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100 calls/day, no card, no spam. Built by one person, in public.

About Energy Star

When you need this task done in seconds, Energy Star delivers a clean, focused interface without the friction of a generic tool. Built to be the kind of tool you bookmark and use weekly: no surprises between visits, no degraded free tier, and a UI that gets out of the way. Like everything else in the utility collection, it is free, ad-light, and works on mobile as well as desktop.

When you'd reach for Energy Star

  • 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 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 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.

Frequently asked about Energy Star

Will Energy Star change my original file?
Never. Energy Star only reads your input file and produces a new output file.
Does Energy Star work on mobile?
Yes, Energy Star is fully responsive and tested on iOS Safari and Android Chrome.
Do I need to create an account to use Energy Star?
No. Energy Star works without any signup. We only ask for an email if you decide to subscribe to a paid plan.
Is Energy Star really free?
Yes — Energy Star is free for unlimited personal use, with no account required and no watermark on the output.
What browsers does Energy Star support?
Every modern browser released in the last three years: Chrome, Firefox, Safari, Edge, Brave, Opera.