maratoolText tools
Compare, analyze, edit, format, and generate text — all running locally in your browser.
About these text tools
This page collects utilities for working with text the way developers and writers actually use it — comparing two versions of a document, formatting structured data so it is readable, testing a regular expression against real input, estimating how long an article will take to read, and generating placeholder text for a layout. These are small jobs that come up constantly, and a fast browser tool is usually the right answer.
What is on this page
The tools split into four jobs. Comparison and analysis tools tell you about text you already have — the diff checker shows added and removed lines between two versions, useful for reviewing a paste, an exported config, or a piece of writing. The reading time calculator reports word count, paragraph count, and reading duration at slow, average, and fast speeds. Formatting tools clean up structure — the JSON formatter pretty-prints messy responses, validates syntax, and collapses nodes so a long object is navigable. Pattern tools answer questions about strings — the regex tester highlights matches, names capture groups, and explains the meaning of each token in the expression. Generation tools produce text on demand — the Lorem Ipsum generator gives you placeholder copy at a chosen paragraph, sentence, or word count.
Which to use when
Use the diff checker when reviewing a paste from a colleague, comparing two configurations, or auditing a copy edit. Use the JSON formatter when an API response arrives as one long line — most browsers do not pretty-print it. Use the regex tester when a pattern works in one engine but not another, or to inspect what a specific group matched. Use the Markdown editor when you want to draft README content, blog posts, or chat messages and preview the rendered result side by side.
Privacy
Every text tool here runs in your browser. Pasted content — including code, contracts, drafts, log lines, and anything else — stays on your device. Nothing is sent to a server, logged, or stored remotely. This makes the tools safe for proprietary copy, confidential drafts, personal writing, and any text that should not flow through a third party.