Your Developer Swiss Army Knife
Free online tools for JSON, regex, timezones, text editing, encoding, and more — no signup, runs in your browser.
Developer Tools
JSON Formatter
Format, validate, and minify JSON in your browser.
Open →Regex Tester
Test regular expressions with live highlighting.
Open →Cron Generator
Build cron expressions and see next run times.
Open →Base64 Encoder
Encode and decode Base64 text with URL-safe mode.
Open →JWT Decoder
Decode JWT headers and payloads locally.
Open →UUID Generator
Generate random UUID v4 identifiers in your browser.
Open →XML Formatter
Format, validate, and minify XML in your browser.
Open →JSON to CSV Converter
Convert a JSON array of objects to CSV with headers.
Open →HTML Formatter
Format, validate, and minify HTML in your browser.
Open →Encode & Decode
URL Encoder
URL encode and decode strings instantly.
Open →HTML Entity Encoder
Encode and decode HTML entities.
Open →Unicode Escape Converter
Convert text to \uXXXX Unicode escapes and back.
Open →URL Parameter Parser
Parse, edit, and rebuild URL query strings.
Open →Tracking Parameter Stripper
Remove UTM, fbclid, gclid, and other tracking params from URLs.
Open →URL Expander
Expand short URLs to their final destination.
Open →Security
Time & Date
Timezone Converter
Convert date and time between world timezones instantly.
Open →Time Difference Calculator
Calculate the difference between two dates and times.
Open →Date Duration Calculator
Count days, weeks, and months between two calendar dates.
Open →Unix Timestamp Converter
Convert Unix timestamps to human-readable dates and back.
Open →Text Tools
Word Counter
Count words, characters, lines, and sentences in your text.
Open →Case Converter
Convert text to upper, lower, title, or sentence case.
Open →Remove Duplicate Lines
Remove duplicate lines from text while keeping order.
Open →Sort Lines
Sort lines alphabetically ascending or descending.
Open →Text Diff
Compare two texts and see line-by-line differences.
Open →Identifier Case Converter
Convert between camelCase, snake_case, kebab-case, and more.
Open →Remove Empty Lines
Remove blank and whitespace-only lines from text.
Open →URL Extractor
Extract http and https URLs from text with deduplication.
Open →String Splitter
Split text by comma, tab, newline, or custom delimiter.
Open →Chinese Converter
Convert between Simplified and Traditional Chinese.
Open →