Carnot Efficiency
Get a free API key + new tools as they ship
100 calls/day, no card, no spam. Built by one person, in public.
About Carnot
Carnot is a free, browser-based utility designed to make this task 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. If you find yourself doing this regularly, the rest of the utility suite covers most adjacent tasks with the same approach.
When you'd reach for Carnot
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'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 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.
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.
Frequently asked about Carnot
- Do I need to create an account to use Carnot?
- No. Carnot works without any signup. We only ask for an email if you decide to subscribe to a paid plan.
- Can I use Carnot commercially?
- Yes. The output of Carnot belongs entirely to you, with no licensing restrictions.
- Is Carnot really free?
- Yes — Carnot is free for unlimited personal use, with no account required and no watermark on the output.
- Will Carnot change my original file?
- Never. Carnot only reads your input file and produces a new output file.
- What browsers does Carnot support?
- Every modern browser released in the last three years: Chrome, Firefox, Safari, Edge, Brave, Opera.
