An NSURL extension for Swift that fetches webpage preview metadata (title, description, image) like Facebook link previews.
URLPreview is an NSURL extension for Swift that fetches webpage metadata including title, description, and preview images. It solves the problem of displaying rich link previews in iOS and macOS applications, similar to how social media platforms show previews when URLs are shared.
iOS and macOS developers building apps that need to display webpage previews, such as social apps, news readers, or any application where users share or view links.
Developers choose URLPreview because it provides a simple, focused API for fetching webpage metadata without requiring complex HTML parsing logic, and it mimics the familiar Facebook-style link preview behavior.
An NSURL extension for showing preview info of webpages
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The API uses a completion block that requires minimal code to add metadata fetching, as shown in the straightforward usage example with just a URL and callbacks.
It specifically targets fetching title, description, and preview image to mimic Facebook-style previews, avoiding feature bloat for common use cases.
Provides failure callbacks for invalid URLs and network issues, ensuring robust error management without additional setup.
As a minimal NSURL extension, it keeps the codebase clean and easy to maintain, focusing solely on metadata extraction.
Relies on the Kanna library for HTML parsing, which adds an external dependency that may complicate updates or increase app size.
Only extracts basic title, description, and image; developers needing additional Open Graph tags or structured data must extend the functionality themselves.
All fetching is done on the client, which can lead to performance issues in data-heavy apps and may not handle CORS or network restrictions effectively.