HTTrack is a free software (GPL) offline browser utility allowing you to download (copy) a website from the Internet to a local directory building recursively all directories getting html images and other files from the server to your device.

HTTrack arranges the original site's relative link-structure. Simply open a page of the "mirrored" website in your browser and you can browse the site from link to link as if you were viewing it online.
HTTrack can also update an existing mirrored site and resume interrupted downloads.

(This is the Android version of the popular Website Copier.)

Version 3.50 is the first Android release in nine years rebuilt on the current HTTrack engine.

Sites that use HTTPS work again because the 2017 build's TLS had fallen too far behind the web. The app also captures more of a modern page including responsive and lazy-loaded images. It is 64-bit and runs on current versions of Android.

You can save a mirror to a shared HTTrack folder that other apps can open and read a finished one in your own browser.

The options screen carries the engine's own settings. You control which URLs are included how deep and how large a copy gets and how fast it downloads.

There are no ads no trackers and no account to create. The app is open source under the GNU General Public License and its code is on GitHub at github.com/xroche/httrack-android.