black-forest-labs/flux-canny-dev

Open-weight edge-guided image generation. Control structure and composition using Canny edge detection.

Capabilities

Seed

Community model (estimated from hardware time)

Name	Type	Description	Default	Constraints
`control_image` *	string (uri)	Image used to control the generation. The canny edge detection will be automatically generated.	`—`	—
`prompt` *	string	Prompt for generated image	`—`	—
`disable_safety_checker`	boolean	Disable safety checker for generated images.	`false`	—
`guidance`	number	Guidance for generated image	`30`	min: 0, max: 100
`megapixels`	string	Approximate number of megapixels for generated image. Use match_input to match the size of the input (with an upper limit of 1440x1440 pixels)	`"1"`	1 0.25 match_input
`num_inference_steps`	integer	Number of denoising steps. Recommended range is 28-50, and lower number of steps produce lower quality outputs, faster.	`28`	min: 1, max: 50
`num_outputs`	integer	Number of outputs to generate	`1`	min: 1, max: 4
`output_format`	string	Format of the output images	`"webp"`	webp jpg png
`output_quality`	integer	Quality when saving the output images, from 0 to 100. 100 is best quality, 0 is lowest quality. Not relevant for .png outputs	`80`	min: 0, max: 100
`seed`	integer	Random seed. Set for reproducible generation	`—`	—

control_image required string

Image used to control the generation. The canny edge detection will be automatically generated.

prompt required string

Prompt for generated image

disable_safety_checker boolean

Disable safety checker for generated images.

Default: false

guidance number

Guidance for generated image

Default: 30 min: 0, max: 100

megapixels string

Approximate number of megapixels for generated image. Use match_input to match the size of the input (with an upper limit of 1440x1440 pixels)

Default: "1"

1 0.25 match_input

num_inference_steps integer

Number of denoising steps. Recommended range is 28-50, and lower number of steps produce lower quality outputs, faster.

Default: 28 min: 1, max: 50

num_outputs integer

Number of outputs to generate

Default: 1 min: 1, max: 4

output_format string

Format of the output images

Default: "webp"

webp jpg png

output_quality integer

Quality when saving the output images, from 0 to 100. 100 is best quality, 0 is lowest quality. Not relevant for .png outputs

Default: 80 min: 0, max: 100

seed integer

Random seed. Set for reproducible generation

Version: aeb2a8dbfe25 Updated: 2/26/2026 208.7K runs