About Data Dev Lab

Data Dev Lab is an independent collection of focused browser utilities for developers and technical users. The current tools decode and encode Base64, preview Base64 images, calculate file hashes and validate or format XML.

Local-first by design

Tool inputs and files are processed in your browser. There is no account and no server upload for tool content.

Built for clear results

Each tool describes what it accepts, what it returns and where its limits are. The goal is to solve one data task quickly without turning it into a larger workflow.

For feedback or questions, visit the contact page.