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 →Encode & Decode
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 →