JSON Formatter & Validator
Pretty-print or minify JSON and see a plain-language parsing error when the document is invalid.
Free online utilities
Tools that stay on your device.
Format JSON, decode a JWT without pretending the signature was checked, compare text, and calculate dates or percentages. The interactive work happens in your browser.
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JSON to CSV Converter
Turn an array of flat objects into CSV, and stop when a nested value would have to be dropped.
Base64 Encoder & Decoder
Encode or decode UTF-8 text as standard or URL-safe Base64.
JWT Decoder
Decode a JSON Web Token header and payload. The signature is never reported as verified.
Regex Tester
Try a JavaScript regular expression and list matches, including an error when the pattern is invalid.
Unix Timestamp Converter
Convert Unix seconds or milliseconds to a calendar time in UTC and another time zone, or the other way around.
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Developer Tools
Format data, convert between JSON, CSV, and YAML, and inspect tokens, timestamps, and cron expressions without uploading the contents.
Text Tools
Count words, change case, and compare two pieces of text in the browser.
Everyday Tools
Percentage and date calculations with explicit rules for zero, leap years, and the ends of months.
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Guides
What stays on your device when you use a browser tool
Which PepsTools utilities run locally, what the contact form stores, and what optional ads do not see.
Convert Unix timestamps in seconds and milliseconds
Tell second timestamps from millisecond timestamps, and choose the time zone on purpose.
Cron expression syntax, without running a job
The five cron fields, the symbols this generator accepts, and the Quartz extras it refuses.