Online Image Editor

Purpose & User Intent: This tool provides a browser-based image editing workflow focused on non-destructive, layer-based editing for designers, photographers, marketing teams, and educators who need quick, high-fidelity edits without desktop software. It is used when creating promotional visuals, retouching assets, or producing mockups directly in the browser, enabling rapid iteration and collaboration. Core differentiators include instant access without installation, preservation of edit history, and export options that support common formats and project-like persistence for re-editing sessions.
Core Logic & Features: The tool treats edits as a layered composition with non-destructive adjustments and adjustable properties (opacity, blend modes, masks). Key features include layer stacking, selection tools, brush-based editing, adjustment layers (color, exposure), filters, and non-destructive history. It supports input in PNG/JPEG and outputs in PNG/JPEG and SVG, plus a native project format for session saving. Optional features include cloud sync, local caching, and batch export.
Inputs & Outputs: Inputs: image files (PNG/JPEG, optional TIFF), optional project/session file, export preferences (format, quality). Outputs: edited image (PNG/JPEG, SVG), and, if chosen, a layered project file for re-editing. Validation includes file type checks, size limits, and compatibility with export formats.
Algorithms & Calculations: Core operations rely on standard image processing techniques: alpha compositing (C_out = A*C_src + (1−A)*C_dst), color adjustments in linear RGB with gamma correction, and convolution-based filters. Blending modes follow conventional equations (e.g., normal, multiply, screen). Transform operations apply affine matrices for translation, rotation, and scale.
Error & Edge Cases: Large files may trigger memory limits; inputs with unsupported color spaces are converted to sRGB for editing. If an input is corrupted or missing, processing aborts gracefully with a neutral fallback. If cloud sync is unavailable, local session storage remains functional.
Industry/Region & Localization: Uses standard image formats and color spaces (sRGB) with no region-specific constraints. File export respects common pixel dimensions and DPI considerations for print or web usage.
Assumptions & Exclusions: Assumes a modern browser with WebGL/Canvas support for rendering and basic offline capability. Excludes desktop-only feature parity and branded UI messaging; no extraction of proprietary assets from external services.