Graphics tools and software

Graphics software creates, edits, displays and converts digital images. Such programs fall into two broad families based on how they store a picture. Raster (bitmap) graphics describe an image as a grid of coloured pixels, which suits photographs and detailed scenes but loses sharpness when enlarged. Vector graphics describe shapes mathematically as lines and curves, so they can be scaled to any size without losing quality, which suits logos, diagrams and technical drawings.

Bitmap editors let users paint, retouch and combine raster images, adjusting colour, brightness and contrast and working with layers and selections; the open-source GIMP is a well-known example. Vector editors such as Inkscape instead manipulate scalable shapes and are used for illustration and design. Specialised tools handle related tasks, including icon editors, screen-capture utilities and programs that produce technical drawings whose vector data may be exchanged in CAD formats such as DXF and DWG.

Beyond editing, two utility categories are very common. Image viewers open and browse pictures quickly, often supporting slideshows, basic cropping and thumbnail catalogues of a folder. Image converters translate between formats such as BMP, PNG, JPEG, GIF and TIFF, and often perform batch conversions or resizing across many files at once. The choice of format involves a trade-off: lossless formats like PNG preserve every pixel, while lossy formats like JPEG shrink files by discarding detail. Many of these graphics tools are distributed as freeware.

Frequently asked questions

What is the difference between raster and vector graphics?

Raster images are grids of pixels, good for photos but blurry when enlarged. Vector images are defined by mathematical shapes and scale to any size cleanly.

What does an image converter do?

It translates pictures between formats such as JPEG, PNG, BMP and TIFF, often resizing or processing many files in a single batch.

Which image format keeps the best quality?

Lossless formats such as PNG or TIFF preserve every pixel, while lossy formats like JPEG reduce file size by discarding some detail.