If you work for a company using DeepL’s API, installing a cracked version on a work machine violates cybersecurity policies. DeepL also actively monitors for license abuse; if your IP is found using a stolen key, they will ban all accounts associated with that IP range.

A less noisy threat: remote access trojans (RATs) like AsyncRAT. The attacker can silently watch your screen, log keystrokes (including passwords), and download files.

Log into translate.deepl.com with your Pro account. The web version offers:

Pro tip: Add the site to your browser’s bookmarks toolbar and enable offline mode in browser settings for limited offline access (recently translated phrases are cached).

While not truly portable, you can:

This is unsupported and may fail due to registry dependencies. Most users will find it simpler to use the web app.

Using this software violates DeepL's Terms of Use. Distribution or use of software intended to bypass licensing constitutes a violation of intellectual property rights and copyright law in most jurisdictions.

In legitimate software contexts, "portable" implies a version of an application that can be run from a USB drive or other external media without requiring installation into the system registry. DeepL does not officially release a "Portable" version of its Pro desktop client. The official client is distributed as an installer (.exe or .msi) and requires integration with the operating system to manage licenses and updates. The existence of a "Portable" version indicates that the original binary has been reverse-engineered and modified by a third party.