Why these guides exist
ContainTool is intended to be more than a list of browser utilities. The guides section explains the workflows behind the tools so visitors can understand common edge cases, compare alternatives, and verify results before using them in development or operational work.
JSON formatting guide
Learn how to clean malformed payloads, inspect API responses, and format JSON for debugging, QA, and documentation.
Regex examples guide
Review practical regular expression patterns, testing advice, and maintenance habits for safer pattern work.
Unix timestamp guide
Understand 10-digit versus 13-digit timestamps, timezone confusion, and reliable debugging habits.
Password security guide
See how password generators fit into a broader security workflow that also includes uniqueness, storage, and MFA.
Base64 and URL encoding guide
Understand when Base64 is appropriate, when URL encoding is appropriate, and why mixing them up breaks integrations.
Color format guide
Learn the practical difference between HEX, RGB, and HSL when moving between design tools and frontend code.
QR code best practices
Review scan reliability, size, contrast, and publishing advice before you share a QR code publicly.
UUID usage guide
See where UUID-style identifiers are useful, how format choices matter, and what to verify in other systems.
How to use the documentation
- Read a guide first if you need context or need to teach someone else how a tool should be used.
- Open the paired tool page when you are ready to run a quick conversion or generate output.
- Use the related links in each guide to move between explanations, tool pages, and trust resources such as About, Privacy, Terms, and Contact.