        
        SWIFT · NATIVE iOS · ZERO DEPENDENCIES
      

The featherweight
SVG renderer
for iOS.

ThinPath renders vector graphics with a flat arena architecture and zero allocation overhead — so your image-heavy app stays fast and your memory footprint stays tiny.

Install ThinPath View on GitHub ↗

// Swift Package Manager · iOS 13+ · MIT

FLAT ARENA ~1 alloc

        
        nodes packed contiguously — cache-dense traversal
      

        
        free slots — released in one instant
      

Renders what you draw.

// full SVG feature coverage

01

Shapes & Paths

Rect, circle, ellipse, line, polyline, polygon, and full path data including elliptical arcs.

02

Transforms

Translate, scale, rotate, skew, and nested matrix stacks — resolved on the flat tree.

03

Gradients & Patterns

Linear and radial gradients with stops and spread methods, plus pattern fills tiled via CGPattern.

04

Masks & Clips

Clip paths and alpha masks, with scratch surfaces clamped to the masked element's own bounds.

05

Text

Positioned text runs with prioritized font-family lookup and guaranteed system-font fallback.

06

Images

Embedded and local-file raster images, decoded at the target's device-pixel size — never upscaled past native resolution.

Why ThinPath

Built for developers who count allocations and measure frames.

~1 alloc

Memory efficient

The entire document tree lives in a handful of contiguous arrays. No per-node heap churn, no fragmentation.

0 deps

Pure Swift, native

No C++, no bridging, no third-party libraries. Drops into any iOS target with Swift Package Manager.

cache-dense

Fast traversal

Nodes are packed sequentially, so tree walks stay in cache instead of chasing pointers across the heap.

instant

Immediate release

When rendering finishes the arena's arrays are freed directly — no recursive teardown proportional to node count.

Up and running in a few lines.

Add the package, import the module, parse and render. No configuration, no bridging headers, no C++ toolchain.

          .package(url: "https://github.com/sohandotgit/ThinPath.git", branch: "main")
        

ContentView.swift

import ThinPath

let svgData = try Data(contentsOf: iconURL)
let (document, errors) = parse(data: svgData)

let renderer = ThinPath()
if let image = renderer.render(
    document,
    size: CGSize(width: 64, height: 64),
    scale: 2
) // CGImage? — arena freed once `document` drops