ULID Generator可以处理什么？
ULID Generator 用于在浏览器中生成结果，并清楚显示处理结果和限制。 已核对的功能： Cryptographic random bits, Sortable identifier output, Bulk generation, Timestamp inspection.
ULID favors sortable identifiers
Choose ULID when lexicographic sorting by approximate creation time is useful. Choose UUID v4 for a widely supported opaque random identifier, or a database-native sequence when centralized ordering is acceptable.
如何使用？
- Choose a count from 1 to 100 and select Generate.
- Copy the 26-character Crockford Base32 values in the order produced.
- Paste any ULID into Inspect ULID to validate it and read its embedded millisecond timestamp.
实际输入输出示例
Inspect the canonical ULID example
输入
01ARZ3NDEKTSV4RRFFQ69G5FAV输出
Status: Valid
Timestamp: 2016-07-30T23:54:10.259Z
Random bits: 80The first ten characters encode a 48-bit Unix-millisecond timestamp; the remaining sixteen encode 80 random bits.
常见错误与修复方法
| 现象 | 可能原因 | 修复方法 |
|---|---|---|
| A 26-character value is marked invalid. | It contains excluded Crockford characters such as I, L, O, or U, or its first character would overflow 128 bits. | Use the ULID alphabet and require the first character to be 0 through 7. |
| Generated values reveal when records were created. | Time ordering is an intentional ULID property. | Choose UUID v4 when exposing approximate creation time is undesirable. |
Important behavior of ULID Generator
该工具的实际边界： Time ordering reveals approximate creation time; choose UUID v4 when that disclosure is unwanted.
标准与实现参考
- ULID specification (opens in a new tab)Defines the 128-bit layout, Crockford Base32 encoding, timestamp, and randomness fields.
- MDN — Crypto.getRandomValues() (opens in a new tab)Documents the cryptographic random-byte source used by the generator.
关于ULID Generator的常见问题
Does the ULID Generator upload my input?
No. Processing runs in the current browser tab, and the page does not send tool input to a KitLumi processing endpoint.
What input does the ULID Generator accept?
It accepts a requested count from 1 to 100 or a ULID to inspect. The workspace checks the input and reports malformed or unsupported values before it produces a result.
What does the ULID Generator produce?
It produces Crockford Base32 ULIDs and decoded creation timestamps. Copy and download controls appear when the output format supports them.
What limitation should I know?
Time ordering reveals approximate creation time; choose UUID v4 when that disclosure is unwanted.
更新记录
本次实质更新： ULID Generator: Added Cryptographic random bits, Sortable identifier output, Bulk generation, Timestamp inspection, responsive controls, explicit runtime disclosure, and task-specific examples and limitations.