February 2026

In February 2026, we added the ability to zip or unzip archive files, use STS AssumeRole authentication with S3 Servers, log into child sites on the Desktop or Mobile apps, and use our REST API to upload or download in a single API call. Minor updates include quality-of-life improvements for the desktop app, mobile app, and web interface.

Zip & Unzip

Files.com supports zipping and unzipping files directly within your site. You can bundle multiple files and folders into a single .zip archive for sharing or delivery, or extract the contents of an existing archive into a folder without downloading it first.

In the web application, select files or folders and choose "Save as Zip" to create a .zip, or select a .zip and choose "Unzip" to extract it.

Zip and unzip operations are available in the Web Interface, CLI, and SDKs/APIs. They run as background operations, so large archives and deeply nested folder structures process without blocking your work.

You can also view the contents of a .zip file before extracting it to confirm what it contains, which is useful for large archives where you only need a subset of the files inside.

Learn more about using Zip & Unzip.

Support for STS AssumeRole Authentication with S3

Files.com supports connecting to Amazon S3 using AWS Security Token Service (STS) with IAM role assumption. Instead of providing long-lived Access Key credentials, you can configure Files.com to assume an IAM role in your AWS account and use temporary credentials issued by AWS.

This matches AWS best practice for cross-account access and removes the need to store static credentials in a third-party system.

Learn more about Amazon S3 Remote Servers.

Access Child Sites from Mobile and Desktop apps

The Files.com Desktop and Mobile apps allow you to connect directly to child sites that you have access to, just as you would when logging in to a parent site. Users with delegated access to child sites have more flexibility in how they connect, instead of being restricted to the web interface.

In the Desktop App, you can also create separate connections for multiple sites and switch between them easily. Mounted drive mode lets normal users easily move files between the sites they can access without administrator access or automated syncs.

Learn more about Accessing Child Sites.

Single Stream API Endpoints for Uploads & Downloads

The REST API offers Single Stream upload and download API endpoints, allowing developers to transfer files with a single HTTPS request. With these endpoints, a file can be uploaded in a single POST request or downloaded directly as the raw response body.

Use Single Stream transfers when a Files.com SDK is not practical for your integration. Optimized transfers through our SDKs are still the recommended option for maximum performance and reliability, and Single Stream is the right choice when your environment only supports straightforward HTTP-based integration.

Learn more about File Operations in our Developer Documentation.

Other Minor Updates

SFTP Cipher Negotiation

The Files.com SFTP service now prioritizes secure ciphers during cipher negotiation when a connecting client supports them. This behavior is automatic and requires no configuration.

SFTP clients that only support insecure ciphers remain subject to your site's existing settings for allowing insecure ciphers. If insecure ciphers are disabled, those clients must use a secure cipher supported by Files.com to connect.

The best way to avoid insecure ciphers is to ask your clients, vendors, and counterparties to upgrade to the latest version of any SFTP client app they use.

Learn more about using Legacy Insecure Ciphers.

Desktop App Improvements

The Files.com Desktop App now includes additional overwrite options, letting you apply the same overwrite behavior to all uploads or for the duration of your current session. You can also configure how mounted drive letters are assigned for a connection. Other improvements include easier access to log files and updated file type icons in folder listings.

Mobile App Improvements

The Mobile App includes several quality-of-life improvements. Uploading multiple files is now easier, you can refresh your view by pulling down on the screen, and a new media picker makes it simpler to upload photos from your device's gallery.

Web Interface Improvements

We've improved visibility into folder settings that automatically affect file behavior. Folders with enabled automatic features display a notice indicating the active behavior, including GPG actions, public hosting, file expiration, automatic renaming of uploaded files, or automatic reorganization of files into subfolders.