JSON formatter, Base64, word counter, case converter, lorem ipsum, regex tester, diff checker & markdown preview — all in one page.
Prefer a page with just this tool? Try the standalone Word Counter.
Common flags: g matches every occurrence instead of stopping at the first, i ignores upper/lower case, m makes ^ and $ match the start/end of each line instead of the whole string, s lets . also match newlines.
Prefer a page with just this tool? Try the standalone Regex Tester.
This page bundles eight small utilities that come up constantly in everyday development work: a JSON formatter to pretty-print and validate API responses, Base64 encoding/decoding for embedding binary data in text-based formats, a word and character counter for meeting content-length limits, a case converter for switching text between camelCase, snake_case, kebab-case and more, a lorem ipsum generator for mockups and layout testing, a regex tester with live match highlighting and capture groups, a line-based diff checker for comparing two versions of text, and a lightweight Markdown previewer.
Every one of these runs as plain JavaScript inside your browser tab — nothing you type or paste is ever transmitted to a server. That makes it safe to use with sensitive text like API keys, internal config, or unpublished content.