CLEAN DATA 100× FASTER
An industrial-strength regex utility to sanitize logs, extract emails, and reformat datasets. Process thousands of lines instantly, 100% in-browser.
What can you do?
Batch Regex Tool is designed for heavy-duty data cleaning. With 17+ built-in presets, you can mask PII (Personally Identifiable Information), extract lists of emails or URLs, and convert inconsistent date formats across massive log files in a single click.
Privacy Strength
Privacy is our core feature. Your sensitive log files and customer data never leave your local machine. All regex operations occur within your browser's isolated memory space, ensuring 100% compliance with corporate security and GDPR data handling policies.
HOW TO USE
01
INPUT: Paste your raw text or logs into the input panel.
02
PRESET: Select one or more patterns from the sidebar.
03
DIFF: Switch to Diff view to see exactly what changed.
04
COPY: Grab your cleaned data or download it as .txt.
FAQ
Can I chain patterns?
Yes. Selecting multiple presets applies them in sequence, allowing for complex multi-stage data cleaning.
Is there a line limit?
We handle up to 100,000 lines comfortably. Performance depends on your device's RAM and CPU.
What does Pro offer?
Pro adds the ability to save your own regex patterns, bulk process multiple files at once, and export to CSV/Excel formats.
Try Sample Data
Click the 📋 Sample Data button in the toolbar below to load a mix of log entries, emails, and inconsistent dates.
Use it to test our presets like "PII Scrubber" or "Date Formatter" in real-time.