About ToolKitty
Fast, private, browser-based tools for developers and AI builders.
ToolKitty is a free collection of 17 developer and AI tools designed to be fast, accessible, and completely private. Everything runs in your browser — there are no accounts, no uploads, and no data leaving your device.
Why we built it
Most online utilities send your data to a server to process it. For sensitive content like JWTs, API payloads, SQL, and prompts, that is a privacy risk. ToolKitty flips that model: all processing happens locally using native browser APIs, so your data stays with you.
What’s inside
- 10 developer tools — JSON formatting, JWT decoding, regex testing, SQL formatting, diffing, and more.
- 7 AI tools — prompt building, token counting, system prompt generation, JSON schema design, and more.
Our principles
- Privacy first. Your input never leaves your browser.
- Fast. Tools open instantly and respond in real time.
- Accessible. Built for keyboard and screen-reader use.
- Free. Supported by unobtrusive ads, never by selling your data.
Get in touch
Have a tool request or feedback? Email hello@toolkitty.in or visit our contact page.