| Flag | Name | Description |
|---|---|---|
| g | Global | Match all occurrences, not just the first |
| i | Case Insensitive | Ignore case when matching |
| m | Multiline | ^ and $ match line boundaries |
| s | Dotall | Dot matches newlines too |
| u | Unicode | Enable full Unicode matching |
| y | Sticky | Match from lastIndex only |
| d | HasIndices | Generate indices for matches |
7 of 7 entries
Get a free API key + new tools as they ship
100 calls/day, no card, no spam. Built by one person, in public.
About Regex Flags
When you need developer and design work done in seconds, Regex Flags delivers a clean, focused interface without the friction of a generic tool. 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. It is one of about a hundred developer tools that share the same philosophy: do one thing, do it well, get out of your way.
When you'd reach for Regex Flags
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.
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 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 Regex Flags
- Will Regex Flags change my original file?
- Never. Regex Flags only reads your input file and produces a new output file.
- What browsers does Regex Flags support?
- Every modern browser released in the last three years: Chrome, Firefox, Safari, Edge, Brave, Opera.
- Are my files uploaded to a server when I use Regex Flags?
- Regex Flags processes everything in your browser using local APIs. Your files never leave your device.
- Do I need to create an account to use Regex Flags?
- No. Regex Flags works without any signup. We only ask for an email if you decide to subscribe to a paid plan.
- Is Regex Flags really free?
- Yes — Regex Flags is free for unlimited personal use, with no account required and no watermark on the output.