Critical Angle Optics
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100 calls/day, no card, no spam. Built by one person, in public.
About Crit Angle
Crit Angle solves a specific problem that comes up daily for anyone dealing with this task: doing it once, fast, without an account. 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. 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 Crit Angle
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.
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 Crit Angle
- Will Crit Angle change my original file?
- Never. Crit Angle only reads your input file and produces a new output file.
- What browsers does Crit Angle support?
- Every modern browser released in the last three years: Chrome, Firefox, Safari, Edge, Brave, Opera.
- Can I use Crit Angle commercially?
- Yes. The output of Crit Angle belongs entirely to you, with no licensing restrictions.
- Are my files uploaded to a server when I use Crit Angle?
- Crit Angle processes everything in your browser using local APIs. Your files never leave your device.
- Does Crit Angle work on mobile?
- Yes, Crit Angle is fully responsive and tested on iOS Safari and Android Chrome.
