01
Generate UUIDs in the exact format a system expects
Choose count, casing, hyphens, and braces, then see the UUID set reformat live without minting new values for every style change.
UUID / ULIDDeveloper & Data
Generate IDs in the right format, then inspect IDs you already have.
UUID / ULID generates up to 100 identifiers, reformats UUID casing, hyphens, and braces live, and creates lexicographically sortable ULIDs with embedded time. Paste an existing value to read its UUID version and variant or recover a ULID creation timestamp.
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What it does
Generate, format, and inspect UUIDs and time-sortable ULIDs in one local workspace.
Generate one to 100 UUIDs or ULIDs at once.
Control UUID casing, hyphens, and braces.
Reformat existing UUID output without minting new values.
Create sortable ULIDs with embedded timestamps.
Inspect a UUID version and variant or a ULID creation time.
Generate, format, inspect
Use identifiers that fit the system and explain the values already in it.
Formatted UUIDs, sortable ULIDs, and timestamp or version inspection form one complete identifier workflow.
02
Create sortable ULIDs with embedded time
Switch to ULID for compact 26-character identifiers that sort lexicographically and retain their creation timestamp.
03
Inspect an existing UUID or ULID
Paste an identifier to read its UUID version and variant or recover the creation time embedded in a ULID.
Why it belongs
Why UUID / ULID earns a place in the toolbox.
The practical details that make this job faster, clearer, or safer than doing it by hand.
Formatting without identifier churn
Changing UUID presentation updates the current values instead of replacing them unexpectedly.
ULIDs carry useful order
The 26-character format sorts lexicographically and exposes when the identifier was created.
Generation and diagnosis together
The Decode field handles identifiers copied from logs, databases, or API responses.
How to use it
From opening the tool to saving the result.
- 01
Choose UUID or ULID.
- 02
Set count and UUID formatting when applicable.
- 03
Copy the generated set.
- 04
Paste any existing ID into Decode for inspection.
Questions
Before you try UUID / ULID
Can ULIDs show time information?
Yes. ULIDs include timestamp information that the tool can decode.
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