Fast developer utilities with local-first processing.
Dev Atlas is a free developer toolbox for formatting, decoding, generating, converting, and inspecting common development data without adding another dependency to your workflow.
What Dev Atlas is for
The site is designed for quick debugging and data inspection tasks: paste a value, inspect the result, copy what you need, and continue working. Current tools cover JSON, JWT, timestamps, Base64, URL encoding, UUIDs, hashes, regular expressions, HTML entities, CSS, JavaScript, colors, and cron expressions.
Local-first by default
Tools run in your browser whenever possible. Values you paste into formatters, encoders, decoders, and converters are not intentionally uploaded to a Dev Atlas application server for processing. You can read more on the local processing page.
Editorial principles
Dev Atlas favors clear inputs, stable output areas, readable error messages, and practical examples. The goal is a calm utility site that helps developers finish small tasks quickly, not a noisy dashboard that gets in the way.