About ToolKitty
Fast, private, browser-based tools for developers and AI builders.
ToolKitty is a free collection of 54 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
- 5 formatters — JSON, SQL, XML/HTML beautification and validation.
- 10 converters — JSON↔YAML, JSON↔CSV, Base64, cURL to Fetch/Axios, SVG to JSX, and more.
- 4 generators — UUID, hash, cron expression, and QR code generation.
- 7 utilities — JWT decoding, regex testing, URL parsing, diff viewing, and JavaScript editor.
- 7 AI tools — prompt building, token counting, system prompt generation, JSON schema design, and more.
- 8 PDF tools — merge, split, compress, extract pages, rotate, protect, and convert PDFs to text.
- 6 image tools — compress, crop, convert between PNG/JPG/WebP, and optimize SVGs.
- 7 calculators — age, BMI, EMI, salary, percentage, discount, and GST calculators.
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.