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Showing posts from January, 2026

S3Mate

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When working with AWS S3, I often receive S3 URLs that are not publicly accessible. These links can't be opened directly in a web browser, and they come in many different formats. For example: https://bucket.s3.amazonaws.com/key or https://s3.region.amazonaws.com/bucket/key Each time, I had to manually: 1) Figure out which format it was. 2) Extract the bucket and key. 3) Open the AWS Console. 4) Navigate to the correct object. This routine was repetitive and time-consuming. So I built S3Mate . It's a small desktop gadget that lets me paste any S3 URL, automatically resolves the bucket and key, and quickly shows or operates on the object without switching tools. The application detail, source code and releases can be found at the repository of the gadget at  https://github.com/tekichan/s3mate Even though S3Mate is a small project, I picked up a few useful lessons along the way. 1. Building Native Desktop Apps with jpackage I learned how to use jpackage to turn a Java applicat...