Free Online Utility Tools for Developers, Designers and Daily Work

Evarein Suite is a privacy-first collection of browser-based tools for currency conversion, timezone planning, JSON formatting, JWT decoding, hashing, text cleanup and more.

No signupBrowser-based workflowsMobile friendlyDeveloper and daily tools

Daily Use Tools

  • EvaFX - Convert currencies instantly with live exchange rates for 150+ currencies. Free online currency converter with browser-side workspace and cached rates.
  • EvaTime - Compare timezones side by side, edit any city time, and plan meetings across regions with a free online timezone converter.
  • EvaCalc - Convert length, weight, temperature, speed, area, volume, data, time, pressure and energy units online for free.

Developer Tools

  • EvaJSON - Format, validate, minify, sort, diff and convert JSON online. Free browser-based JSON toolkit with tree view and search.
  • EvaHash - Generate MD5, SHA-1, SHA-256 and SHA-512 hashes. Encode and decode Base64, URLs and HTML entities in your browser.
  • EvaJWT - Decode JWT tokens online and inspect header, payload, claims and expiry locally in your browser.
  • EvaDiff - Compare two texts side by side with line-by-line and character-level diff highlighting. Free online text diff tool.

Design and Text Tools

  • EvaColor - Pick colors, generate palettes, check WCAG contrast ratios and export CSS color tokens with a free online color toolkit.
  • EvaText - Convert text case, count words, sort lines, remove duplicates and apply useful text transformations online.

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