n8n Workflow: Image Enlargement & Crop Calculator (CSV Export)

Plan Upscaling, Predict Crop Loss, and Export a CSV—All from an n8n Workflow

If you’re preparing images for print and need reliable enlargement settings, this n8n Workflow: Image Enlargement & Crop Calculator (CSV Export) calculates target pixel dimensions for your chosen print sizes, recommends the best allowed enlargement factor, estimates crop loss from aspect-ratio differences, and then exports everything as a downloadable CSV.

What this workflow does

• Runs on manual execution: Start the workflow whenever you’re ready to calculate a batch plan.
• Loads your inputs: Provide image metadata (pixel width/height, desired print width/height in centimeters), plus a target DPI and the comma-separated list of allowed enlargement scales you can actually use.
• Computes target pixel dimensions: For each print size, it calculates the pixel target and the scale required to fill the target area.
• Selects a compliant enlargement factor: It picks the smallest allowed enlargement factor that meets the requirement.
• Estimates crop loss: Based on the difference between source and print aspect ratios, it flags the percentage of content likely to be cropped.
• Flags unsupported upscales: Images exceeding your configured enlargement options are marked for review.
• Exports a downloadable plan: Generates a CSV report and outputs it as a downloadable binary file.

Use cases

• Print operators sizing artwork to specific physical dimensions while avoiding unnecessary upscaling.
• Studios using Upscayl (or similar tools) and needing a pre-check to prevent wasted runs.
• Automation engineers creating a repeatable workflow from image specs → enlargement recommendation → crop risk → CSV handoff.

Technical details

• n8n nodes used: set, code, sticky note, manual trigger.
• Outputs: A CSV report delivered via the final step’s binary output.
• Setup steps: Update the image list (widthPx, heightPx, printWidthCm, printHeightCm), set targetDpi, and define availableScales. Download the CSV and review crop-loss % and scale exceedances before processing.

Work in tandem with Upscayl by using the exported plan directly, or adapt the CSV for your own enlargement pipeline.