Undertale Text Box Generator

About Undertale Text Box Generator

The most complete free Undertale text box generator online. Create authentic dialogue boxes with 23 characters from both Undertale and Deltarune — Sans, Papyrus, Toriel, Undyne, Flowey, Spamton, Ralsei, Susie, and more. Features typewriter animation with character-specific typing sounds powered by Web Audio API, 8 soul text colors matching the SOUL traits (Determination, Patience, Bravery, Integrity, Perseverance, Kindness, Justice), 5 box styles (Classic, Deltarune, Genocide, Hotland, Waterfall), character expressions, adjustable typing speed, narrator mode, and high-resolution PNG export. Includes iconic quotes from both games and a text history panel. No sign-up, no download — runs entirely in your browser.

Undertale Text Box Generator Features

• 23 characters from both Undertale and Deltarune with unique expressions
• Typewriter animation with character-specific typing sounds via Web Audio API
• 8 SOUL text colors: White, Yellow (Justice), Red (Determination), Cyan (Patience), Orange (Bravery), Blue (Integrity), Purple (Perseverance), Green (Kindness)
• 5 box styles: Classic, Deltarune, Genocide, Hotland, and Waterfall
• Character expression system — switch between Normal, Battle, Sad, and more
• Adjustable typing speed from 10ms (fast) to 120ms (slow)
• High-resolution PNG export with authentic pixel-art rendering
• Copy formatted dialogue text for Discord, Reddit, or social media
• Built-in iconic quotes from both games
• Narrator/hide portrait mode for narration-style text
• Text history panel with 10 recent generations
• Premium dark sidebar layout with GSAP animations