LIVE
Coding utilities for your daily workflow
From JSON beautifying to regex testing, cron building and JWT inspection — every everyday developer utility you need, running privately in your browser.
Every tool below is free, runs instantly in your browser, and never uploads your data.
Format, minify and validate JSON with syntax error details and document stats.
Convert CSV to JSON and JSON to CSV with delimiter and quote support.
Test regular expressions with live match highlighting, groups and flags.
Encode text or files to Base64 with URL-safe and Unicode support.
Decode Base64 strings back to text or files with Unicode support.
Percent-encode URL strings for query parameters and paths.
Decode percent-encoded URLs and query strings instantly.
Generate SHA-1, SHA-256, SHA-384 and SHA-512 hashes from text or files.
Generate RFC 4122 v4 UUIDs in bulk with one-click copy.
Decode JWT headers and payloads locally — no data leaves your browser.
Convert Unix timestamps to human dates and back, in any timezone.
Build cron expressions from presets or custom fields with validation.
Generate lorem ipsum paragraphs, sentences and words for mockups.
Write Markdown and preview rendered HTML side by side.
Convert text to uppercase, lowercase, title, camelCase, snake_case and more.
Turn any title or phrase into a clean URL slug.
Yes — every tool in this category runs 100% in your browser. Paste tokens, JSON payloads and code freely; nothing is ever uploaded.
No. All 16 developer tools are free, instant, and require no signup or API keys.
Yes — all tools are fully responsive and work in any modern browser on desktop, tablet, or phone.