Developer tools
10 tools. One tab. Zero signup.
JSON formatting, Base64 encoding, regex testing, UUID generation, hashing, JWT decoding, and more — each one fast, each one running entirely in your browser. Nothing you paste here ever leaves your machine.
100% CLIENT-SIDE — RUNS IN YOUR BROWSER
NO ACCOUNT · NO UPLOADS · NO SERVER PROCESSING
JSON Formatter
Pretty-print, minify, and validate JSON with clear error messages.
OPEN TOOL →Base64 Encode / Decode
Convert text to Base64 and back, with full Unicode support.
OPEN TOOL →Regex Tester
Live match highlighting, capture groups, and flag support.
OPEN TOOL →UUID Generator
Generate up to 100 cryptographically random v4 UUIDs at once.
OPEN TOOL →Hash Generator
Generate SHA-1, SHA-256, SHA-384, and SHA-512 hashes from text.
OPEN TOOL →JWT Decoder
Decode a JSON Web Token's header and payload to plain JSON.
OPEN TOOL →Case Converter
Convert text between UPPER, lower, Title, camelCase, snake_case, and kebab-case.
OPEN TOOL →URL Encode / Decode
Encode or decode URL components and query strings instantly.
OPEN TOOL →Lorem Ipsum Generator
Generate placeholder text by paragraphs, sentences, or words.
OPEN TOOL →Cron Expression Explainer
Translate a cron expression into a plain-English schedule.
OPEN TOOL →TEN TOOLS AND COUNTING
Small utilities. No accounts. No tracking. No nonsense.
Monospace exists so you don't need five tabs open across five different ad-choked utility sites for one-off dev tasks. Every tool here works the same way — open it, use it, done.
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Browser-based
Every tool runs client-side — nothing you paste is sent to a server.
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No signup
Open a tool and use it immediately. No account, ever.
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Fast
No server round-trip slowing down simple tasks.
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Privacy-first
What you paste stays on your machine, period.
Common questions
Does my data leave my device?
No. Every tool on this page runs entirely client-side — what you paste is processed in your browser and never sent to a server.
Do I need an account?
No. There's no signup, login, or account of any kind. Open a tool and start using it.
Is there a file or input-size limit?
Limits come from your browser's memory, not from us — for typical text, JSON, or UUID batches you won't hit them.
Can I use these tools for work?
Yes. Since nothing you paste is uploaded anywhere, these tools are safe to use with internal or sensitive data.