Last updated: March 2026
Frequently Asked Questions
Do these developer tools work offline?
All of our developer tools run entirely in your browser using JavaScript. Once the page has loaded, most tools will continue to work even if you lose your internet connection. Your data never leaves your device, making them safe to use with sensitive code and credentials.
Can I use these tools with production data?
Yes. Since everything runs client-side in your browser, no data is ever sent to a server. This makes our tools safe for production API keys, tokens, and sensitive JSON payloads. You can verify this by checking the Network tab in your browser's developer tools.
How does the JSON formatter handle large files?
The JSON formatter is optimized to handle files up to several megabytes in size. It uses efficient parsing algorithms and virtual rendering for the tree view, so even deeply nested JSON with thousands of nodes remains responsive. For extremely large files (50MB+), consider using a desktop tool.
What regex flavors does the regex tester support?
The regex tester uses JavaScript's built-in RegExp engine, which supports all modern regex features including lookbehind assertions, named capture groups, Unicode property escapes, and the dotAll flag. This covers the vast majority of use cases for web development, data validation, and text processing.
Are the UUID v7 values compliant with the RFC 9562 standard?
Yes. Our UUID generator produces RFC 9562-compliant UUIDs for all supported versions. UUID v7 values are time-ordered, using a Unix timestamp in the most significant bits, making them ideal for database primary keys where sort order matters.