The #1 File Upload API for Developers

Integrate end user content into your app via the Filestack API, built to manage digital assets at scale. 

From an image upload or transformation to display and delivery for the perfect user experience, Filestack powers the full content journey –

all in a simple to use, secure file API. 


Filestack is the only secure Digital Content Platform

In the age of GDPR and consumer security, Filestack is the only security focused Digital Content Platform. 

Build the content experiences you’ve always wanted in your apps without compromising on the security and privacy of your users data.

Filestack Workflows makes it happen.

With one simple to use API, you can shorten the time from creation to curation for use within your app. The result is a more dynamic, engaging and consistent experience for the user.

Workflow diagram

Here’s what the #1 developer service for content can do for your business.

Icon Upload


Get user content from anywhere and dramatically improve any file or video upload with a powerful, easy to use API. Uploads, URL ingestion and iOS/Android device integration are all made fast and easy via the #1 developer service for uploads.

Icon Transform


Prepare content to be just right. Easily transform, convert and optimize images, files and videos right on the network-before it even arrives in your app.

Icon Intelligence


Uncover insights within your images and understand your content with custom machine learning built just for your business. Filter, tag, categorize and analyze all at scale, delivered in a simple API.


Content in Context. Prepare responsive audio, video, image and document files to be delivered fast, optimized and secure powered by the Filestack CDN. Easily display content inside your application with the Filestack embeddable viewer.

Control every aspect of user content with powerful end-to-end workflows

Build a streamlined user workflow with Filestack’s essential tools and advanced control analysis.

Upload - Filestack's file upload API provides rich UIs and easy integrations to source user content wherever it lives.

Moderate - Automatically inspect content to ensure it meets your standards. Quarantine any file that doesn't. Keep your content safe and appropriate for your audience.


Transform - Optimize user content for delivery with our image manipulation API. Crop, resize, compress, or otherwise edit the contents through URL-based transformations.

Inspect - Gain insights from your content with AI based tagging, object recognition, OCR, and analysis.

Deliver - Put content in context with responsive assets perfectly suited for your application. All delivered with perfect optimizations and at blazing speeds across a worldwide CDN.

" It's simplified the process of managing users photos while allowing us to focus on building new features that address the challenges our customers are facing. "


Just One Integration, One Time...

Filestack connects you with a multitude of services with one simple integration. You never have to worry about updating API integrations again. This is all part of the magic that is “File Upload as a Service”.  We update for other API changes, and will never depreciate our API or force unwarranted changes on you.

Libraries & SDKs -Choose from our SDKs to get started.

No maintenance required – Once you integrate, you’re done. Never worry about changing APIs disrupting your file workflow again.
Dev-to-dev support – Your files are always our #1 concern. We are always here to help you get up and running and assure the best performance.
" Being smart here, in my opinion, is seriously looking at Filestack to give you a fantastic uploading experience, while you spend your time on your product vision, not already-solved problems. "


import * as filestack from 'filestack-js';
const client = filestack.init('YOUR API KEY');
client.upload(fileObject).then(data => console.log(data.url));
gem 'filestack'
client ='YOUR_API_KEY',
security: security_object)
filelink = client.upload(filepath: '/path/to/file')
$ composer require --prefer-dist

use Filestack\FilestackClient;

$client = new FilestackClient('YOUR_API_KEY');
$filelink = $client-upload('/path/to/file');
$ pip install filestack-python

from filestack import Client
client = Client("")

params = {'mimetype': 'image/png'}
new_filelink =
Icon Scale

Handle ANY Scale

Filestack is a purpose-build cloud platform designed to handle large-scale transformation needs across millions of files.

Icon Secure

Keep Content Secure

Powerful encryption and security keeps your content safe and allows Filestack's API to work with even sensitive files and user images.

Icon Deliver Fast

Never Slow Down Your App

Offloading CPU intensive image and file conversions to Filestack can dramatically increase the speed of your sites and applications.

Let's Get Started.

Talk to us about how simple it can be to get started with Filestack.​