UNDERTALE TEXT BOX GENERATOR
Create pixel-perfect Undertale and Deltarune style dialogue boxes. Choose a character, type your text, and download as PNG or GIF.
Dialogue Text
16/500 characters. Use Enter for new lines.
Character
Box Style
Font
Text Color
Options
Preview
The Ultimate Guide to Undertale Dialogue Boxes
Authentic Game Aesthetics
In Undertale and Deltarune, dialogue boxes are the soul of character expression. Every box is meticulously designed with a stark black background and crisp white borders. Our generator captures this essence, allowing you to create pixel-perfect recreations that look like they were pulled directly from the game code.
From the classic rectangular frame to the modern rounded corners of Deltarune, the style defines the world your character inhabits.
Classic Undertale Style
Modern Deltarune Style
Characters & Expressions
A dialogue box is only as good as the character inside it. Our tool provides over 30 characters with hundreds of expressions. Whether it's Sans' iconic wink, Papyrus' exuberant grin, or Ralsei's gentle smile, you can convey exactly what your character is feeling.
Combined with the typewriter animation effect, these boxes bring your fan theories and memes to life in a way that static text never could.
Box Styles & Customization
We support four distinct box styles to match different fan-universes (AUs). The standard **Undertale** style features sharp corners and a simple white border. The **Deltarune** style offers a more modern, rounded aesthetic. For darker stories, the **Underfell** style provides a striking red border, while **Underswap** uses a calm blue.
Typography & Soul Colors
Fonts are crucial for authenticity. Our generator includes the "Determination" pixel font for general dialogue, along with character-specific fonts for Sans and Papyrus. To make your dialogue truly stand out, you can highlight key phrases with colors representing the seven human soul traits: Determination (Yellow), Bravery (Orange), Justice (Yellow), Kindness (Green), Patience (Blue), Integrity (Blue), and Perseverance (Purple).
Frequently Asked Questions
How do I download as a GIF?
Click the "Play" button to preview the animation, then click the "GIF" button to generate and download your animated dialogue box instantly.
Can I use custom soul colors?
Yes! Use the "Text Color" section to choose from 8 soul-themed colors, allowing you to highlight important keywords just like in the game.
Is this tool free to use?
Absolutely. Text Repeater Pro is a community-driven project. All features, including high-res PNG and GIF exports, are completely free.
Are more characters coming?
We regularly update our sprite library. If you have a specific request for a character or expression, feel free to reach out!
Last updated: May 2026. Text Repeater Pro is a fan-made tool. Undertale and Deltarune are trademarks of Toby Fox.