undertaletextboxgenerator.online

You can make a pixel font text box in a browser with the Undertale Text Box Generator: pick a font preset (Determination Mono for narration, Sans Comic Style for casual lines, Papyrus Decorative for loud ones), choose a border and sprite, type your dialogue, then export as PNG, GIF, or MP4. The tool is built for Undertale and Deltarune-style dialogue boxes, so it suits fan content, memes, and roleplay rather than general graphic design.

What the tool gives you

The generator is a free online tool for creating Undertale-style dialogue boxes with pixel-perfect accuracy, per the site. Its core parts:

• Typography system — pixel fonts including Determination Mono, Sans Comic Style, and Papyrus Decorative.
• Border styles — 12 presets, including the official Original Box, Deltarune's Dark World frame, AU themes (Underfell, Underswap, Primus), tributes (Earthbound, FNAStale), and custom shapes like Octagonal and Shaded Ground.
• Sprites and portraits — attach a character portrait or sprite to the box.
• Typewriter animation — preview the text reveal timing before exporting.
• Export formats — PNG, GIF, and MP4, plus share links and a box stacker that holds up to 30 boxes.

Step by step: build and export a box

1. Start from a preset or a blank box. Quick presets include Classic Undertale, Sans Meme, Papyrus Dialogue, Battle Text, Choice Box, and Animated GIF. Starting from a preset sets font, border, and tone together, which avoids mismatched combinations.
2. Pick the font that matches the voice. Determination Mono reads as classic narration; Sans Comic Style is lowercase and laid-back; Papyrus Decorative is uppercase and loud. If the text feels wrong for the character, change the font before anything else.
3. Choose a border style. The default is Original Box (classic Undertale). Switch to Dark World for Deltarune, or an AU/tribute frame if you're making fan content in that style.
4. Add a sprite or portrait if your scene needs a character.
5. Type your dialogue. The editor supports \color codes to change text color, which is useful for colored emphasis lines.
6. Preview the typewriter timing. The animation preview shows how the text reveals; adjust until the pacing feels right.
7. Export in the format you need:
   • PNG for a still image — the default size shown is 578 × 152.
   • GIF for animated typewriter text.
   • MP4 for clip-ready dialogue with sound. MP4 is exported separately below the main export area so video export can keep audio.

You can also copy a share link or add the box to the stacker (up to 30) to export a set of boxes together.

Choosing an export format

If you're unsure, export PNG first to check the layout, then switch to GIF or MP4 once the text and timing are final.

Common snags and fixes

• Font doesn't match the character's tone. Reset to a quick preset (Classic Undertale, Sans Meme, Papyrus Dialogue) and rebuild from there rather than tweaking a mismatched setup.
• Portrait missing or wrong. Check that a sprite is selected in the sprite control before exporting; a blank sprite slot exports a box without a character.
• Animation looks off in the still export. PNG captures one frame, so typewriter timing only shows in GIF or MP4. Use those formats if the reveal matters.
• MP4 not appearing with the other exports. It's intentional: MP4 is exported separately below the main export area so the video can keep sound. Look for the separate MP4 export control.
• Wrong border for the scene. The border list mixes official, AU, tribute, and custom styles; confirm you're on Original Box for classic Undertale or Dark World for Deltarune before exporting.

Related tasks

The same workflow covers the specific variants: a Sans dialogue box (Sans Meme preset plus Comic Style font), a Deltarune text box (Dark World border), and a standard Undertale box (Original Box plus Determination Mono). In each case, the export choices are the same PNG, GIF, or MP4.

To make a Sans-style dialogue box, open the Undertale Text Box Generator, choose the Sans Meme preset (or pick the Sans Comic Style font manually), type your lowercase dialogue, preview the typewriter timing, then export as PNG for a still image, GIF for a looping animation, or MP4 for a clip with sound. The whole process runs in the browser and the tool is described as free on its site.

Step 1: Start from the Sans preset

The generator's Quick Presets row includes a Sans Meme option labeled "Comic Sans lowercase vibe." Selecting it sets the font and tone in one click, which is the fastest route if you want the familiar lazy, lowercase look.

If you'd rather build it yourself, use the Font control and choose Sans Comic Style from the typography system. The site describes the font options as Determination Mono for classic narration, Sans Comic Style for laid-back dialogue, and Papyrus Decorative for loud lines.

Expected result: the preview box shows Comic Sans-style lettering. If the text appears in all caps, you likely still have the Papyrus preset or another uppercase style active — switch the font back to Sans Comic Style.

Step 2: Enter the dialogue and set the frame

Type your line into the dialogue field. The tool notes that you can use \color codes to change text color, which is useful if you want a colored punchline inside an otherwise plain box.

Then adjust the surrounding elements:

• Border Style — 12 presets are listed, including the Official Original Box (classic Undertale), Official Dark World (Deltarune), several AU themes, and custom shapes like Octagonal and Shaded Ground. The default "Original Box" is the closest match to Sans's in-game scenes.
• Sprite / portrait — add a character portrait if you want a face beside the text. If no sprite appears, check that a portrait is actually selected rather than left empty.
• Size — the default canvas is shown as 578 × 152, which suits a single short line.

Expected result: the preview updates live as you change border, sprite, and text.

Step 3: Preview the typewriter animation

Before exporting, play the preview to check the typewriter timing — the speed at which characters appear. This matters most if you plan to export a GIF or MP4, because the animation is baked into the file.

Common snag: if the animation looks too fast or too slow, adjust the timing control and replay before exporting. Re-exporting later means redoing the step, so settle the pacing first.

Step 4: Choose the export format

The generator offers three outputs, and the right one depends on what you need:

Click Export PNG or Export GIF from the main panel. For video, use the separate Export MP4 control. The tool also provides Copy Link for shareable links and a Box Stacker (up to 30 boxes) if you're building a multi-line scene.

Expected result: a downloaded file matching the preview. If the MP4 has no audio, confirm you used the dedicated MP4 export rather than the PNG/GIF buttons.

Troubleshooting checklist

• Text is uppercase: switch from the Papyrus preset to Sans Meme or Sans Comic Style.
• Color code shows as literal text: verify the \color syntax matches the tool's expected format; the site lists color codes as a supported feature but doesn't publish the full syntax, so test in the preview first.
• No portrait appears: select a sprite explicitly; presets may not include one by default.
• Animation missing from PNG: PNG is a still format — use GIF or MP4 for the typewriter effect.
• Wrong border vibe: the Official Original Box is the standard Undertale frame; AU borders like Underfell or TS!Underswap change the palette and won't match canon Sans scenes.

Once the preview matches what you want, export once in your chosen format — the settings carry through, so there's no need to rebuild the box for a second format unless you're switching between still and animated output.

Open the Undertale Text Box Generator, pick a preset or start from a blank box, choose a font and border, add a portrait, type your dialogue, preview the typewriter timing, then export as PNG for a still image, GIF for an animated typewriter effect, or MP4 with sound for video. The tool is described as a free online generator for Undertale and Deltarune-style dialogue boxes, with exports in PNG, GIF, and MP4 and shareable links.

Before you start

• What you need: a browser, your dialogue text, and optionally a character portrait or sprite image.
• What the tool gives you: pixel-style fonts, 12 border presets, character portraits, typewriter animation preview, and PNG / GIF / MP4 export.
• Export formats by use: PNG for memes and still posts, GIF for looping typewriter dialogue, MP4 when you want video with sound.

Step 1: Choose a starting point

The generator offers quick presets so you don't have to build a box from scratch. Each preset sets a scene you can then tweak.

There is also a Flowery Deltarune page that lets you start from a finished scene, and a Random Dialogue option if you want a starting point to edit.

Step 2: Set the font and border

Fonts

Match the font to the speaker. The tool lists three pixel-perfect options:

• Determination Mono — classic narration.
• Sans Comic Style — laid-back dialogue.
• Papyrus Decorative — loud, decorative lines.

Borders

The border menu has 12 presets, grouped as official, AU, tribute, and custom styles:

• Official: Original Box (Classic Undertale), Dark World (Deltarune).
• AU: Underfell (dark and edgy), TS!Underswap (blue theme), Primus.
• Tribute: Earthbound/Mother style, FNAStale (FNAF + Undertale crossover).
• Custom: Octagonal (8-sided), Shaded Ground (shadow effects), Classic TuberTale, Surge!TuberTale, Derp (quirky cartoon).

If you change your mind, Reset to Default returns you to the Original Box.

Step 3: Add a portrait and write the dialogue

1. Open the Dialogue text area and type your line.
2. Use \color codes in the text to change the color of specific words — the tool's tip notes this directly.
3. Add a character portrait or sprite from the sprite options, or use a custom frame/sprite if you're matching a specific AU.

Keep lines short. Undertale boxes are small — the default export size shown is 578 × 152 — so long paragraphs will crowd the box or get cut off in the preview.

Step 4: Preview the typewriter animation

Before exporting, play the preview to check pacing. The typewriter effect reveals text character by character, and the timing is what makes a box feel authentic. If the text appears too fast or too slow, adjust the text length or speed setting until the reveal looks right.

Step 5: Export in the right format

Two practical notes from the tool itself:

• MP4 is a separate export step. Don't look for it in the same quick-export row as PNG and GIF — it lives below so the video can retain sound.
• Copy Link creates a shareable link to your box, useful for collaboration or saving a draft.

Stacking multiple boxes

If your scene needs several boxes in sequence, use Add to Stack. The stack holds up to 30 boxes, and Export Stack exports them together. This is the fastest way to build a multi-line conversation without re-exporting one box at a time.

Common snags

• Text overflows the box: shorten the line or split it across stacked boxes.
• Animation feels off: re-check the preview after any text edit; changing length changes the reveal timing.
• MP4 has no sound: confirm you used the separate MP4 export, not a GIF converted elsewhere.
• Wrong vibe for the character: swap the font and border together — a Papyrus line in Comic Sans reads as a different character.
• Lost your work: use Copy Link to save a shareable version before closing the tab.

Quick checklist

1. Pick a preset or blank box.
2. Choose font (Determination / Comic Sans / Papyrus) and border (official, AU, tribute, or custom).
3. Add portrait, type dialogue, add \color codes if needed.
4. Preview typewriter timing and adjust.
5. Export PNG, GIF, or MP4 (separate step, keeps sound); use Add to Stack for multi-box scenes.

Open the Undertale Text Box Generator, pick the Official Dark World (Deltarune) border preset, enter your dialogue, choose a font and sprite, then export as PNG for a still image, GIF for a typewriter animation, or MP4 for a clip with sound. The whole flow runs in the browser, and the tool also produces a share link so you can save or hand off the exact configuration.

Before You Start

You need a browser and a short line of dialogue. Decide up front what the box is for, because that determines the export format:

• Still image for a post or thumbnail → PNG
• Typewriter effect for a meme or reaction → GIF
• Clip with audio for video editing → MP4

The generator's default output is PNG at 578 × 152, which matches the classic box proportions. You can change the format in the export area before downloading.

Step 1: Choose the Deltarune Border

The border selector holds 12 presets. For a Deltarune look, choose Official Dark World (Deltarune), which gives you the Dark World dialogue frame. The Official Original Box is the classic Undertale style, so don't confuse the two if you specifically want Deltarune.

Other presets in the same list are tribute or AU styles (Underfell, Underswap, Earthbound, FNAStale, and custom shapes like Octagonal or Shaded Ground). They're useful if your scene is a crossover, but they won't read as Deltarune.

If you change your mind, Reset to Default returns you to the Original Box.

Step 2: Set Font, Sprite, and Text

Three controls shape the box content:

1. Font — the typography system includes Determination Mono for classic narration, a Sans Comic style for laid-back lines, and a Papyrus decorative font for loud uppercase dialogue. Pick the one that matches the character speaking.
2. Sprite — add a character portrait so the box reads as a specific speaker rather than generic narration.
3. Text — type your dialogue into the dialogue field.

A tip shown in the editor: use \color codes inside the text to change text color. That's the practical way to highlight a word or shift the mood of a line without leaving the text field.

Quick Presets as a Shortcut

If you don't want to configure each control, the preset row sets a starting scene for you: Classic Undertale, Sans Meme, Papyrus Dialogue, Battle Text, Choice Box, Animated GIF, and MP4 with Sound. Each preset adjusts text, sprite, and export intent together, so you can start from the closest one and then swap the border to Dark World.

Step 3: Preview the Typewriter Timing

Before exporting, play the box in the editor. The preview shows the typewriter animation timing, which matters most if you're making a GIF or MP4 — a line that types too fast loses the effect, and one that types too slowly makes a long GIF. Adjust the text length or timing until the reveal feels right, then move to export.

Step 4: Export in the Right Format

Two practical notes on export:

• MP4 is exported separately from the main export button, specifically so the video export can keep sound. Don't assume the main export covers video.
• Copy Link generates a share link for the current configuration. Use it to save a setup you like or send the exact box to a collaborator instead of re-describing the settings.

There's also a Box Stacker that holds up to 30 boxes, with Export Stack and Clear controls — handy if you're building a multi-line conversation and want consistent styling across frames.

Common Snags

• The box doesn't look like Deltarune. Check the border preset — Original Box is Undertale, not Dark World.
• The color code shows up as literal text. Confirm you're using the \color syntax the editor's tip describes rather than plain text.
• No audio in the video. Use the separate MP4 export path, which is the one built to keep sound.
• You lost a configuration you liked. Use Copy Link before closing the tab; the share link preserves the setup.

Once your box is exported, the PNG, GIF, or MP4 file is ready to drop into a post, a meme, or a video timeline without further conversion.