About

Android Dev Tools is a small collection of free, browser-based utilities for people who build Android apps. There are three of them so far: an APK size analyser, a launcher icon generator, and a Play Store listing preview.

Who makes this

My name is Moosa Faizal. I am an Android developer based in Kasaragod, Kerala, India, and I build and maintain everything on this site myself. There is no company and no team.

I have been publishing Android apps through the Google Play Console since 2023. That is the whole reason these tools exist — each one started as a script I wrote for my own projects, because I kept hitting the same problems and could not find a tool that solved them without asking me to upload my work to someone else's server first.

Why they run in your browser

Every tool here processes your files locally, inside your own browser. Nothing is uploaded, because there is no server to upload to — these are static pages.

That is not a marketing position. It is the only design that made sense. You should not have to send an unreleased build, or store listing copy you have not announced yet, to a stranger's website in order to find out how big a file is or whether an image has an alpha channel. It is also simply faster: the APK analyser reads a few kilobytes from the end of your file rather than transferring the entire thing.

How the tools are built

Each tool is plain HTML, CSS and JavaScript with no third-party libraries and no build step. The APK analyser parses the ZIP central directory directly. The icon generator writes its own ZIP archive. That keeps the pages small, fast, and free of code I have not read.

The parts that matter — density calculations, safe zone maths, Play Store limits, archive parsing — are covered by automated tests, and the archive writer is verified against the standard unzip integrity check.

What this site is not

It is not affiliated with, endorsed by, or connected to Google, Android, or the Google Play Store in any way. Android and Google Play are trademarks of Google LLC. These are independent tools built to match Google's published requirements, and those requirements change — always confirm against official documentation and Play Console before you release.

Corrections and requests

If a tool gives you a wrong result, or Play's rules have moved and this site has not caught up, please tell me. Accuracy is the entire value of a tool like this, and I would rather fix it than have someone rely on a stale number.

Email support@androiddevtools.in, or see the contact page.

Written and maintained by Moosa Faizal, Kasaragod, Kerala, India.