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

About Antenna Len

Most online tools for this task bury what you need behind ads and forms. Antenna Len takes the opposite approach: load the page, do the job, leave. 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. It is one of about a hundred utility tools that share the same philosophy: do one thing, do it well, get out of your way.

When you'd reach for Antenna Len

  • 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.

  • 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 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 Antenna Len

Can I use Antenna Len commercially?
Yes. The output of Antenna Len belongs entirely to you, with no licensing restrictions.
Do I need to create an account to use Antenna Len?
No. Antenna Len works without any signup. We only ask for an email if you decide to subscribe to a paid plan.
Are my files uploaded to a server when I use Antenna Len?
Antenna Len processes everything in your browser using local APIs. Your files never leave your device.
Will Antenna Len change my original file?
Never. Antenna Len only reads your input file and produces a new output file.
What browsers does Antenna Len support?
Every modern browser released in the last three years: Chrome, Firefox, Safari, Edge, Brave, Opera.

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