December 5, 2025
Bring your popcorn, devs
We Built Lightpanda in Zig
Founder picks Zig for “simplicity,” comments erupt into Rust vs security smackdown
TLDR: Lightpanda picked Zig for a simpler, high-performance path to building a web automation browser, bridging [V8](https://v8.dev) via C tools. The comments ignited: some say language choice doesn’t matter, others roast Rust’s complexity, while security skeptics worry Zig’s manual memory could bite. It’s pragmatism vs purism.
Lightpanda’s CEO just dropped a spicy confession: they built their automation-focused web browser in Zig because they’re “not smart enough” for C++ or Rust. Cue the crowd going full popcorn mode. Fans cheered the simple, fast vibe, pointing to Zig’s “keep it simple” philosophy and its easy bridge to Chrome’s V8 engine via C headers. Others flexed receipts that Zig is getting real love thanks to projects like Ghostty, TigerBeetle, and Bun joining Anthropic orbit.
But the comments quickly turned into a culture war. One camp insisted end users don’t care what language you use if the product slaps. Another camp, led by the “too-old-and-stupid-for-Rust” memes, argued Rust’s safety rules (the “borrow checker,” aka strict memory safety) feel like homework you can’t finish. Security hawks swooped in asking how manual memory management in Zig doesn’t turn a public service into a bug bazaar. Then a wildcard: the AI crowd dreaming of Lightpanda feeding a local, private assistant that curates the web and nukes spam—no extensions, just filtered bliss.
Verdict? It’s Zig’s pragmatism vs Rust’s pride, with a dash of “language doesn’t matter” and a side of AI wishcasting. The browser isn’t even the headline—the comments are.
Key Points
- •Lightpanda is building its web automation browser in Zig for performance, simplicity, and modern tooling.
- •Zig features leveraged include comptime metaprogramming, explicit memory allocators, and strong C interoperability.
- •The browser uses the V8 JavaScript engine; integration is achieved via C headers generated from rusty_v8 to bridge V8’s C++ API to Zig.
- •C++ and Rust were considered but not chosen; Go was ruled out due to low-level performance needs and C was set aside for safety/tooling reasons.
- •Despite Zig’s pre-1.0 status and small ecosystem, Lightpanda remains bullish, noting other Zig-based projects and industry attention including Anthropic’s acquisition of Bun.