About PromptTools.dev

A free platform for anyone who uses AI — built to help you write better prompts, get better results, and understand what's actually happening under the hood.

Why This Exists

PromptTools.dev started from a simple frustration: testing one prompt across ChatGPT, Claude, and Gemini meant three open tabs, three copy-pastes, and no easy way to compare the answers side by side — then cleaning up whatever markdown mess came back before it was usable anywhere else.

Every tool here removes one specific piece of that friction: analyze a prompt before spending tokens on it, test it against real models instantly, or clean up the output afterward. Nothing here is a thin wrapper around a single idea — each tool exists because we ran into that exact problem ourselves.

AI-Powered Tools

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Prompt Tester

Test any prompt on 8 real AI models and see the output instantly.

✨

Prompt Optimizer

Rewrite your prompt in 14 styles — concise, persuasive, technical, and more.

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Prompt Analyzer

Score your prompt across clarity, specificity, structure, and context.

⚖️

Model Compare

Run the same prompt on 2 models side by side and compare outputs.

✍️

AI Humanizer

Make AI-generated text sound natural and human-written.

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Email Reply Generator

Get 3 ready-to-send email replies from any email you receive.

⚙️

System Prompt Generator

Build production-ready system prompts with role, constraints, and guardrails.

📝

Meeting Notes / MOM

Turn raw meeting notes into structured Minutes of Meeting.

🖼️

Image to Prompt

Upload an image and get AI prompts that would recreate it.

📄

AI Resume Builder

Build ATS-optimized resumes with AI suggestions and keyword optimization.

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Token Calculator

Estimate token count and cost across all major AI models.

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Prompt Library

100+ high-quality, ready-to-use prompts for every use case.

Developer Utilities

22 free client-side utilities for developers — no API calls, no rate limits, instant results.

Who Runs This

PromptTools.dev is built and maintained by Adnan, a software developer who builds and ships small, focused web tools. Every tool on this site was built to solve a real problem encountered firsthand while working with AI models day to day — not generated as filler content.

Have a question, found a bug, or want a tool that doesn't exist yet? Reach out any time via the contact page.

Why Is It Free?

Core tools on PromptTools.dev are free to use — no signup, no credit card required. Each tool has a daily usage limit to keep the platform sustainable. The platform is supported by display advertising. A premium plan with unlimited access is coming soon.

Have a question or feedback?

We'd love to hear from you — whether it's a bug report, a feature idea, or just a hello.

Get in Touch