Regex Studio

Develop and validate regex patterns with live matching, capture-group inspection, and replacement previews.

Launch tool Request custom workflow →

Quick start

1 Paste sample input text and your regex pattern.
2 Set flags and optional replacement expression.
3 Run match/replace preview and copy or save the result/preset.

Regex Studio

Build and test regex patterns with live preview, groups, and replacement.

Pattern Flags Replacement (optional) Sample text

Ready.

Report: No analysis yet.

Matches

Groups

Replacement preview

Presets and job queue Job queue

Saved presets

Job queue

Recent jobs for this tool in this browser.

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Typical use-cases

Build parsing rules for logs and data cleanup tasks.
Validate extraction patterns before adding them to automation scripts.
Prototype safe redaction and normalization rules.

Feature overview

Live regex matching with index-based match list
Flags control and compile-error feedback
Capture group inspection output
Replacement preview with backreferences
Reusable presets (save, export, import)
Worker-backed processing for larger inputs
Local-only execution in browser

FAQ

Does this support JavaScript regex features?

Yes. It uses the browser RegExp engine and supports standard JS flags and capture groups.

Can I reuse my favorite patterns?

Yes. Presets can be saved, exported, and re-imported locally.

Need this as a custom workflow or plugin?

Share a short requirement and continue to direct inquiry.

Note

Browser compatibility, file size limits, and output quality vary by input and device. Share links include tool settings in the URL only. No files are stored on my server.