These free online tools allow you to extract various information about files and Android internals. Some of the tools are focused on photo & video processing.

Online APK Analyzer

APK Analyzer can extract information from compiled binary resources and AndroidManifest.xml files inside of your app's APK file

Android Partition Image Tool

Allows you to extract information from boot.img files, read-only mount sparse & raw ext4 image files, and browse and extract files inside of ext4 partitions

File Tool

Shows information and mime type of various binary files and because it is completely client-based, you can also use it to display information about very large files (several GB)

Image Histogram Generator

Generates image histogram graphs from multiple images in batch and also allows to export histogram values into .csv file for analysis in your spreadsheet application

Pano Stitch & Crop

Automatically stitches multiple overlapping photos into one larger panorama image and also allows to crop the final image to the preferred size

Images to video

Experimental tool that can create time-lapse video from multiple input images and also mux in audio into the final video file

Open source licenses of libraries I used to create my tools