Tools

Developer Assistance Tools has 37 tools in seven categories. Each tool is a page of its own under /tools/<category>/<name>, and each runs in the browser.

Category	What it covers
Data	Notes, SQL, schemas, logs, CSV files, sizes and test payloads.
Text	Text utilities, Markdown, comparing and merging text, regular expressions and a command reference.
API	An OpenAPI and Swagger viewer, an HTTP header reference and a request composer.
Security	Certificates, encoding and hashing, UUIDs, passwords, generated sample data (Generators) and keys.
Media	PDF, images, SVG, colours and compression.
Diagrams	A draw.io editor and a whiteboard.
Dev	A JavaScript playground, HTML viewer, crontab, deploy manifest, dates, a prompt library and a JAR decompiler.

To find a tool by name, use the search box on the home page. See Getting started.