Self-healing code converter

Convert code between languages. Bugs fix themselves.

Paste your code, pick a target language, get a clean conversion. When something breaks, an AI agent repairs and ships the fix.

Start my first conversion See how repairs work

Takes you to sign-up.

JavaScript → TypeScript
checkout.js 
function total(items, tax) {
  let sum = 0;
  for (const i of items) {
    sum += i.price * i.qty;
  }
  return sum * (1 + tax);
}
interface Item { price: number; qty: number }

function total(
  items: Item[], tax: number
): number {
  // ...typed, same behavior
}
1 failure found · repaired · fix shipped auto-repaired

How it works

One job, and a loop that repairs it.

Most converters stay broken until someone files a ticket. Transmute closes that loop on its own.

  1. input

    Paste and pick

    Drop in a file, choose the target language or framework. JavaScript to TypeScript, Python 2 to 3, Java to Kotlin.

  2. output

    Get a clean conversion

    Source and output sit side by side so you can read the diff before you copy anything into your repo.

  3. detect

    A failure is logged

    If a conversion breaks, the error is captured with the exact input that triggered it. No need to write a bug report.

  4. repair

    The agent repairs it

    An AI agent diagnoses the bug, writes the fix, and ships it to the converter. Your file is re-run and marked auto-repaired.

  5. support

    Questions get answers

    Billing and how-do-I questions go to the same agent, in a support thread inside the app.

Why a single-purpose tool

The old way of converting code, and this one.

Scope
A toolkit of dozens of tools, most you never open.
One converter, built for migrations.
When it breaks
It stays broken until you report it and someone gets to it.
The failure is logged, an agent writes the fix, and it ships.
Getting help
A ticket queue and a wait.
An AI agent answers in-app, billing included.
Reading the result
Output in a box, no context.
Source and output side by side, with repairs flagged.
Pricing
Credits and tiers to decode.
A plan and a usage meter on one screen.
history
checkout.js converted
billing_report.py auto-repaired
OrderService.java converted
scheduler.py repairing

Conversion history

Every file, with what happened to it.

Each conversion keeps its languages, size, and status. Files the agent repaired are flagged, so you know which output came from a fix.

PlanUsage this month

Plan and usage live on one screen. No credit tables to decode.

Account and billing

Predictable by design.

Your plan, your usage, your invoices, and a support thread where the agent handles billing questions. Create an account to see it.

FAQ

Questions developers ask first.

What can Transmute convert?+

It focuses on migrations developers actually do: JavaScript to TypeScript, Python 2 to 3, and Java to Kotlin. It does one job instead of offering a long list of tools.

What happens when a conversion fails?+

The failure is logged with the input that caused it. An AI agent diagnoses the bug, writes a fix, and ships it, then your file is re-run and marked auto-repaired.

Who answers support questions?+

The same AI agent. Questions about conversions and billing are handled in a support thread inside the app.

Do I still need to review the output?+

Yes. Source and output are shown side by side so you can read the result before it goes into your codebase.

Who is it for?+

Working developers and small engineering teams migrating legacy code who want one dependable utility.

A converter that keeps getting more reliable.

Make an account and run your first file through.

Create my account