Que fait ULID Generator ?
ULID Generator permet de générer des résultats dans le navigateur et présente clairement le résultat et ses limites. Fonctions vérifiées : 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.
Comment l’utiliser ?
- 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.
Exemple réel d’entrée et de sortie
Inspect the canonical ULID example
Entrée
01ARZ3NDEKTSV4RRFFQ69G5FAVSortie
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.
Erreurs fréquentes et corrections
| Symptôme | Cause probable | Correction |
|---|---|---|
| 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
Limite propre à cet outil : Time ordering reveals approximate creation time; choose UUID v4 when that disclosure is unwanted.
Normes et références d’implémentation
- 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.
ULID Generator — FAQ
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.
Quelles modifications ?
Mise à jour substantielle : ULID Generator: Added Cryptographic random bits, Sortable identifier output, Bulk generation, Timestamp inspection, responsive controls, explicit runtime disclosure, and task-specific examples and limitations.