PhotoLine is a general purpose bitmap and vector graphics editor developed and published by Computerinsel GmbH for Windows, macOS, and Linux/Wine.

PhotoLine edits and composes multi-layer raster and vector images with deep support for masking and alpha compositing and with full color management.

PhotoLine incorporates the Open-source software library LibRaw to read raw images from digital cameras for import.

Core functionality of PhotoLine can be extended through standard Photoshop filter plugins, the G'MIC digital image processing framework,[2] and PSP tubes.

[3] External programs can be linked for a seamless round-trip workflow and files can be sent directly for processing in third-party design applications.

Previously, Gerhard and Martin had worked on making graphics cards for Atari computers and writing drivers for image scanners.

[4][5] Atari's market share was declining, and the brothers considered developing a video game to expand the business.

[4] This led them to search for image editing software that would run on Atari computers and fit their game project.

It contains a preview image in JPEG or PNG format, which is used by the operating system or third-party applications to display a thumbnail of its contents.

Alternatively, the FastPictureViewer Standalone Codec Pack provides the ability to display PLD thumbnails in Windows Explorer.