Like most developers, I search Google every single week for quick utilities:
- Formatting, validating, or minifying dirty JSON
- Calculating OpenAI & Claude API prompt costs
- Decoding JWT payloads
- Converting cURL commands to modern Fetch or Python requests
- Generating and decoding Cron schedule expressions
Almost every site on Google for these tasks is painful:
- Cluttered with 10+ slow, blinking video ads
- Asking for a sign-up or paid subscription
- Sending sensitive company tokens, API keys, or config payloads to a remote backend server
I decided to solve this by building AI Tool Suite:
👉 https://aitoolsuite.lol
⚡ What Makes It Different:
- 100% Client-Side Privacy: Everything executes in your local browser memory using modern Web APIs. Your code and secrets never touch any remote server.
- Sub-50ms Speed: Instant results as you type with zero server roundtrips.
- Completely Free: No paywalls, no login screens, and no tracking.
🛠️ What's Inside (47 Tools So Far):
- Modern AI Utilities: OpenAI Structured JSON Schema Generator, AI Embedding & Vector Storage Calculator, Context Window & KV-Cache Estimator, AI Prompt Cost Calculator.
- APIs & Data: cURL to Fetch / Python, JSON to TypeScript / CSV / .env / YAML, JSON Minifier, SQL Beautifier, JWT Debugger.
- DevOps & CSS: Cron Explainer, Chmod Calculator, IPv4 CIDR Subnet Calculator, CSS Grid Generator, Tailwind Palette Creator, CSS Box Shadow Generator.
Check it out here: https://aitoolsuite.lol
💬 What should I build next?
I'm actively adding new utilities every single day. What is one repetitive tool or converter you wish existed in your daily workflow?
Let me know in the comments below! 👇
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