生成工具
ULID 和 NanoID 生成器
Sortable ULIDs and tiny NanoIDs — generated client-side.
Sortable, timestamp-prefixed identifiers.
ULIDs sort lexicographically by creation time — handy for time-ordered keys.
编辑注
Understanding · UUIDs, but for the database we actually use.
本深度章节目前仅有英文版本。上方的转换工具支持您的语言;长篇说明文章尚未翻译。
常见问题
Quick answers.
›What is the difference between ULID and NanoID?
ULIDs include a timestamp for chronological sorting, whereas NanoIDs are purely random. ULID has a fixed format, while NanoID allows for custom lengths and character sets.
›Are these identifiers safe to use for database keys?
Yes. ULIDs are particularly useful as primary keys because their chronological ordering helps maintain database index performance. NanoIDs are safe for public URLs where brevity is preferred.
›Is any data sent to your servers?
No. Generation occurs entirely within your browser using the `crypto.getRandomValues` API. No identifier generated here is ever transmitted or logged.
›Can I customise the NanoID output?
Yes. You can adjust the length and the alphabet to remove ambiguous characters like `1`, `l`, `0`, or `O` depending on your requirements.
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