What Are Low-Resolution Raster Images

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In the world of digital graphics and design, the ability to convert raster images to other formats—especially vector formats—is invaluable. Raster images, composed of pixels, are resolution-dependent, meaning their quality hinges on how many pixels they contain. Low-resolution raster images, however, pose a unique challenge. So, the question arises: Can you convert low-res raster images? The short answer is yes, but with important caveats and considerations.

This article explores what low-resolution raster images are, the challenges involved in converting them, the best methods to improve conversion outcomes, and practical tips for working with such images.

Raster images are pixel-based images, such as JPEG, PNG, BMP, or GIF files. The resolution of a raster image is measured in pixels per inch (PPI) or dots per inch (DPI), indicating the number of pixels within an inch of the image.

A low-resolution raster image typically has a raster to vector conversion service resolution below 300 PPI. Common low-resolution images may have 72 or 96 PPI, which is often sufficient for screen display but inadequate for detailed printing or high-quality conversions.

Low resolution means fewer pixels, which can result in:

Pixelation (blocky or blurry appearance)

Loss of detail

Jagged or unclear edges

Color distortion

These issues make converting low-res images into cleaner, scalable formats more difficult.

Why Convert Raster Images?
Before diving into the challenges of low-res images, it helps to understand why conversion is important. Common reasons include:

Vectorization: Turning raster images into vector graphics (like SVG, AI, or EPS), which are resolution-independent and scalable without loss of quality.

Printing: High-quality prints require images with sufficient resolution to avoid blurriness.

Design edits: Vector files allow for easier editing of shapes and colors.

Logo reproduction: Logos and line art often need vector formats for sharpness and scalability.