Prompting Cheatsheet

Quote text

Every non english prompts submitted to the application are translated in english, prior to be moderated and upscaled.

But users may want to generate text, in their own language, in the target image.

Preserve source language

To prevent text translation, surround it between quotes like this:

Un homme qui tient un écriteau avec écrit "Parlez-vous Francais ?" dessus

The prompt above will be translated then upscaled like this:

a man, holding a sign that says "parlez-vous francais ?", urban street background, candid street photography, natural lighting, 50mm lens, photo-realistic, documentary style

Typography control

Capitalize text

Add typographic style to your text

Describe colors

IA generative models are very versatiles and understand well colors instructions. But actually, they are unable to respect exact colors RGB or HEX values.

Generally, we discourage usage of color specific codes like RGB or HEX values, and prefer textual guidance, even if less precise.

That said, Seelab will find the best color fit according the code you provide. But once again, don’t expect precise color, but a fidelity in tone.

Examples

Botanic Figure of a red mushroom, #FFF background

Botanic Figure of a red mushroom, 173,216,230 background

Botanic Figure of a red mushroom, dark orange background

A #FF4500 fish on black background

Auto Aspect Ratio [WIP]

When the format selector is set to Auto, Seelab will select the “best” aspect ratio according the image you want to generate.

In this mode, It is also possible to indicate the desired ratio right from the prompt, Seelab will care about generating the image in the corresponding format.

Seelab actually supports the following aspect ratios: 1:1, 3:4, 4:3, 9:16, 16:9

Examples

Black and white portrait of a man looking at a sunset

Images are generated in 3:4 format that works well with portraits

Cinematic black and white photo of a man looking at a sunset

16:9 wide screen format was chosen because of the “cinematic” keyword

Instagram story black and white photo of a man looking at a sunset

9:16 story format was chosen. Note: Flux do not consider Instagram as a monochrome place !

Updated on: 20/08/2025