生成
ULID & NanoID Generator
Sortable ULIDs and tiny NanoIDs — generated client-side.
Sortable, timestamp-prefixed identifiers.
ULIDs sort lexicographically by creation time — handy for time-ordered keys.
編集者注
Understanding · UUIDs, but for the database we actually use.
この詳細な解説章は現在、英語版のみで提供されています。上の変換ツールはあなたの言語で動作しますが、長文の解説記事はまだ翻訳されていません。
よくある質問
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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