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Browser-first utilities for developers, writers, marketers and digital teams. No account is required. Most transformations run locally in your browser.
JSON, regex, SQL, JWT, URLs and more
Browse collection →Utility collectionMeta tags, UTM, sitemap and structured data
Browse collection →Utility collectionCount, clean, transform and compare text
Browse collection →Utility collectionPercentages, dates, time, data sizes and more
Browse collection →Search by task, tool name or category. Everything here is free to use.
Test JavaScript regular expressions against sample text with configurable flags, matches and capture-group output in your browser.
Open tool DeveloperFormat common SQL queries with clause-aware indentation and a selectable SQL dialect label for Standard SQL, PostgreSQL, MySQL or SQLite.
Open tool DeveloperGenerate cryptographic hashes locally in your browser using the Web Crypto API.
Open tool DeveloperFormat and pretty-print JSON in your browser with configurable indentation and clear validation feedback.
Open tool DeveloperValidate JSON syntax in your browser with parser error details including line and column when available.
Open tool DeveloperRemove unnecessary JSON whitespace while preserving valid JSON structure.
Open tool DeveloperCompare two JSON documents and report added, removed and changed values by JSON path in your browser.
Open tool DeveloperConvert an array of JSON objects into CSV in your browser.
Open tool DeveloperConvert comma-separated tabular data into a JSON array in your browser.
Open tool DeveloperEncode or decode URL components safely in your browser.
Open tool DeveloperEncode text to Base64 or decode Base64 text directly in your browser.
Open tool DeveloperFormat HTML with readable indentation in your browser.
Open tool DeveloperFormat XML with readable indentation in your browser.
Open tool DeveloperGenerate RFC 4122-style random UUIDs locally in your browser.
Open tool DeveloperConvert Unix timestamps to readable UTC dates and dates to Unix seconds.
Open tool DeveloperDecode the header and payload of a JWT locally without verifying its signature.
Open toolCompare two text blocks by line, word or character in your browser with optional case and whitespace ignoring.
Open tool TextCount words, characters, lines and paragraphs instantly in your browser.
Open tool TextCount characters with and without spaces directly in your browser.
Open tool TextConvert text between common capitalization styles in your browser.
Open tool TextTurn a title into a clean, URL-friendly slug in your browser.
Open tool TextRemove duplicate lines while preserving the first occurrence.
Open tool TextSort lines alphabetically or reverse their order in your browser.
Open tool TextCollapse repeated spaces and clean common whitespace without uploading your text.
Open tool TextEstimate reading time from the amount of text in your browser.
Open tool TextRepeat a text value a chosen number of times in your browser.
Open tool TextReverse text by character or line directly in your browser.
Open toolGenerate clean title, description, canonical and social metadata markup.
Open tool Web & SEOGenerate a basic robots.txt file for a website with crawl directives and sitemap URL.
Open tool Web & SEOGenerate a simple XML sitemap from a list of URLs in your browser.
Open tool Web & SEOGenerate a canonical link element from a page URL.
Open tool Web & SEOGenerate Open Graph and Twitter/X card metadata for a page.
Open tool Web & SEOBuild tagged campaign URLs with UTM parameters in your browser.
Open tool Web & SEOBreak a URL into protocol, host, path, query and fragment components.
Open tool Web & SEOGenerate basic JSON-LD for common WebPage, Article and Organization use cases.
Open tool Web & SEOEncode special characters as HTML entities or decode entities back to readable text in your browser.
Open toolCalculate percentages, percentage changes and values from percentages.
Open tool CalculatorsCalculate discount amounts and final prices from an original price and discount rate.
Open tool CalculatorsCalculate a tip and split a bill among people.
Open tool CalculatorsCalculate age from a birth date and a target date in your browser.
Open tool CalculatorsCalculate the number of days between two dates.
Open tool CalculatorsCalculate elapsed time between two clock times.
Open tool CalculatorsConvert digital storage sizes between common decimal and binary units.
Open tool CalculatorsCalculate proportional dimensions from an aspect ratio and one known dimension.
Open toolEach published utility is designed around a real task, clear search intent, accessible UX, and a crawlable explanatory page. We expand the library when a tool adds genuine user value rather than publishing thin pages at scale.