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UUID Generator

Generate random UUIDs (v4) or time-ordered UUIDs (v7), one or many at a time.

Generated with the browser’s crypto API — nothing is sent to a server.
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UUID Generator — frequently asked questions
v4 or v7?+
v4 is fully random. v7 embeds a timestamp so the IDs sort chronologically — better as database keys.
Are these guaranteed unique?+
v4 has ~5.3×10^36 possibilities, so collisions are effectively impossible in practice.
Adakah anda memuat naik fail saya ke pelayan?+
Tidak — setiap alat di sini memproses fail anda sepenuhnya pada peranti anda, dan tiada apa dimuat naik ke pelayan. Satu-satunya pengecualian ialah alat AI, yang menghantar teks yang diekstrak (bukan fail) ke Claude untuk melakukan kerjanya.
Adakah terdapat had saiz fail?+
Kami tidak mengenakan had buatan, tetapi kerana pemprosesan berlaku dalam pelayar anda, fail yang sangat besar (500+ MB atau 1,000+ muka surat) dihadkan oleh memori peranti anda, bukan oleh kami.