Readable text in AI images: write a clearer prompt

Decide whether the words must be exact

For a fictional café sign, small letter variations may simply make the image unsuitable. For a date, price, instruction or real brand name, the words need closer checking. OpenAI documents limits in text clarity and precise placement, so an accepted prompt is not proof that the lettering is correct. If exact text is essential, plan a version with the background created separately and lettering added in an image editor you already use.

Sources for this section OpenAI: image generation limitations

Separate the words from the scene description

Write a small brief: the exact phrase, its language, where it sits, the surface carrying it and the intended frame. Our fictional example uses the short phrase "OPEN LATE" on a front-facing sign. Ask for no other lettering if that serves your brief. This is a practical way to inspect the request, not a universal syntax or a guarantee that the generator follows every instruction.

Use the generator’s documented text instructions

Midjourney documents double quotation marks around intended text in versions 6 and later, and recommends short wording. Our fictional example is: front-facing café sign with the words "OPEN LATE", clear block lettering, no other text. Save the phrase and inspect the result; this syntax belongs to Midjourney, not every generator.

Sources for this section Midjourney: Text Generation

Inspect letters and layout separately

Compare the output with your brief character by character, including accents, punctuation and repeated letters. Then examine placement: is text cut off, hidden by an object or too small at the intended display size? OpenAI also documents limitations in precise composition. If spelling is wrong but the scene works, consider an editing workflow instead of adding increasingly conflicting instructions to the prompt. No example here claims to be a tested generated image.

Sources for this section OpenAI: image generation limitations

Choose generated lettering or an editorial overlay

Generated lettering can integrate words into a surface, but the output still needs inspection. An overlay in an editor gives you direct control over the typed text, while matching perspective and lighting becomes your editing task. For a simple announcement, a clean text area may be enough; for words painted on a curved object, the work is different. Use the comparison table to choose a workflow before spending another generation attempt.

Sources for this section OpenAI: image generation limitations

Start from a LarpGPT scene, then adapt the brief

LarpGPT provides a library of photo prompts that you can inspect and copy for an external image tool. Choose a scene, preserve the original text, then add your exact lettering brief without contradicting its framing. LarpGPT does not generate the image or guarantee the text. Its existing guide on copying for your selected engine explains export differences; the aspect-ratio and one-variable comparison guides help you keep framing and revisions readable. Use fictional examples or material you have permission to use.

Sources for this section LarpGPT product features, publisher source

Further reading

• OpenAI: image generation limitations
• Midjourney: Text Generation
• LarpGPT product features, publisher source