ICDL Image Editing (ICDL) study plan

Distinguish raster from vector images and predict which format suits a given use case

Calculate image file size from pixel dimensions, bit depth, and number of channels

Compare resolution, PPI, and DPI and explain how each affects on-screen versus printed output

Classify color models (RGB, CMYK, grayscale, indexed) by typical use and conversion risks

Identify compression types (lossy versus lossless) and match them to common file formats

Select appropriate capture settings (resolution, format, white balance, ISO) for defined scenarios

Demonstrate scanning at correct PPI for print versus screen targets

Diagnose common capture faults such as blur, noise, and color cast from sample descriptions

Compute the pixel dimensions needed to print a given physical size at a target PPI

Organize captured files using a consistent naming and metadata convention

Crop and straighten images to correct framing and horizon errors

Resize images with and without resampling and state when each is appropriate

Set canvas size independently of image size and explain the difference

Record a repeatable capture-to-edit workflow for a single project

Evaluate before-and-after results against a written quality checklist

Build selections using marquee, lasso, magic wand, and quick-select tools

Create and organize layers, name them, and control opacity and blending modes

Apply layer masks to hide and reveal content non-destructively

Use adjustment layers to change tone and color without altering pixels

Arrange a layered composite that keeps every edit reversible

Correct exposure, contrast, and white balance using histogram feedback

Retouch blemishes and small defects with clone and healing tools

Apply sharpening and noise reduction at appropriate strengths

Transform, rotate, and warp objects while preserving proportions where required

Compare destructive versus non-destructive retouching approaches for a given task

Create new documents with dimensions, resolution, and color mode matched to the intended output

Draw and combine shapes, paths, and gradients to build a simple layout

Add and format text, including alignment, spacing, and layer styles

Assemble a composition using layer groups, guides, and alignment tools

Apply a reusable template or preset to speed up a repeatable design task

Select export formats and compression levels for web, email, and print delivery

Set resolution, dimensions, and color profile correctly for each output target

Preserve or strip metadata deliberately, including copyright information

Produce optimized exports that meet stated file-size limits without visible quality loss

Automate repetitive saving tasks with batch export or an action

Complete a timed full-length practice exam covering all five domains

Identify the three weakest objectives from practice results and re-study each

Redo missed item types until accuracy exceeds 85%

Summarize each domain in a personal one-page quick-reference sheet

Verify readiness against the full objective checklist