Developer tools

Guides to individual tools in DevT Pro: what each one does, when it is useful, and why everything runs locally on your device instead of in a browser.

JSON Formatter

Format, beautify and validate JSON locally, with no uploads, no account and no internet connection.

JSON to YAML

Convert JSON into clean, readable YAML for config files, CI pipelines and Kubernetes manifests.

cURL to Python

Turn cURL commands into Python requests code you can paste straight into a script or test.

Regex Tester

Test and debug regular expressions with live match highlighting and instant feedback.

JWT Decoder

Decode JWT headers and payloads locally before pasting a token into any web tool.

Base64 Decoder

Decode Base64 back into readable text without sending encoded payloads to an online service.

URL Encoder

Encode and decode text for URLs, including reserved characters and query parameters.

Timestamp Converter

Convert Unix timestamps to human-readable dates and back, in any timezone.

UUID / ULID Generator

Generate UUID v4 and ULID identifiers in bulk for databases, APIs and tests.

Hash Generator

Generate MD5, SHA-1, SHA-256 and other hashes to verify files and data offline.

QR Code Generator

Create QR codes from text or URLs, generated entirely on your device.

DevT Pro includes 120+ tools in total — see the full tool list on the homepage.