Encoding & crypto
Hash generator
Compute SHA-256, SHA-384, or SHA-512 digests of UTF-8 text in hex.
Cryptographic hashes fingerprint data: cache keys, integrity checks, and artifact verification. Paste UTF-8 text and pick SHA-2 family output via the Web Crypto API—nothing leaves the tab. For passwords, use dedicated slow hashes (bcrypt, Argon2), not raw SHA in apps.
Similar tools
Quick links to related utilities—same workflow, different input or output.
- Encoding & cryptoJWT parserDecode JWT header and payload (Base64URL JSON)—signatures are not verified.Open
- Encoding & cryptoUUID generatorGenerate random UUID version 4 identifiers for databases and tests.Open
- Encoding & cryptoRandom string generatorCreate random strings from alphanumeric or custom character sets for test data.Open
FAQs
Why no MD5?›
MD5 is legacy; SHA-256+ is preferred for integrity. Add a library locally if you must reproduce legacy systems.
Is this suitable for passwords?›
No—use purpose-built password hashes with salting and tuning parameters on the server.
Hex vs Base64 output?›
This tool outputs lowercase hex for easy diffing; convert externally if you need Base64 digests.
General
Do these tools send my data to Exemplar’s servers?›
By default, conversion and formatting run entirely in your browser. Nothing is uploaded to Exemplar for normal paste-and-transform workflows. Tools that deliberately open an external service (for example, a third-party speed test) are called out on the page.
Do I need an account or install anything?›
No account is required. Everything runs in the browser—there is nothing to install for these utilities. They complement the Exemplar platform but work standalone.
Are these utilities open-source or the same as other sites?›
These pages are built for Exemplar’s audience (developers working with APIs, config, and ops data). Behavior may differ slightly from other online tools; always verify critical output in your own environment.
Are there size or performance limits?›
Very large inputs can slow down or crash the tab—especially for images, huge JSON, or multi‑MB HAR files. For production-scale data, prefer local CLI tools, streaming parsers, or your own pipelines.
Can I use output in production?›
Yes, when you have validated it. Parsers and formatters here aim to be helpful for everyday tasks but are not a substitute for tests, schema validation, or security review where it matters.
Where can I read more about privacy?›
See our Privacy policy at /privacy for how exemplar.dev handles site analytics and general data practices.