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Create strong random passwords or passphrases in your browser, with a strength meter and crack-time estimate.

Generate secure UUID v4 identifiers.

Convert HEX colours to RGB and RGBA.

Compare random passwords and passphrases through five practical checks: selection method, generation space, typing, storage and strength estimates.

Compare HEX vs RGB with 5 CSS examples. Convert solid colors, expand shorthand, preserve alpha and use transparent backgrounds with…

Understand UUID vs GUID in 5 practical facts: naming, formats, versions, generation and record consistency. Try our free UUID v4…