Regex Domain Pattern
Get a free API key + new tools as they ship
100 calls/day, no card, no spam. Built by one person, in public.
About Domain Regex
Working with developer and design work no longer requires installing heavy desktop software — Domain Regex runs entirely in your browser, instantly. Everything happens client-side, which means your files and data never leave your machine. The interface is intentionally minimal so you can focus on the task instead of learning the tool. Like everything else in the developer collection, it is free, ad-light, and works on mobile as well as desktop.
When you'd reach for Domain Regex
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 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 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 Domain Regex
- What browsers does Domain Regex support?
- Every modern browser released in the last three years: Chrome, Firefox, Safari, Edge, Brave, Opera.
- Is Domain Regex really free?
- Yes — Domain Regex is free for unlimited personal use, with no account required and no watermark on the output.
- Do I need to create an account to use Domain Regex?
- No. Domain Regex works without any signup. We only ask for an email if you decide to subscribe to a paid plan.
- Does Domain Regex work on mobile?
- Yes, Domain Regex is fully responsive and tested on iOS Safari and Android Chrome.
- Will Domain Regex change my original file?
- Never. Domain Regex only reads your input file and produces a new output file.
