ToolKitty — Dev & AI Tools

Quick access to 50+ free developer & AI tools — JSON formatter, Base64, JWT decoder, PDF tools and more. In-browser.

Get instant access to 50+ free, privacy-first developer and AI tools right from your browser toolbar. 🔧 DEVELOPER TOOLS • JSON Formatter, Validator, Viewer & Diff • JSON to YAML, CSV, TypeScript converter • Base64 Encode/Decode • JWT Decoder • Regex Tester • SQL Formatter • cURL to Fetch/Axios • UUID & Hash Generator • Cron Expression Builder • URL Parser • XML/HTML Prettifier • SVG to JSX • .env Parser 🤖 AI TOOLS • Prompt Builder & Optimizer • System Prompt Generator • Token Counter • AI JSON Schema Builder • Embedding Inspector • Model Comparator 📄 PDF TOOLS • Merge, Split, Compress PDFs • Extract pages & text • Rotate, Lock & Unlock 🖼️ IMAGE TOOLS • Compress images • Crop, PNG↔JPG, WebP converter • SVG Optimizer 🧮 CALCULATORS • Age, Percentage, EMI, GST, Salary, BMI, Discount ✅ WHY TOOLKITTY? • Zero permissions — we don't access your data • All tools run in your browser — nothing uploaded • Dark theme, instant search, category filters • Completely free, no account needed Open any tool in one click from the popup. All tools are hosted at toolkitty.in.