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Documentation Index

Fetch the complete documentation index at: https://docs.opencanva.co/llms.txt

Use this file to discover all available pages before exploring further.

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Overview

Open Canva exposes a focused set of controls so you can generate quickly without tuning low-level parameters. The app automatically handles backend defaults like inference steps and guidance; you only manage the settings below.

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Model selection

  • Choose up to four models per request. One image (or video) is produced per selected model.
  • All selected models share the same prompt and aspect ratio.
  • Models that don’t support your selected aspect ratio are automatically grayed out.
  • Switch between the Image and Video tabs to access different model categories.
Start with a single model, then add more to compare results side by side within the same batch.

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Aspect ratio

The aspect ratio picker maps to supported image sizes for each model. Open Canva supports 18 aspect ratios organized by orientation:

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Landscape

Aspect ratioCommon use
16:9Widescreen, presentations, social media banners
4:3Standard landscape, product photos
3:2Photography standard, print
5:4Social media posts
21:9Ultra-wide, cinematic
2:1Panoramic

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Portrait

Aspect ratioCommon use
9:16Mobile, Stories, Reels, TikTok
3:4Standard portrait
2:3Photography portrait, print
4:5Instagram portrait

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Square

Aspect ratioCommon use
1:1Social media posts, profile images
The default aspect ratio is 16:9 landscape. The UI maps your selection to the optimal resolution for each selected model — no manual dimension entry required.

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Resolution tiers

Images are generated at resolution tiers (0.5K, 1K, 2K, 4K) depending on the model and your plan’s upscale limits:
PlanMax upscale resolution
Starter2K
Pro8K
Max22K
Enterprise22K

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Number of images

Some models support generating multiple images per request. The number selector adjusts based on the selected model’s capabilities.

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Reference images

  • Upload up to 5 reference images per session and reuse them across prompts.
  • Attach up to 3 references per generation request to guide results.
  • Uploaded references appear in the References panel; toggle selections before running a prompt.
  • References can also be uploaded across sessions for reuse in any project.

Reference Images Guide

Learn how reference images guide AI output.

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Prompt enhancement

  • Use the Enhance action to expand or refine your prompt before generating.
  • Enhanced text can be kept in sync with the editor or discarded at any time.
  • For deeper prompt planning, use the Prompt Assistant.

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What isn’t configurable

Some parameters are handled automatically and are not exposed in the UI:
  • Inference steps and guidance scale
  • Seed selection
  • Negative prompts or style presets
This keeps the interface streamlined while enforcing safe defaults and model-specific requirements.

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Settings reference

SettingPurposeNotes
ModelsWhich engines run1-4 models per request; one output per model
Aspect ratioComposition and size18 ratios mapped to model-supported dimensions
Number of imagesOutput countModel-dependent availability
Reference imagesGuide style/contentUp to 3 per run; reuse uploads across sessions
Prompt enhancementImprove prompt qualityOptional helper before generation

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Troubleshooting settings

The model doesn’t support your selected aspect ratio. Change the aspect ratio or select a different model.
  • Try a higher-quality model (e.g., Flux 2 Max instead of Flux Schnell)
  • Check if your plan supports higher upscale resolutions
  • Make your prompt more detailed and specific
  • Premium models take longer than fast models
  • Video generation is slower than image generation
  • Check your concurrent job limit (varies by plan)

AI Models

Browse all available models and their strengths.

Writing Prompts

Combine effective prompts with the right settings.

Reference Images

Upload reference images to guide output.

Plans & Pricing

See resolution limits and features by plan.