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Nano ID is a library for generating random IDs. Likewise UUID, there is a probability of duplicate IDs. However, this probability is extremely small. Meanwhile, a lot of projects generate IDs in small numbers. For those projects, the ID length could be reduced without risk. This calculator aims to help you realize the extent to which the ID length can be reduced. Instead of using the unsafe Math.random(), Nano ID uses the crypto module in Node.js and the Web Crypto API in browsers. These modules use unpredictable hardware random generator. Uniformity, random % alphabet is a popular mistake to make when coding an ID generator. The distribution will not be even; there will be a lower chance for some symbols to appear compared to others. So, it will reduce the number of tries when brute-forcing. Nano ID uses a better algorithm and is tested for uniformity.
Features
- Nano ID uses a bigger alphabet, so a similar number of random bits are packed in just 21 symbols instead of 36
- Nano ID code is 4.5 times less than uuid/v4 package: 108 bytes instead of 483
- Because of memory allocation tricks, Nano ID is 60% faster than UUID
- ID size calculator shows collision probability when adjusting the ID alphabet or size
- nanoid-dictionary with popular alphabets to use with customAlphabet
- nanoid-good to be sure that your ID doesn’t contain any obscene words
Project Samples
