Generate UUID v1/v4 and ULID – plus MD5/SHA checksums for text & files. Bulk mode, export & JSON API included.
UUID v4 is purely random, UUID v1 is time-based (without a real MAC) and ULID is lexicographically sortable (time at the front) and here monotonic per request – generated ULIDs increase if several are created within the same millisecond. The hash toolkit computes MD5, SHA‑1, SHA‑256, SHA‑512 over text (line-by-line) or uploaded files.
We continually develop new online helpers. Visit the overview page.
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