Developer Tools
A complete toolkit for developers — format, encode, generate, convert, and debug everything from JSON to CSS to cryptography.
About the developer tools
These are the small utilities developers reach for dozens of times a week: inspecting a JSON payload or decoding a JWT from an API, finding the line that breaks a YAML or XML config, formatting a SQL query an ORM produced as one long line, encoding a value for a URL or Base64, computing a SHA-256 to verify a download, building CSS gradients, glass panels, clip-path shapes, easing curves, loaders, buttons and background patterns, turning a title into a slug, and generating shades and mixing colours, cleaning up text and converting case, and translating a color or a number between the formats that different tools expect. Each one runs locally in the browser, so it is safe to paste tokens, credentials or customer data — the text never leaves your machine.
The JSON tool formats and validates documents, shows them as a collapsible tree, and minifies them for transport; it reports the exact line and character of a syntax error rather than a generic failure. The Base64 encoder and decoder handles UTF-8 text correctly (including emoji and non-Latin scripts) and supports the URL-safe alphabet used in JWTs and query strings. The color converter moves between HEX, RGB, RGBA, HSL, HSV and CMYK, and explains what each model is actually measuring so you can choose the right one for the job.
Every tool in this section is paired with a written guide covering the underlying format — how Base64 works and why it inflates size by a third, what the JSON specification does and does not allow, and how the color models relate to one another. The guides are linked from each tool page and from the Guides section in the navigation.
Guides
Longer articles on the problems these tools solve — what is actually going wrong, what each fix costs you, and which tool to reach for.