AI Toolkit · v2.0 · Ai by Gemini

AI Developer Tools to ship faster.

Six focused, free tools powered by Google Gemini — convert code between languages, explain unfamiliar snippets, debug bugs, generate unit tests, write READMEs and produce SQL queries. Streaming answers, no sign-up, everything runs on our secure server.

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Streaming answers
Gemini flash latest
6 tools · 1 place

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Input

Convert fromto

Python source0 / 20,000

TypeScript output

Paste your input on the left and hit Generate

Why developers love it

Answers stream in real time.
Task-tuned prompts for each tool.

All the AI tools

Every AI helper, one keystroke away

Focused, task-specific prompts — not another generic chatbot.

Documentation →

AI Code Converter

Code

Translate code between programming languages instantly.

Open

AI Code Explainer

Code

Understand any code — line by line, in plain English.

Open

AI Code Debugger

Code

Find bugs, understand root cause, get a fixed version.

Open

AI Unit Test Generator

Testing

Auto-generate tests for functions, classes and modules.

Open

AI README Generator

Docs

Turn project details into a polished README.md.

Open

AI SQL Query Generator

Database

Describe what you want — get correct SQL.

Open

Real use cases

Built for the developer's day-to-day

Every tool is prompt-engineered for a specific job. Skip the generic chatbot and jump straight to the answer you actually need.

Migrating a codebase

Convert whole files from Python to TypeScript, JavaScript to Go, or React class components to hooks — keeping the logic intact while adopting idiomatic patterns for the target language.

Onboarding new engineers

Paste an unfamiliar snippet from your legacy code and instantly get a senior-engineer style walkthrough with time / space complexity and callouts for edge cases.

Fixing production bugs

Drop in a stack trace and a bug report. Get a bug list, root-cause analysis, a corrected version and prevention tips — all in seconds.

Reaching test coverage targets

Auto-generate happy-path, edge-case and error-handling tests in Jest, Vitest, pytest, JUnit, Go testing and more — straight from your function signature.

Shipping open-source projects

Turn a rough project description into a polished README with badges, TOC, installation, usage and contributing sections — ready to paste into GitHub.

Analytics and reporting

Describe your schema in plain English, get correct SQL with CTEs, window functions and JOINs — plus an explanation and assumptions in a single answer.

How it works

From paste to answer in three steps

Choose your tool

Pick from six task-specific AI tools — each with a hand-crafted system prompt tuned for the job. No prompt engineering required from you.

Paste your input

Drop in your code, buggy snippet, project details or SQL question. Up to 20,000 characters. Everything is sent server-side over HTTPS.

Watch it stream

Answers stream token-by-token from Gemini so you see progress immediately. Copy, download or clear when you’re done.

What each tool does

The complete AI dev toolkit — explained

AI Code Converter

Code

Convert code between JavaScript, TypeScript, Python, Java, C#, Go, Rust, PHP, Ruby, Kotlin, Swift and more — preserving logic, idioms and readability.

Open Code Converter →

AI Code Explainer

Code

Paste any snippet and get a clear, senior-engineer-style walkthrough — purpose, step-by-step logic, complexity, and edge cases.

Open Code Explainer →

AI Code Debugger

Code

Paste buggy code (plus the error/stack trace if you have one) and Gemini will list every bug, explain the root cause, and return a corrected version.

Open Code Debugger →

AI Unit Test Generator

Testing

Generate comprehensive unit tests (happy paths, edge cases and errors) in the framework idiomatic to your language — Jest, pytest, JUnit, Go testing and more.

Open Unit Test Generator →

AI README Generator

Docs

Describe your project (name, stack, features, scripts) and get a complete GitHub-ready README with badges, TOC, installation, usage, and contributing sections.

Open README Generator →

AI SQL Query Generator

Database

Provide your schema (or describe your tables) plus a natural-language question, and Gemini will produce the SQL query with an explanation.

Open SQL Generator →

Comparison

Why not just use a generic chatbot?

Feature

DevToolAI

Generic AI Chat

Sign-up required

Yes

Task-specific prompts

Yes — 6 tuned prompts

No — generic assistant

Streaming answers

Yes

Code stored on servers

Sometimes

Price

Free

Subscription

Structured output (fixed sections)

Yes

FAQ

Frequently asked questions

Are these AI tools really free?▾

Yes — every AI tool on DevToolAI is 100% free with no sign-up, no credit card and no usage caps for typical developer workflows.

Which AI model powers the tools?▾

All six tools are powered by Google Gemini (currently gemini-flash-latest). Each tool uses a task-specific system prompt tuned for its job.

Is my code stored on your servers?▾

No. The code you paste is sent to Gemini only for the current request and is never persisted. We keep anonymous metadata (tool name, latency, input length) for analytics.

Can I use the output commercially?▾

Yes — you own everything the tools generate. Review generated code before shipping it, just as you would code from any other source.

Do the AI tools work offline?▾

No, they require an internet connection since they call the Gemini API. However our other developer tools (JSON, Base64, JWT, UUID, Hash) work 100% client-side.

Which programming languages are supported?▾

All mainstream languages: JavaScript, TypeScript, Python, Java, C#, C++, Go, Rust, PHP, Ruby, Kotlin, Swift, Scala, Dart, R, and more.

Explore all tools

One AI toolkit for the whole dev loop.

Convert. Explain. Debug. Test. Document. Query. All from one page.

Code Converter Code Explainer Debugger SQL