Russian ships by default. Bulgarian, Serbian, Ukrainian, and Macedonian are planned and slot in via the same pluggable language-pack system, so adding one is a single data file.

Converter mode shows two synced text areas: type in one and the other updates with the transliteration in the opposite script. IME mode is a single editor where your physical Latin keystrokes produce Cyrillic characters in real time, like a native operating-system input method.

For Russian: BGN/PCGN (English-language standard), ISO 9 (strict 1:1 bijective), GOST 7.79 System B (ASCII-safe with digraphs), and the ICAO Passport scheme used in Russian travel documents.

Most schemes use multi-character digraphs (e.g. sh → ш, ch → ч, shch → щ). In IME mode the tool buffers the previous keystroke for a short window and rewrites it when a digraph match is found, so typing feels natural.

Open the customizer to adjust global properties (key size, gap, corner radius, font, color theme) or click any key in the live preview to override its label, color, and width. Save the result as a named preset, switch between presets, or export and re-import them as JSON.

Yes. All transliteration, customization, and preset storage happens entirely in your browser. Nothing is sent to a server, and presets are saved in your browser's localStorage.

Yes. The layout is fully responsive: keys are sized for thumb tapping (≥44px), the virtual keyboard is full-width, and the customizer opens as a bottom sheet.

Every interactive element has an ARIA label, full keyboard navigation is supported (arrow keys in the virtual keyboard), focus rings are visible, and contrast meets WCAG-AA in both light and dark themes. Reduced-motion preferences are respected.