in bytes
  • MD5 checksum of the uploaded file

Notes about breaking changes with MD5 handling:

  • Before 1.0.0, md5 is an MD5 checksum of the uploaded file.
  • From 1.0.0 until 1.1.1, md5 is a function to compute an MD5 hash (Read about it here.).
  • From 1.1.1 onward, md5 is reverted back to MD5 checksum value and also added full MD5 support in case you are using temporary files.


Using Busboy Options

Pass in Busboy options directly to the express-fileupload middleware. Check out the Busboy documentation here.

  limits: { fileSize: 50 * 1024 * 1024 },

Using useTempFile Options

Use temp files instead of memory for managing the upload process.

// Note that this option available for versions 1.0.0 and newer. 
    useTempFiles : true,
    tempFileDir : '/tmp/'

Using debug option

You can set debug option to true to see some logging about upload process. In this case middleware uses console.log and adds Express-file-upload prefix for outputs.

It will show you whether the request is invalid and also common events triggered during upload. That can be really useful for troubleshooting and we recommend attaching debug output to each issue on Github.

Output example:

Express-file-upload: Temporary file path is /node/express-fileupload/test/temp/tmp-16-1570084843942
Express-file-upload: New upload started testFile->car.png, bytes:0
Express-file-upload: Uploading testFile->car.png, bytes:21232...
Express-file-upload: Uploading testFile->car.png, bytes:86768...
Express-file-upload: Upload timeout testFile->car.png, bytes:86768
Express-file-upload: Cleaning up temporary file /node/express-fileupload/test/temp/tmp-16-1570084843942...


  • Temporary file path is... says that useTempfiles was set to true and also shows you temp file name and path.
  • New upload started testFile->car.png says that new upload started with field testFile and file name car.png.
  • Uploading testFile->car.png, bytes:21232... shows current progress for each new data chunk.
  • Upload timeout means that no data came during uploadTimeout.
  • Cleaning up temporary file Here finaly we see cleaning up of the temporary file because of upload timeout reached.

Available Options

Pass in non-Busboy options directly to the middleware. These are express-fileupload specific options.

Option Acceptable Values Details
  • false (default)
  • true
Automatically creates the directory path specified in .mv(filePathName)
  • false (default)
  • true
Applies uri decoding to file names if set true.
  • false (default)
  • true
  • regex
Strips characters from the upload's filename. You can use custom regex to determine what to strip. If set to true, non-alphanumeric characters except dashes and underscores will be stripped. This option is off by default.

Example #1 (strip slashes from file names): app.use(fileUpload({ safeFileNames: /\\/g }))
Example #2: app.use(fileUpload({ safeFileNames: true }))
  • false (default)
  • true
  • Number
Preserves filename extension when using safeFileNames option. If set to true, will default to an extension length of 3. If set to Number, this will be the max allowable extension length. If an extension is smaller than the extension length, it remains untouched. If the extension is longer, it is shifted.

Example #1 (true):
app.use(fileUpload({ safeFileNames: true, preserveExtension: true }));
myFileName.ext --> myFileName.ext

Example #2 (max extension length 2, extension shifted):
app.use(fileUpload({ safeFileNames: true, preserveExtension: 2 }));
myFileName.ext --> myFileNamee.xt
  • false (default)
  • true
Returns a HTTP 413 when the file is bigger than the size limit if true. Otherwise, it will add a truncated = true to the resulting file structure.
  • 'File size limit has been reached' (default)
  • String
Response which will be send to client if file size limit exceeded when abortOnLimit set to true.
  • false (default)
  • function(req, res, next)
User defined limit handler which will be invoked if the file is bigger than configured limits.
  • false (default)
  • true
By default this module uploads files into RAM. Setting this option to True turns on using temporary files instead of utilising RAM. This avoids memory overflow issues when uploading large files or in case of uploading lots of files at same time.
  • String (path)
Path to store temporary files.
Used along with the useTempFiles option. By default this module uses 'tmp' folder in the current working directory.
You can use trailing slash, but it is not necessary.
  • false (default)
  • true
By default, req.body and req.files are flattened like this: {'name': 'John', 'hobbies[0]': 'Cinema', 'hobbies[1]': 'Bike'}

When this option is enabled they are parsed in order to be nested like this: {'name': 'John', 'hobbies': ['Cinema', 'Bike']}
  • false (default)
  • true
Turn on/off upload process logging. Can be useful for troubleshooting.
  • 60000 (default)
  • Integer
This defines how long to wait for data before aborting. Set to 0 if you want to turn off timeout checks.

Help Wanted

Looking for additional maintainers. Please contact richardgirges [ at ] if you're interested. Pull Requests are welcome!

Thanks & Credit

Brian White for his stellar work on the Busboy Package and the connect-busboy Package

Popular Upload Projects
Popular Express Projects
Popular Networking Categories
Related Searches

Get A Weekly Email With Trending Projects For These Categories
No Spam. Unsubscribe easily at any time.
File Upload
Express Middleware