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About Runway Len
Runway Len is a free, browser-based utility designed to make this task as quick and frictionless as possible. Processing runs locally in your browser using modern Web APIs. Nothing is uploaded, nothing is logged, and there is no quota to worry about for casual use. 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 Runway 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 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.
Frequently asked about Runway Len
- Will Runway Len change my original file?
- Never. Runway Len only reads your input file and produces a new output file.
- What browsers does Runway Len support?
- Every modern browser released in the last three years: Chrome, Firefox, Safari, Edge, Brave, Opera.
- Does Runway Len work on mobile?
- Yes, Runway Len is fully responsive and tested on iOS Safari and Android Chrome.
- Is Runway Len really free?
- Yes — Runway Len is free for unlimited personal use, with no account required and no watermark on the output.
- Are my files uploaded to a server when I use Runway Len?
- Runway Len processes everything in your browser using local APIs. Your files never leave your device.