Developer utilities, zero fluff
Hash, Base64, UUID, and timestamps. Real-time. Browser-only. No libraries loaded.
| Algorithm | Hash | |
|---|---|---|
| SHA-1 | — | |
| SHA-256 | — | |
| SHA-384 | — | |
| SHA-512 | — |
crypto.randomUUID()Frequently Asked Questions
How do I generate a SHA-256 hash?
Paste your text in the Hash tab — SHA-256 (and SHA-1, SHA-384, SHA-512) update in real time as you type, with a 150ms debounce. No button needed.
Can I hash a file, not just text?
Yes. Drop any file onto the Hash tab's file drop zone. You'll get SHA-1, SHA-256, SHA-384, and SHA-512 checksums instantly. Files up to 500 MB are supported. Use the compare field to verify a checksum against a known expected value.
Does quickr upload my data?
No. Everything runs in your browser using the Web Crypto API (SubtleCrypto), native Base64, and crypto.randomUUID(). Nothing is sent to any server.
What is UUID v4?
UUID v4 is a randomly generated universally unique identifier — 128 bits of cryptographic randomness, formatted as 32 hex digits with hyphens (e.g. 550e8400-e29b-41d4-a716-446655440000). Generated here using crypto.randomUUID().
How do I convert a Unix timestamp to a date?
Go to the Timestamp tab and paste your Unix timestamp (seconds since Jan 1, 1970 UTC) into the Epoch → Date field. It shows the date in your selected timezone with relative time (e.g. "3 hours ago").