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Comparison9 min read

File Storage vs CKFinder, Flmngr, elFinder, Filestack, and Uppy

An honest comparison of embeddable file managers and upload tools for web apps - what each one is, where it shines, and when File Storage is (and is not) the better fit.

Most web apps eventually need somewhere for users to keep files: a CMS media library, a SaaS dashboard where customers upload documents, or an image picker inside a rich-text editor. You can build it, or embed a tool that already does it. The catch is that "file manager" covers very different products.

At a glance

A quick comparison of the headline capabilities. Details and trade-offs for each tool follow below.

CapabilityFile StorageCKFinderFlmngrelFinderFilestackUppy
What it isEmbeddable file managerFile managerFile manager + image editorOpen-source file managerHosted upload & delivery APIOpen-source upload widget
Folders, rename, move, deleteYesYesYesYesPartlyFile picker, not a library UINoUploads only
Your own S3 bucketYesThrough a small proxyPartlyVia server connectorPartlyVia its server packagePartlyVia volume driversYesCustom storageYesDirect-to-S3 uploads
Hosted storage optionYesManaged plansPartlyCKBox, a separate productNoSelf-hosted backendNoSelf-hostedYesCore offeringPartlyVia Transloadit
Rich-text editor pluginsYesTinyMCE, CKEditor 5, FroalaYesBuilt for CKEditorYesTinyMCE, CKEditor, FroalaPartlyCommunity connectorsPartlyVia picker SDKNo
Image editingPartlyRotate, flip, brightness (Pro)YesCrop, resize, rotateYesFull image editorPartlyResize, crop, rotateYesURL transformationsPartlyImage editor plugin
AI image taggingYesPro, via Amazon RekognitionNoNoNoYesIntelligence add-onsNo
Backend you runSmall Node proxy or HTTP API; none on ManagedPHP, Java, or ASP.NET connectorIts server packagePHP connectorNoneUpload endpoint or S3 signing
LicenceSubscription per websiteCommercial licenceCommercial licenceOpen source (BSD)Usage-based subscriptionOpen source (MIT)

built in partly, or with extra setup not a built-in feature, as far as we know

Two different kinds of tool

Before comparing features, decide which problem you are solving. File managers (File Storage, CKFinder, Flmngr, elFinder) give users a place to browse, organise, and reuse files they already have. Upload tools (Filestack, Uppy) focus on getting new files in quickly and delivering them. If your users never need to find an old file again, an upload tool may be all you need. If they do, you want a file manager.

CKFinder

A long-standing file manager from the makers of CKEditor. It runs a server connector (PHP, Java, or ASP.NET) next to your app and plugs straight into CKEditor.

Choose it if

  • Your app is already built around CKEditor
  • You run one of its supported server stacks
  • You want a mature, widely deployed tool

Trade-offs

  • You host and maintain the connector yourself
  • The UI is closer to a classic desktop file browser
  • The hosted version, CKBox, is a separate product and licence

Flmngr

A commercial file manager with a strong built-in image editor and integrations for the popular rich-text editors. It ships with its own server package.

Choose it if

  • Image editing inside the file manager matters most
  • You mainly need a picker for TinyMCE, CKEditor, or Froala
  • You are happy to install its backend

Trade-offs

  • One more server component to deploy and update
  • Less focus on a standalone media library inside your product UI

elFinder

A popular open-source, jQuery-based file manager with a PHP connector and pluggable volume drivers, including cloud storage through adapters.

Choose it if

  • You need a free, self-hosted option
  • Your stack is PHP and jQuery is acceptable
  • You have time to theme and maintain it

Trade-offs

  • Depends on jQuery and jQuery UI
  • Security hardening and upgrades are your responsibility
  • Modern React, Vue, or Angular apps need extra wrapping

Filestack

A hosted file upload and delivery platform: a picker widget, CDN delivery, URL-based transformations, and AI add-ons, billed by usage.

Choose it if

  • You mostly need uploads plus a CDN and on-the-fly transformations
  • You prefer a fully hosted pipeline with no backend
  • Usage-based pricing suits your traffic

Trade-offs

  • It is an upload and delivery API, not a folder-based media library
  • Costs grow with uploads, transformations, and bandwidth

Uppy

A modular, open-source upload widget from Transloadit. It handles drag-and-drop, resumable uploads, and direct-to-S3 transfers very well.

Choose it if

  • You only need a great upload experience
  • You want open source and full control
  • Browsing existing files is not a requirement

Trade-offs

  • No folders, search, or library view - you build those yourself
  • You still need an endpoint or S3 signing on your server

Building your own

A basic upload form takes an afternoon. A file manager people actually like - folders, drag-and-drop, parallel uploads with progress, search, previews for images, PDFs, and video, trash and restore, permissions, and secure storage access - usually takes weeks, and then needs maintaining. Build it yourself when file management is your product, or when your requirements are unusual enough that no tool fits.

When File Storage fits

  • You want a media library inside your own product, not a separate admin tool - it mounts into any element with one mount() call and works in React, Vue, Angular, or plain HTML.
  • You want files in your own bucket: AWS S3, R2, MinIO, Azure Blob, or Google Cloud, with keys kept on your server - or Managed storage if you would rather not run AWS at all.
  • You need editor integration and a library from one tool: the same file manager works as a picker in TinyMCE, CKEditor 5, and Froala.
  • You want a generous Free tier that still scales: ship on Free with BYO S3 or 1 GB managed, then Pro from $29/mo for white label, AI, and image editing - with no markup on your own storage bandwidth.

When something else fits better

We would rather you pick the right tool than the wrong one. Consider an alternative if:

  • You need a free, open-source tool you can fork with no license check - elFinder or Uppy are better choices (we offer Free forever for production embeds with hard caps and a badge).
  • Advanced image editing (cropping, filters, annotations) is central to your app - Flmngr's editor still goes deeper; our full editor unlocks on Pro.
  • You only need uploads plus CDN transformations, with no browsing - Filestack or Uppy are simpler.
  • You need Drupal or Joomla modules today - ours are on the roadmap but not available yet.

How to decide in 15 minutes

  1. Do users need to browse and reuse existing files, or only upload new ones?
  2. Where must the files live - your bucket, a vendor's cloud, or either?
  3. Which rich-text editor, if any, needs a file picker?
  4. What backend are you willing to run: none, a small proxy, or a full connector?
  5. Which pricing model fits: per website, per usage, or free and self-maintained?

Then try the shortlist with real files. Our playground runs the full File Storage UI with about 100 sample files - no sign-up or card needed.

See File Storage with your own eyes

Open the full file manager in your browser, then read the integration guide.

Last reviewed 9 October 2026, based on each vendor's public documentation. Products change - check vendor sites for current features and pricing. Spotted something out of date? Email [email protected] and we will correct it.