Format JSON, encode Base64 or URLs, hash text, and generate UUIDs and passwords — all on one screen, all client-side. Your input never touches a server.
Output appears here…Everything runs in your browser — your input is never uploaded.
Dev tools, client-side
Paste API keys and secrets without worry: JSON, Base64, URL, hashing, UUIDs and passwords all run in your browser, never on a server.
GhostDev is a set of developer utilities that run entirely in your browser — your input is never sent to a server. Format, validate or minify JSON; encode and decode Base64 and URLs; hash text with SHA-256/1/384/512; generate crypto-random v4 UUIDs; and create strong random passwords. Because everything runs client-side, you can safely paste API keys, tokens, and secrets — unlike the many 'online formatter' tools that transmit whatever you paste to their backend.
Pick a tool
JSON formatter, Base64, URL encode/decode, SHA hash, UUID, or password generator.
Paste or generate
Paste your input or click generate. It's processed instantly in your browser.
Copy the result
Copy the output. Nothing you pasted ever left your machine.
| Feature | GhostX | Typical online formatter tools |
|---|---|---|
| Input sent to a server | Never — client-side | Often POSTed to their backend |
| Safe for secrets / API keys | Yes | Risky — input may be logged |
| Ads on the tool itself | No | Usually |
| Signup | No | Sometimes |
Is my input sent to your server?
No. Every GhostDev tool runs entirely in your browser — there's no upload or API call with your data. You can verify it in DevTools' Network tab.
Is it safe to hash a password or paste an API key here?
Yes. Hashing, encoding, and generation all happen locally on your device, so secrets never leave it — which is exactly why we built these client-side.
Are the UUIDs and passwords cryptographically random?
Yes. They use the browser's crypto.getRandomValues, the same CSPRNG used for security-sensitive randomness.
Can I format and validate large JSON?
Yes. The JSON formatter beautifies, minifies, and validates locally, so even large payloads stay on your machine.
Everything runs in your browser. Your files are never uploaded — for the single-file tools there's no upload endpoint to send them to.
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