Developer and web tools that get one job done.
Generate, decode, validate, convert and clean technical data with focused browser-based utilities. No account required.
15 technical tools · Free to use · No sign-up
Developer tools
UUID Generator
Generate secure UUID v4 identifiers instantly in your browser, one at a time or in bulk.
Unix Timestamp Converter
Convert Unix timestamps to readable dates and turn dates back into seconds or milliseconds.
JWT Decoder
Decode JWT headers and payloads locally and inspect common time claims without sending tokens anywhere.
Base64 Encoder & Decoder
Encode UTF-8 text to Base64 or decode Base64 and Base64URL values back to text.
Cron Expression Generator
Build standard 5-field cron expressions and preview the next scheduled run times.
SQL Formatter
Format common SQL statements into cleaner, easier-to-read queries in your browser.
SHA-256 Generator
Generate a SHA-256 hexadecimal hash from text with the browser Web Crypto API.
Web tools
URL Encoder & Decoder
Encode or decode URL text and query values with browser-native percent encoding.
URL Parser
Break a URL into protocol, host, port, path, query string, fragment and origin.
Query String Parser
Parse a query string or full URL into readable key-value parameters.
Text & Data tools
YAML Validator
Validate common YAML structures, catch indentation problems and preview parsed data locally.
JSON ↔ YAML Converter
Convert JSON to readable YAML or common YAML data structures back to formatted JSON.
XML Formatter
Validate and pretty-print XML with readable indentation directly in your browser.
JSON Minifier
Validate and compact JSON by removing unnecessary whitespace while preserving the data.
Spreadsheet List Cleaner
Remove duplicates, tidy pasted columns and find differences between two lists.
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Privacy-first utilities
The new technical tools are designed to work locally in your browser wherever possible.
Read about privacy →Legacy AI resources
The previous prompt library remains available while KRIYANO transitions toward developer and web utilities.
Open the legacy prompt library →Legacy utilities
These older tools remain available during the transition but are no longer part of KRIYANO's main technical direction.
Margin & Markup Calculator
Find your selling price, understand your margin and see what a discount changes.
Quotation Builder
Turn your line items into a clean quotation, ready to print or save as a PDF.
KRIYANO CHECK
Spot claims, assumptions and numbers in AI output that deserve a second look.
AI Prompt Builder
Give your AI a clearer task, useful context and the right output instructions.