Sqids (pronounced squids) is a small library that lets you generate YouTube-like IDs from numbers. It encodes numbers like 127 into strings like yc3, which you can then decode back into the original numbers. Sqids comes in handy when you want to obfuscate numbers (such as sequential numeric IDs) into random-looking strings, to be used in URLs and elsewhere. Sqids features include collision-free generation of unique IDs, encoding and decoding of multiple numbers, eye-safe IDs without common profanity, randomized output, support for all integral types in .NET, blazingly fast performance, meticulous testing for bug-free experience, and support for all .NET languages. Using Sqids is as easy as installing the NuGet package, creating an instance of `SqidsEncoder`, and using the `Encode` and `Decode` methods to generate and retrieve IDs respectively. Customizations can be made to the alphabet, minimum ID length, and blocklist for specific requirements.