Developer Utilities
UUID, JWT, regex, hashes, passwords, and code helpers
7 live utilities · runs in your browser
Showing 7 live utilities
About Developer Utilities
Developer Utilities collects browser-side helpers common in day-to-day engineering: identifiers and secrets, token inspection, pattern testing, hashing, and light code cleanup. Live tools include UUID Generator, Password Generator, JWT Decoder, Regex Tester, Hash Generator, Code Minifier, and Code Beautifier.
Aimed at developers and technical QA who want a quick, local utility without installing another CLI for a five-minute task.
When to use which tool
- UUID Generator — need unique IDs (for example v4) for fixtures, keys, or test data.
- Password Generator — need a random password or passphrase with controllable length and character sets for accounts or secrets you will store yourself.
- JWT Decoder — inspect header/payload claims of a JWT; it decodes and displays, it does not verify signatures against your keys as a full auth library would.
- Regex Tester — try a pattern against sample text and inspect matches/groups while writing validation or search rules.
- Hash Generator — compute digests (such as SHA family options the tool exposes) for checksums or comparing content — not a password vault.
- Code Minifier — remove unnecessary whitespace/comments for supported languages when you need a smaller snippet for transfer or embedding.
- Code Beautifier — re-indent and format supported languages for readability (the inverse job of minifying).
- JSON pretty-print alone? Prefer JSON Formatter under Text Tools. JSON↔CSV? Use Converters.
Common use cases
- Generate a handful of UUIDs for seed data while prototyping an API.
- Create a strong password locally before storing it in your password manager.
- Paste a JWT from staging logs to read expiry and subject claims during debugging.
- Iterate on a regex for form validation with live match highlighting.
- Hash a string to compare against a documented checksum.
- Beautify a messy SQL or JS snippet before a code review; minify when embedding a small asset.
Privacy & processing
These utilities process input in your browser. ToolsArk does not upload your passwords, JWTs, source snippets, or hash inputs to a server for the live developer tools.
That still means you should avoid pasting production secrets into any browser tool on a shared machine. Closing the tab clears page memory; downloads and clipboard contents are under your control.
Limitations
- JWT Decoder is for inspection — treat signature verification and key management as separate, application-specific steps.
- Minifier and Beautifier support a defined language set (see each tool); they are not full IDEs or bundlers.
- Hashing here is for digests you request — it is not encryption or secure secret storage.
- Browser memory and paste size still apply; enormous files may belong in local CLI tooling instead.
Tips
- Beautify before minifying when you need to confirm logic, then minify a known-good copy.
- Pair Regex Tester with sample strings from production-like data, not only happy-path examples.
- Text Tools — JSON, Base64, URL encoding
- Converters — JSON ↔ CSV
Related utilities
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