How to Get Clean Korean Text in AI Images
Korean text in AI images often comes out garbled. Six prompt rules that reduce errors, and how to fix a single wrong character without regenerating.
To get clean Korean text in an AI image, write the exact wording inside quotation marks, keep it short, and spell out the position, size, and line breaks yourself. If one or two characters still come out wrong, don’t regenerate the whole image: fix that one spot with a spot edit. For long sentences, or anything like a date where a single wrong character matters, add the text outside the image instead.
Invitations, shop signs, birthday cards, YouTube thumbnails. When you make them with AI, the picture often looks right while the Korean lettering looks like an alien script. With Hangul Day coming up on October 9, here is how to write prompts that break less often, and how to fix just the character that broke.
Key Takeaways
- Put the exact text in quotation marks, character for character.
- Keep it to a few short words per line. Fewer characters means fewer places to go wrong.
- Describe the position, size, lettering style, and line breaks in words.
- Keep the scene description and the text in separate parts of the prompt.
- If a character is still wrong, spot edit that area instead of regenerating everything.
- For long notices, logos, and print pieces where dates and numbers matter, add the text outside the image.
Why Korean text breaks so often in AI images
Image models don’t write letters. They draw shapes that look like letters. They learned what text looks like from a huge number of images, but they don’t follow the rules a person does when building a Korean character from consonants and vowels and adding a final consonant underneath.
Hangul is especially hard for this approach. Each character is a block assembled from a consonant, a vowel, and sometimes a final consonant, so there are more than ten thousand possible syllable blocks (Unicode lists 11,172), and losing one stroke, flipping a vowel, or swapping a final consonant turns it into a different character. 날 becomes 낟, 한 becomes 헌. It is also likely that the models have seen far more Latin letters than Hangul in the images they learned from.
So the longer the text, the smaller the letters, and the more they mix with other elements, the more likely an error becomes. Every rule below comes from that: reduce how much text the model has to draw, and make it unambiguous which shapes it should draw.
Six prompt rules for cleaner Korean text
These rules are not tied to one tool. You can use them when you prompt ChatGPT or any other image generator, too.
1. Put the exact text in quotation marks
If you write “add a short Hangul Day greeting,” the model makes up the wording too. Decide the text yourself and wrap it in quotation marks.
- Weak: Add a short greeting celebrating Hangul Day
- Better: In the center of the card, add the Korean text “한글날 축하해요”
Quotation marks tell the model that everything between them must be copied exactly. Write the spacing exactly as you want it, too.
2. Keep each line short
The less text in one image, the better. One greeting line for a card, or just the shop name for a sign, is about right. If the message wants to be longer, put only the key word in the image and move the rest outside it (more on that below).
3. Specify position and size
Say where the text goes and how big it is. Large letters have more room to come out with clean strokes than small ones.
- Top center of the card, about half the card’s width
- Dead center of the wooden sign, nearly filling the board
- Small, in the bottom-right corner (small text breaks easily, so only when you need it)
4. Describe the lettering style in words
Describing the shape is safer than naming a specific font, because there is no guarantee the model knows that font by name.
- Bold, even sans-serif look with uniform stroke weight
- Brush calligraphy look, stroke ends slightly split
- Round, friendly handwriting with a crayon texture
Simple, thick strokes tend to hold their shape better. The more decorative the style, the easier it is for strokes to tangle.
5. Set the line breaks yourself
If there are two lines or more, don’t leave the break to the model. It may split a word in the middle or shuffle the order of characters.
- Line 1: “한글날”
- Line 2: “축하해요”
- Both lines centered, line 1 larger than line 2
6. Separate the scene from the text
When the wording is buried among background, object, and lighting descriptions, the model can lose track of where the text starts and ends. Describe the scene first, then add a separate “text in the image” block at the end. Also tell the model not to add any other text: models often fill backgrounds with small, unreadable lettering.
[Scene] A vertical card with a pale ivory hanji paper texture. Small grass-leaf
patterns painted in ink along the edges. Soft natural light, flat front-on view.
[Text in the image]
- Position: top center of the card, about half the card's width
- Text (Korean Hangul, do not translate): "한글날"
- Lettering style: bold brush calligraphy, ink black
- Do not add any other letters, numbers, or symbols.How to fix one wrong character without regenerating
Even when you follow the rules, a character can come out wrong. If you edit the prompt and regenerate, the character may get fixed, but the background and composition you liked can change too, and one character turns into a full re-check of the image.
This is what spot AI image editing is for: click the area to change, write a short instruction, and only that part changes while the rest stays. YouViCo added it on September 16, 2026. Here is how it works:
- Open the image with the wrong character in the image editor from your project and click AI edit.
- In the AI image panel, choose Spot.
- Click on the wrong character. A numbered pin appears.
- Write a short instruction next to it, for example: Change this character to “날”. Match the font, size, and color of the characters next to it.
- Pick a model and generate. The panel shows the credit cost before you start.
- Put the result next to the original and check the fixed character and the area around it.
In the instruction, quote the correct character exactly and say what it should match (font, size, color, slant). If several characters are wrong, fixing one spot at a time makes each result easier to check. Nearby characters can shift slightly after an edit, so always compare with the original before approving.
When to add text outside the image
You don’t have to hand every word to the AI. In these cases it is safer to generate the image first and add the text in a design or document tool afterwards.
| Case | Why add it outside the image |
|---|---|
| Sentences longer than two or three lines | More characters means more places to break, and more to check one by one |
| Official notices and announcements | A single spelling error affects trust |
| Logos and brand names | They have a fixed shape, and a close drawing is not good enough |
| Print pieces with dates, times, phone numbers, or prices | One wrong digit makes the information wrong |
For these, add a line like “leave the top third empty for text” or “do not put any text in the image” to the prompt, so you get clean space to place the text later.
Hangul Day practice: three greeting card prompts
In YouViCo, open New file ▸ AI in a project, set the output type to image, choose an image model such as GPT Image 2.5, and paste one of the prompts below. AI generation is available from the Standard plan. Before you generate, YouViCo shows the maximum credits the run can use, and a failed generation returns its credits. Results differ from run to run, so if a character comes out wrong, finish with the spot edit above.
Prompt 1. Brush calligraphy on hanji
[Scene] A vertical card with a pale ivory hanji paper texture. A single orchid stem
painted in ink in the bottom-right corner. Generous empty space, calm mood. Flat
front-on view.
[Text in the image]
- Position: center of the card, about half the card's width
- Text (Korean Hangul, do not translate): "한글날"
- Lettering style: bold brush calligraphy, ink black
- Do not add any other letters, numbers, or symbols.Prompt 2. Two-line sans-serif greeting
[Scene] A horizontal card on a plain sky-blue background. Three paper-cut clouds
along the bottom. Bright, clean illustration style.
[Text in the image]
- Line 1 (Korean Hangul, do not translate): "한글날"
- Line 2 (Korean Hangul, do not translate): "축하해요"
- Position: top center, both lines centered
- Size: line 1 larger than line 2
- Lettering style: bold, even sans-serif, dark navy
- Do not add any other letters, numbers, or symbols.Prompt 3. Crayon handwriting
[Scene] A yellow sun and a few small flowers drawn in crayon on cream drawing
paper. Warm style, as if a child drew it.
[Text in the image]
- Position: above the drawing, about two thirds of the paper's width
- Text (Korean Hangul, do not translate): "고마워 한글"
- Lettering style: round handwriting, crayon texture, brown
- Do not add any other letters, numbers, or symbols.All three keep the text short, separate scene from text, and block extra lettering. Swap the wording and they work as birthday or thank-you cards too.
When your team reviews the wording
For images several people need to check, like a shop sign or an event poster, talking directly on the image is faster than trading messages like “the final consonant on the third character looks off.”
In YouViCo, an AI-generated image stays in the project as a regular file, just like an upload. That means you can comment on the wrong character or circle it, pointing at it precisely with visual feedback. Fix it with a spot edit based on that comment, then set the file to approved once the wording is final. The file also keeps a record of the prompt and model that made it, so next year’s version can start from the same recipe. The design behind this flow is in how AI generation in YouViCo is designed.
FAQ
Can I put Korean text inside an English prompt?
Yes. You can write the scene in English and put only the wording, in Hangul, inside quotation marks. Say that it is Korean Hangul text and that the quoted text should be used as is, not translated. Which approach works better depends on the model and the wording, so try both with the same text.
Can I get a handwritten look?
Yes. Describe the shape and texture in words, like “round handwriting” or “crayon texture.” Handwriting is irregular by nature, though, so it can be hard to tell a wrong character from the natural wobble of handwriting. Check the final consonants and vowel directions one character at a time.
Does a spot edit use credits?
Yes. A spot edit is AI generation, so it uses AI credits. The cost is shown before you generate.
Which model writes Korean best?
Models differ in which wording and styles they handle well, and the same model gives different results from run to run, so a single ranking is hard to give. We are preparing a separate post on choosing an image model. Until then, following these rules and fixing wrong characters with a spot edit is the first thing to try, whichever model you use.