JPG Merger

This tool merges two or more JPEG images into a single JPEG file, enabling fast creation of collages, panoramas, or presentation-ready assets. It runs entirely in the browser and outputs a downloadable JPEG without requiring desktop software. Users retain control over layout while preserving image integrity, color space, and compression characteristics within the chosen quality setting.
Conceptually, the tool builds a final canvas according to a selected merge mode: horizontal, vertical, or grid. Each input image is placed on this canvas with optional padding and alignment. When dimensions differ, images are scaled to fit their cells while preserving aspect ratio, and padding areas can be filled with a solid color or left transparent if the final format permits. Grid mode supports layouts such as 2x2 and 3x1, with cell sizing calculated to accommodate all inputs without cropping.
Who benefits includes freelance photographers, product marketers, social content creators, and ecommerce teams needing clean composites quickly. The value lies in strict JPEG output, adjustable quality, and layout options that reduce manual editing. Typical use cases include side-by-side product comparisons, multi-image banners, hero tiles for websites, and compact galleries for slides or reports.
Core features include multiple merge modes, adjustable padding, optional background color for padding, and a configurable output quality from 1 to 100. The tool computes a final canvas, performs safe scaling, and yields a single JPEG file. It validates inputs (at least two JPGs) and reports failures with structured data. It intentionally excludes color correction, cropping beyond layout, or non-JPEG inputs to ensure predictable results.