Online developer tools. Works in browser — no sign-up, no ads.
Markdown Editor
Live preview, syntax highlighting, toolbar and autosave.
NEWJSON Formatter
Format, minify, validate and explore JSON with tree view.
NEWLog Viewer
View and filter structured logs. Supports JSON and NDJSON.
Base64
Encode and decode Base64 strings and files.
URL Encoder
Encode and decode URLs and query parameters.
JWT Decoder
Decode and inspect JWT tokens without a server.
Regex Tester
Test regular expressions with live match highlighting.
UUID Generator
Generate v4 UUIDs one by one or in bulk.
Hash Generator
Calculate MD5, SHA-1, SHA-256 and other hashes.
Color Picker
Convert between HEX, RGB, HSL color formats.
Unix Timestamp
Convert Unix timestamps to human-readable dates and back.