FastAPI

About FastAPI

FastAPI is a free, browser-based utility designed to make developer and design work as quick and frictionless as possible. The goal was to keep the path from "open the page" to "get the result" as short as possible. No mandatory account, no cookie wall, no upsell at every step. Like everything else in the developer collection, it is free, ad-light, and works on mobile as well as desktop.

When you'd reach for FastAPI

• You're cleaning up a folder of files that accumulated over a project and need to standardize them.

  Designers, writers, and developers wrapping up deliverables.

  Drop each file in, copy the output, move on.

• You're hitting the daily limit of a paid SaaS and need a backup option for a single quick job.

  Marketers and ops people whose primary tool is metered.

  Stay productive without burning credits.

• You're on a public or shared machine and don't want to leave traces of what you're working on.

  Travelers, contractors, anyone working from a friend's computer.

  Nothing is uploaded, nothing persists if you're not signed in.

• You need to handle a one-off task right before a meeting and don't have time to install anything.

  Anyone working remotely on a borrowed or restricted machine.

  Open the page, get the result, paste it into your doc — under a minute.

Frequently asked about FastAPI

Is FastAPI really free?

Yes — FastAPI is free for unlimited personal use, with no account required and no watermark on the output.

Can I use FastAPI commercially?

Yes. The output of FastAPI belongs entirely to you, with no licensing restrictions.

Are my files uploaded to a server when I use FastAPI?

FastAPI processes everything in your browser using local APIs. Your files never leave your device.

Does FastAPI work on mobile?

Yes, FastAPI is fully responsive and tested on iOS Safari and Android Chrome.

Do I need to create an account to use FastAPI?

No. FastAPI works without any signup. We only ask for an email if you decide to subscribe to a paid plan.