A code editor with 38 operations built in — format, convert, encode, hash, generate, and 8 AI actions. Chain them, undo anything.
Dev Studio puts the developer toolbox in one editor: paste code once and apply operations in sequence instead of a round trip per tool. Thirty of them need no server — format and validate JSON, YAML and SQL, beautify or minify, convert JSON ↔ YAML ↔ XML ↔ CSV ↔ TypeScript, Base64, URL and HTML entities, decode a JWT, hash or HMAC, bcrypt, and generate UUIDs, passwords, .gitignore files, cron expressions, QR codes and meta tags. Syntax highlighting picks itself from what you paste, every step is undoable, and Compare shows exactly what any step did to the file — including telling you when a change was formatting only. The 8 AI actions — explain, debug, convert, refactor, comment, write tests, generate and regex — are the only ones that send anything anywhere, they always open in a review before touching your file, and signing in gives you 2 free runs.
Upload your file using the tool above.
Adjust any settings to your preference.
Click the process button and wait for results.
Download your output using the download button.
Be careful. Code sent for analysis goes to an AI service, so strip credentials, API keys, connection strings and customer data first — and check your employer’s policy, since many prohibit sharing proprietary source with third-party tools. For learning, debugging isolated snippets and generating boilerplate, it is well suited.
Review it as you would a pull request from someone unfamiliar with your codebase. It is generally sound on common patterns and idioms, but it can invent library functions that do not exist, use outdated APIs, or miss edge cases and security considerations specific to your context. Always run it before trusting it.
Explain and Debug tend to earn their keep most — pasting an unfamiliar function or a cryptic stack trace and getting a plain-English breakdown saves real time. Convert is handy for porting between languages, and Test is good for generating a first set of cases you then extend by hand.
No — 30 of the 38 operations are ordinary code running in your browser and cost nothing: formatting, minifying, converting between JSON, YAML, XML and CSV, Base64 and URL encoding, hashing, bcrypt, and the generators. Only the 8 AI actions spend a run, each one shows its cost on the button before you press it, and anything over ten runs asks first.
Yes. Every tool in the Developer category still has its own page and works exactly as before. The studio exists for the times you would otherwise use three of them in a row — paste once, chain the steps, and copy the result at the end.
Dev Studio is free to try — create an account and you get 2 AI runs on us. The account is what lets us give AI away for free without it being abused, since every run costs us real money to process. After your free runs you can buy a one-time credit pack that never expires, or go Pro for 100 runs a month. Every other tool on the site stays completely free and needs no account at all.
Dev Studio sends your file over an encrypted connection to the AI service that runs the model. We keep no copy, and it is never used to train AI models, though an AI service may hold a request for a limited time solely to detect abuse. If a file is confidential, use one of our in-browser tools instead, which never upload anything.
Thirty seconds of your opinion is what decides the next thing we build.
Paste code once, then format, convert, encode, hash and generate — chained, with undo, and nothing to upload. The same tools you already use here, without the round trip.