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LOCAL-FIRST · FREE · NO API KEY

AI Code Language Converter

Move code between languages, keep your source intact, and review the differences. Use fast, conservative rules or an optional AI model running on your device.

✦ On-device AI option⌘ Python · JS · TS☑ Review-first◇ No account
AI not loaded · rules available
01 / ORIGINAL

Source code

0 lines
Your source stays unchanged unless you edit or explicitly replace it.
02 / CONVERTED

Converted code

No output
AI output is unverified. Always build, test and review before use.
Ready to convert
Recent conversions appear here; nothing is stored after closing this tab.
03 / REVIEW

Conversion notes

Not converted

Convert source code to see coverage and review guidance here.

BUILT FOR CODE REVIEW

Convert with a transparent review workflow

01

Add your code

Paste or open UTF-8 code. Nothing is executed or sent to PixelOkay servers.

02

Choose your engine

Rule mode supports conservative Python ↔ JavaScript and JavaScript ↔ TypeScript subsets. Local AI supports more target languages on compatible WebGPU devices.

03

Review & export

Read warnings, inspect the text comparison, edit the result, and download code and a review report.

What “AI” means here

Local AI uses the free open-weight Qwen2.5-Coder model through WebLLM in your browser, if supported. The model and runtime download from external public hosts when first requested; processing is intended to stay on-device. Large downloads, GPU memory, and WebGPU are required. No paid API key is used. If this runtime fails, no AI output is fabricated.

Offline rules do not use AI. They handle a restricted syntax subset, fail clearly on unsupported constructs, and may not preserve all language-specific behavior. JavaScript to TypeScript can retain valid JavaScript syntax without adding inferred types. This tool does not compile, execute or test your code and cannot guarantee semantic equivalence, dependency compatibility or security. Never paste secrets into code conversion tools, and inspect exported output carefully.

Using AI Code Language Converter

Choose source/target languages and an engine, convert supported input and review the differences. Keep the original source and validate generated code with your own tools before using it. Save the project/report when needed.

Rules are a bounded subset, not a compiler or semantic-preservation guarantee. Ambiguous constructs can be rejected. Optional WebLLM needs WebGPU and large external assets; generated code and review hints require independent validation. The tool never executes source/output. History is in memory, imported output has no conversion proof, and projects/reports can contain private code. Browser/model compatibility remains a release requirement.

References: WebLLM

Convert only the supported code subset and review every change

Choose a source/target language pair for the conservative local rules, or opt into WebLLM conversion where WebGPU and model setup are available. Inspect the differences, preserve the original and validate generated code with your own tools before use.

Example workflow

  1. Start with a short function using constructs listed as supported for the selected language pair.
  2. Convert with rules or the optional model path, inspect each changed line and resolve rejected or ambiguous constructs manually.
  3. Export the code or project/report only after review, then run appropriate checks in your normal development environment.

Authored example: Convert a small arithmetic helper between JavaScript and TypeScript. Review types, null behavior and imports in the diff, then validate the result in the intended project instead of assuming the conversion preserves semantics.

Limits and model handling: Rule-based conversion covers a bounded subset and is not a compiler. Optional WebLLM requires WebGPU and downloads substantial external runtime/model assets. Neither the source nor output is executed for validation. Imported output has no conversion proof, conversion history is in memory, and projects/reports can contain private code.

AI Code Language Converter questions

Does a successful conversion guarantee equivalent behavior?

No. Supported rules are conservative and the optional model can make mistakes. Review the diff and validate the result with your own tests and tools.

Will the converter execute my code?

No. It converts and displays source but does not execute the input or output.

Related tools

LOCAL AI SETUP

Set up AI on this device

First, a model needs to be loaded on your device

Code conversion AI runs on your device. The first setup may download hundreds of megabytes of model files. Later visits can reuse cached files but still need to load the model in memory.

  1. 1. Check device
  2. 2. Download / cache
  3. 3. Set up converter
  4. 4. Convert code
Select a compatible model for local code migration.

Device & model resources

Measurements may be approximate
Device RAM / model memoryChecking device information…

Live system RAM, model RAM and GPU memory are not reliably exposed in browsers.

Browser website storageChecking storage…

Site-wide estimate; includes other PixelOkay tools and is not RAM.

ONE ACTION · ALL RECOGNIZED AI MODEL DOWNLOADS

Free AI model storage across PixelOkay

Scan this website origin for WebLLM and Transformers.js model caches, plus recognizable model files in other cache buckets. This includes caches from other PixelOkay tools , not only this converter. No site data or browser databases are cleared automatically.

Inspect the origin to see which model caches are safely identifiable.

Browser-native models and unknown IndexedDB/OPFS or private runtime caches may remain. Unknown application/user storage will not be deleted. Other running tools might redownload caches; close their tabs first.

Having trouble downloading or loading AI?

Old or incomplete AI model downloads may be using your browser's storage. First refresh the storage meter or try a smaller model. If setup still fails, inspect and remove recognized AI model caches with confirmation, then download again.

Only model caches are targeted. Other PixelOkay tools may need to redownload their models. Never clear all website data without exporting important codes and projects first.

Select Check compatibility to inspect WebGPU support.
Currently loadedNoneNo active inference session
Runtime: WebLLM 0.2.87 · Code generated locally. The AI output is not verified.
CROSS-TOOL MODEL CACHE CLEANUP

Delete all recognized AI model downloads?

Deleting these caches will cause other PixelOkay tools to download their models again. Loaded AI sessions in other tabs may be disrupted. Unidentified model caches and browser-managed models may remain.

Data-loss caution: This action does not intentionally delete saved chats, projects, drafts, localStorage or IndexedDB. Do not clear website data unless you have backed up work; clearing all website data may permanently erase saved work.