GPT Image 2 圖片內文字:讓標題、標籤與 UI 更清楚的提示詞範本

Apr 24, 2026

如果你總覺得模型「不會拼字」,很多時候問題其實不是拼寫本身,而是你沒有把 exact strings、placement 和 contrast 說清楚。

這篇文章把 GPT Image 2 text in image 的常見工作流拆成一套可直接複製的範本:海報 headline、縮圖文字、商品角標、菜單板、UI mockup,以及一組專門用來修復文字問題的微範本。核心思路只有一句話:先把版式講清楚,再談風格

先判斷問題到底出在哪裡

在你繼續 reroll 之前,先用這三種方式判斷:

  • 文字內容不對:把文案縮短,改成 exact strings,並明確寫 verbatim
  • 文字看不清:提高對比度,給文字留出乾淨背景,必要時加 stroke
  • 文字位置亂跑:給 text-safe zone、margin、alignment 與固定錨點

這三類,其實就是大多數 GPT Image 2 text in image 問題的根源。

圖片內文字通用清單

只要畫面裡有字,建議預設把這些約束寫進去:

  • exact strings in quotes
  • hierarchy:headline / subhead / CTA
  • placement anchors
  • clean text-safe zone
  • safe margins
  • contrast rule
  • no extra text anywhere
  • 一次只改一個變數

可讀文字的提示詞結構

要讓 GPT Image 2 text in image 更穩定,prompt 裡至少要有這七層:

  1. 資產類型與平台
  2. 逐字文案
  3. 層級關係
  4. 位置與安全區
  5. 背景與對比度規則
  6. 字體與字重約束
  7. 硬約束:不要額外文字、日期、符號與浮水印

適合短文案的 exact strings 範例

如果你要做清晰的圖片內文字,優先使用短句:

  • "SPRING SALE"
  • "NEW"
  • "LIMITED DROP"
  • "TRY IT FREE"
  • "SHOP NOW"

文案越短,GPT Image 2 text in image 的可讀性通常越高。

微範本庫:先修小問題

下面這些微範本適合直接插進任何大模板裡,用來補 exact strings、安全區、邊距、對比度和背景整理。

Micro template — gpt-image-2 text in image: exact strings only
Use the following text verbatim and do not add any other words. No extra text anywhere.
Micro template — gpt-image-2 text in image: text-safe zone
Create a clean text-safe zone at {PLACEMENT} occupying {PERCENT}% of the canvas. Keep it free of patterns.
Micro template — gpt-image-2 text in image: safe margins
Keep {PERCENT}% safe margins on all sides. Do not place text near the edges.
Micro template — gpt-image-2 text in image: contrast rule
Ensure high contrast between text and background. If background is dark, text must be light (and vice versa).
Micro template — gpt-image-2 text in image: outline stroke
Add a subtle outline/stroke to the text to preserve readability at thumbnail size.
Micro template — gpt-image-2 text in image: no decorative fonts
Use a clean bold sans font for the headline. Avoid decorative fonts.
Micro template — gpt-image-2 text in image: two lines max
Limit headline to 2 lines maximum. Keep words short. Increase font size.
Micro template — gpt-image-2 text in image: simplify copy
Rewrite the headline to 3–5 words and the subhead to under 8 words while preserving meaning.
Micro template — gpt-image-2 text in image: lock layout anchors
Keep the text block position fixed across variants. Do not move it. Keep margins identical.
Micro template — gpt-image-2 text in image: one-variable variants
Generate 3 variants changing ONLY {VARIABLE}. Keep layout, margins, and text placement identical.
Micro template — gpt-image-2 text in image: remove background noise
Simplify the background behind text. Use a subtle blur or a solid backing shape behind the text.
Micro template — gpt-image-2 text in image: forbid random numbers
Do not add random numbers, dates, hashtags, or symbols unless explicitly provided in the exact strings.

可直接複製的大範本

範本 1:海報 headline + CTA

適合活動圖、品牌海報或短週期促銷圖。重點是先把 headline 區和 CTA 區固定住。

gpt-image-2 text in image template — poster
Create a modern poster with readable text.

Layout:
- Aspect ratio: 2:3
- Keep a clean text-safe zone at the top (30% height)
- Keep a clean CTA-safe zone at the bottom (20% height)
- Safe margins: 10% on all sides
- Background behind text must be simple (no patterns)

Text (verbatim, no extra text):
Headline: "SPRING SALE"
Subhead: "Up to 40% off"
CTA: "This Weekend"

Typography:
- Headline: very large, bold sans, all caps
- Subhead: smaller, regular sans
- CTA: bold pill button, high contrast
- Add a subtle text outline/stroke for readability

Hard constraints:
- No watermark
- No extra words, no extra dates
- No misspellings

範本 2:YouTube 縮圖(兩行內,大字優先)

縮圖裡最怕的是字太多、太小、背景太花。這個範本先把文字區留出來。

gpt-image-2 text in image template — YouTube thumbnail
Create a YouTube thumbnail with extremely readable text.

Layout:
- Aspect ratio: 16:9
- Subject: creator at desk, clean background
- Reserve left 40% as a clean text-safe zone
- Safe margins: 8%

Text (verbatim, no extra text):
Headline: "STOP GUESSING"
Subhead: "USE TEMPLATES"

Typography + contrast:
- Headline: massive, bold, high contrast, thick outline
- Subhead: smaller, aligned under headline
- Background behind text must be simple and dark

Hard constraints:
- No tiny text
- No additional words
- No watermark

範本 3:商品角標 / 標籤

適合電商產品圖裡的 NEW、SALE、Limited drop 這類短標籤。關鍵是讓 badge 區域獨立,且有高對比底色。

gpt-image-2 text in image template — product badge label
Create a product image with a readable badge label.

Layout:
- Aspect ratio: 1:1
- Product centered, clean studio background
- Reserve top-right 25% as badge area with solid color backing
- Safe margins: 12%

Text (verbatim, no extra text):
Headline: "NEW"
Subhead: "Limited drop"

Badge rules:
- Badge is a rounded pill with high contrast
- Text centered, large, bold
- No extra text anywhere else

Hard constraints:
- No watermark, no additional logos

範本 4:菜單板(文字少而整齊)

菜單板最容易因為資訊量過多而崩掉,所以這類圖片必須強制控制條目數與版式。

gpt-image-2 text in image template — menu board
Create a cafe menu board with readable text.

Layout:
- Aspect ratio: 4:5
- Use a simple chalkboard background with a clean text-safe zone
- Two columns only, consistent alignment
- Safe margins: 10%

Text (verbatim, no extra text):
Headline: "MENU"
Subhead: "Coffee"
CTA: "Latte • Espresso • Cold Brew"

Typography:
- Headline large, bold
- Items medium size, clear spacing
- High contrast (white text on dark background)

Hard constraints:
- No extra items
- No prices
- No watermark

範本 5:UI mockup 主標題 + 按鈕

如果你需要一張像 SaaS 截圖的行銷圖,這個範本會優先約束 grid、左文右圖與按鈕可讀性。

gpt-image-2 text in image template — UI mockup hero
Create a clean SaaS landing UI mockup screenshot with readable hero text.

Layout:
- Aspect ratio: 16:9
- Left text column, right product preview
- 12-column grid, generous whitespace, safe margins 10%

Text (verbatim, no extra text):
Headline: "Readable text, every time"
Subhead: "Templates that ship marketing assets faster."
CTA: "Try it free"

Typography + contrast:
- Modern sans, strong headline, smaller subhead
- CTA is a high-contrast button
- Ensure all text is legible at thumbnail size

Hard constraints:
- No real brand logos
- No watermarks
- No extra text

一套更穩的工作流

如果你的目標不是「一張看起來不錯的圖」,而是一批可重複使用的素材,流程會比單條 prompt 更重要:

  1. 先用 /text-to-image/gpt-image-2 出基線圖
  2. 布局接近時,切到 /image-to-image/gpt-image-2 調整文案與間距
  3. 每輪只改一個變數,例如 headline、顏色或 placement
  4. 把好用的 exact strings、safe margins 與 badge 規則沉澱成團隊模板

常見問題

為什麼長文案更容易失敗?

因為字一長,字級就會變小,層級與間距也更容易亂。先縮短 headline,再把 hierarchy 和 safe zone 說清楚。

圖片裡為什麼會多出隨機文字?

通常是因為你沒有明確寫 no extra text,也沒有限制背景和文字區域。加上 exact strings + no extra text,效果會穩很多。

什麼時候該停止 reroll,改用編輯?

當畫面的構圖已經接近可用,只差文字位置、背景整理或局部修正時,就不要再整張重抽了,直接去 /image-to-image/gpt-image-2

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GPT Image 2 圖片內文字:讓標題、標籤與 UI 更清楚的提示詞範本 | GPT Image 2 博客