Question 1

How do I resize an image with SwiftGD?

Accepted Answer

Use the resizedTo methods: resizedTo(width:height:) for exact dimensions, or resizedTo(width:) / resizedTo(height:) to maintain aspect ratio. An optional applySmoothing parameter controls bilinear filtering for smoother results.

Question 2

SwiftGD or Core Graphics for Linux Swift?

Accepted Answer

SwiftGD is the only viable option for server-side Swift on Linux since Core Graphics isn't available. For macOS or iOS, Core Graphics is more powerful, but SwiftGD bridges the gap for cross-platform server code.

Question 3

Does SwiftGD support WebP images?

Accepted Answer

No, SwiftGD only supports PNG and JPEG formats because it wraps libgd, which has limited format support. For WebP, you'd need to use additional libraries or convert images first.

Question 4

How to install SwiftGD on an Ubuntu server?

Accepted Answer

First, install libgd-dev with sudo apt-get install libgd-dev. Then, add SwiftGD as a dependency in your Package.swift file with the URL and version from the README, and include it in your target dependencies.

Question 5

Is SwiftGD thread-safe for concurrent image processing?

Accepted Answer

The README doesn't address thread-safety. Since it wraps libgd, which may not be thread-safe, it's recommended to handle concurrency carefully, such as using serial queues or isolating image operations to avoid issues.

Question 6

How to apply a Gaussian blur effect in SwiftGD?

Accepted Answer

Call the blur(radius:) method on an Image instance, specifying the radius for blur intensity. For example, image.blur(radius: 10) applies a strong blur, as shown in the concentric rectangles example code.

SwiftGD

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