lucid-softworks

lucid-softworks/browser

A web browser written from scratch — a platform-agnostic Rust engine (networking, HTML/CSS parsing, DOM, style, layout, paint) with a thin native app shell per OS.

125 stars 9 forks 125 watchers Rust MIT License
appkit browser browser-engine css dom from-scratch html-parser layout-engine rendering-engine rust swift web-browser
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37 Open Issues Need Help Last updated: Jul 13, 2026

Open Issues Need Help

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Tracking: WPT conformance about 2 hours ago
help wanted
lucid-softworks/browser
125

A web browser written from scratch — a platform-agnostic Rust engine (networking, HTML/CSS parsing, DOM, style, layout, paint) with a thin native app shell per OS.

Rust
#appkit#browser#browser-engine#css#dom#from-scratch#html-parser#layout-engine#rendering-engine#rust#swift#web-browser
html/dom: document named-property getter + images/forms/embeds collections missing 13 days ago
bug help wanted claimed
lucid-softworks/browser
125

A web browser written from scratch — a platform-agnostic Rust engine (networking, HTML/CSS parsing, DOM, style, layout, paint) with a thin native app shell per OS.

Rust
#appkit#browser#browser-engine#css#dom#from-scratch#html-parser#layout-engine#rendering-engine#rust#swift#web-browser
dom: Node mutation methods throw TypeError instead of the spec DOMException (NotFoundError/HierarchyRequestError) 16 days ago
bug help wanted
lucid-softworks/browser
125

A web browser written from scratch — a platform-agnostic Rust engine (networking, HTML/CSS parsing, DOM, style, layout, paint) with a thin native app shell per OS.

Rust
#appkit#browser#browser-engine#css#dom#from-scratch#html-parser#layout-engine#rendering-engine#rust#swift#web-browser
css-grid: absolutely-positioned grid items are sized/placed incorrectly 18 days ago
bug help wanted claimed
lucid-softworks/browser
125

A web browser written from scratch — a platform-agnostic Rust engine (networking, HTML/CSS parsing, DOM, style, layout, paint) with a thin native app shell per OS.

Rust
#appkit#browser#browser-engine#css#dom#from-scratch#html-parser#layout-engine#rendering-engine#rust#swift#web-browser
css-text: computed-value serialization of css-text properties is wrong 21 days ago
bug help wanted
lucid-softworks/browser
125

A web browser written from scratch — a platform-agnostic Rust engine (networking, HTML/CSS parsing, DOM, style, layout, paint) with a thin native app shell per OS.

Rust
#appkit#browser#browser-engine#css#dom#from-scratch#html-parser#layout-engine#rendering-engine#rust#swift#web-browser
css: orthogonal / vertical writing-mode tests time out (layout does not terminate) 21 days ago
bug help wanted
lucid-softworks/browser
125

A web browser written from scratch — a platform-agnostic Rust engine (networking, HTML/CSS parsing, DOM, style, layout, paint) with a thin native app shell per OS.

Rust
#appkit#browser#browser-engine#css#dom#from-scratch#html-parser#layout-engine#rendering-engine#rust#swift#web-browser
css-sizing: contain-intrinsic-size is unsupported 21 days ago
enhancement help wanted
lucid-softworks/browser
125

A web browser written from scratch — a platform-agnostic Rust engine (networking, HTML/CSS parsing, DOM, style, layout, paint) with a thin native app shell per OS.

Rust
#appkit#browser#browser-engine#css#dom#from-scratch#html-parser#layout-engine#rendering-engine#rust#swift#web-browser
css-flexbox: flex / flex-basis computed-value serialization is not canonical 21 days ago
bug help wanted
lucid-softworks/browser
125

A web browser written from scratch — a platform-agnostic Rust engine (networking, HTML/CSS parsing, DOM, style, layout, paint) with a thin native app shell per OS.

Rust
#appkit#browser#browser-engine#css#dom#from-scratch#html-parser#layout-engine#rendering-engine#rust#swift#web-browser
css-tables: table/column width distribution computes 0 21 days ago
bug help wanted
lucid-softworks/browser
125

A web browser written from scratch — a platform-agnostic Rust engine (networking, HTML/CSS parsing, DOM, style, layout, paint) with a thin native app shell per OS.

Rust
#appkit#browser#browser-engine#css#dom#from-scratch#html-parser#layout-engine#rendering-engine#rust#swift#web-browser
css-position: the overlay property is unsupported 21 days ago
enhancement help wanted
lucid-softworks/browser
125

A web browser written from scratch — a platform-agnostic Rust engine (networking, HTML/CSS parsing, DOM, style, layout, paint) with a thin native app shell per OS.

Rust
#appkit#browser#browser-engine#css#dom#from-scratch#html-parser#layout-engine#rendering-engine#rust#swift#web-browser
css-sizing: aspect-ratio produces incorrect used sizes 21 days ago
bug help wanted
lucid-softworks/browser
125

A web browser written from scratch — a platform-agnostic Rust engine (networking, HTML/CSS parsing, DOM, style, layout, paint) with a thin native app shell per OS.

Rust
#appkit#browser#browser-engine#css#dom#from-scratch#html-parser#layout-engine#rendering-engine#rust#swift#web-browser
css-position: position: sticky offsets are not applied (resolve to 0) 21 days ago
bug help wanted
lucid-softworks/browser
125

A web browser written from scratch — a platform-agnostic Rust engine (networking, HTML/CSS parsing, DOM, style, layout, paint) with a thin native app shell per OS.

Rust
#appkit#browser#browser-engine#css#dom#from-scratch#html-parser#layout-engine#rendering-engine#rust#swift#web-browser
css-align: computed/specified value of align-content / justify-content is wrong 21 days ago
bug help wanted
lucid-softworks/browser
125

A web browser written from scratch — a platform-agnostic Rust engine (networking, HTML/CSS parsing, DOM, style, layout, paint) with a thin native app shell per OS.

Rust
#appkit#browser#browser-engine#css#dom#from-scratch#html-parser#layout-engine#rendering-engine#rust#swift#web-browser
css-align: computed value of align-self / justify-self is wrong (expanded form not serialized) 21 days ago
bug help wanted
lucid-softworks/browser
125

A web browser written from scratch — a platform-agnostic Rust engine (networking, HTML/CSS parsing, DOM, style, layout, paint) with a thin native app shell per OS.

Rust
#appkit#browser#browser-engine#css#dom#from-scratch#html-parser#layout-engine#rendering-engine#rust#swift#web-browser
css-align: computed value of align-items / justify-items is wrong (expanded form not serialized) 21 days ago
bug help wanted
lucid-softworks/browser
125

A web browser written from scratch — a platform-agnostic Rust engine (networking, HTML/CSS parsing, DOM, style, layout, paint) with a thin native app shell per OS.

Rust
#appkit#browser#browser-engine#css#dom#from-scratch#html-parser#layout-engine#rendering-engine#rust#swift#web-browser
layout: adjacent/through block margins do not collapse 21 days ago
bug help wanted
lucid-softworks/browser
125

A web browser written from scratch — a platform-agnostic Rust engine (networking, HTML/CSS parsing, DOM, style, layout, paint) with a thin native app shell per OS.

Rust
#appkit#browser#browser-engine#css#dom#from-scratch#html-parser#layout-engine#rendering-engine#rust#swift#web-browser
css-text: Selection.setBaseAndExtent() is unimplemented (throws TypeError) 21 days ago
bug good first issue
lucid-softworks/browser
125

A web browser written from scratch — a platform-agnostic Rust engine (networking, HTML/CSS parsing, DOM, style, layout, paint) with a thin native app shell per OS.

Rust
#appkit#browser#browser-engine#css#dom#from-scratch#html-parser#layout-engine#rendering-engine#rust#swift#web-browser
css-grid: computed grid-template-columns/rows serialization is incorrect — 874 WPT subtests 21 days ago
bug help wanted
lucid-softworks/browser
125

A web browser written from scratch — a platform-agnostic Rust engine (networking, HTML/CSS parsing, DOM, style, layout, paint) with a thin native app shell per OS.

Rust
#appkit#browser#browser-engine#css#dom#from-scratch#html-parser#layout-engine#rendering-engine#rust#swift#web-browser
css: Web Animations API (Element.animate / getAnimations) unimplemented — blocks ~2,800 WPT subtests 21 days ago
enhancement help wanted
lucid-softworks/browser
125

A web browser written from scratch — a platform-agnostic Rust engine (networking, HTML/CSS parsing, DOM, style, layout, paint) with a thin native app shell per OS.

Rust
#appkit#browser#browser-engine#css#dom#from-scratch#html-parser#layout-engine#rendering-engine#rust#swift#web-browser
engine: page content ignores the backing scale — everything renders at half size on Retina 21 days ago
bug help wanted claimed
lucid-softworks/browser
125

A web browser written from scratch — a platform-agnostic Rust engine (networking, HTML/CSS parsing, DOM, style, layout, paint) with a thin native app shell per OS.

Rust
#appkit#browser#browser-engine#css#dom#from-scratch#html-parser#layout-engine#rendering-engine#rust#swift#web-browser
dom: DocumentFragment.prototype.getElementById() is missing 21 days ago
bug good first issue claimed
lucid-softworks/browser
125

A web browser written from scratch — a platform-agnostic Rust engine (networking, HTML/CSS parsing, DOM, style, layout, paint) with a thin native app shell per OS.

Rust
#appkit#browser#browser-engine#css#dom#from-scratch#html-parser#layout-engine#rendering-engine#rust#swift#web-browser
html/dom: location/USVString reflection doesn't replace unpaired surrogates with U+FFFD 21 days ago
bug help wanted claimed
lucid-softworks/browser
125

A web browser written from scratch — a platform-agnostic Rust engine (networking, HTML/CSS parsing, DOM, style, layout, paint) with a thin native app shell per OS.

Rust
#appkit#browser#browser-engine#css#dom#from-scratch#html-parser#layout-engine#rendering-engine#rust#swift#web-browser
html/dom: document.body returns a synthetic body for childless documents 21 days ago
bug good first issue claimed
lucid-softworks/browser
125

A web browser written from scratch — a platform-agnostic Rust engine (networking, HTML/CSS parsing, DOM, style, layout, paint) with a thin native app shell per OS.

Rust
#appkit#browser#browser-engine#css#dom#from-scratch#html-parser#layout-engine#rendering-engine#rust#swift#web-browser
wpt-runner: adopt the real `wpt serve` instead of the hand-rolled static server (unblocks fetch/service-workers infra failures) 21 days ago
enhancement help wanted claimed
lucid-softworks/browser
125

A web browser written from scratch — a platform-agnostic Rust engine (networking, HTML/CSS parsing, DOM, style, layout, paint) with a thin native app shell per OS.

Rust
#appkit#browser#browser-engine#css#dom#from-scratch#html-parser#layout-engine#rendering-engine#rust#swift#web-browser
dom: Node.prototype.baseURI getter is unimplemented (reads undefined) 21 days ago
bug help wanted
lucid-softworks/browser
125

A web browser written from scratch — a platform-agnostic Rust engine (networking, HTML/CSS parsing, DOM, style, layout, paint) with a thin native app shell per OS.

Rust
#appkit#browser#browser-engine#css#dom#from-scratch#html-parser#layout-engine#rendering-engine#rust#swift#web-browser
dom: Node.prototype.normalize() is unimplemented 21 days ago
bug help wanted
lucid-softworks/browser
125

A web browser written from scratch — a platform-agnostic Rust engine (networking, HTML/CSS parsing, DOM, style, layout, paint) with a thin native app shell per OS.

Rust
#appkit#browser#browser-engine#css#dom#from-scratch#html-parser#layout-engine#rendering-engine#rust#swift#web-browser
dom: Node.prototype.isConnected getter is unimplemented (reads undefined) 21 days ago
bug good first issue
lucid-softworks/browser
125

A web browser written from scratch — a platform-agnostic Rust engine (networking, HTML/CSS parsing, DOM, style, layout, paint) with a thin native app shell per OS.

Rust
#appkit#browser#browser-engine#css#dom#from-scratch#html-parser#layout-engine#rendering-engine#rust#swift#web-browser
dom: Element.prototype.hasAttributes() is unimplemented 21 days ago
bug good first issue
lucid-softworks/browser
125

A web browser written from scratch — a platform-agnostic Rust engine (networking, HTML/CSS parsing, DOM, style, layout, paint) with a thin native app shell per OS.

Rust
#appkit#browser#browser-engine#css#dom#from-scratch#html-parser#layout-engine#rendering-engine#rust#swift#web-browser
dom: Node.prototype.isSameNode() is unimplemented 21 days ago
bug good first issue
lucid-softworks/browser
125

A web browser written from scratch — a platform-agnostic Rust engine (networking, HTML/CSS parsing, DOM, style, layout, paint) with a thin native app shell per OS.

Rust
#appkit#browser#browser-engine#css#dom#from-scratch#html-parser#layout-engine#rendering-engine#rust#swift#web-browser
dom: StaticRange constructor doesn't populate boundary properties 21 days ago
bug good first issue claimed
lucid-softworks/browser
125

A web browser written from scratch — a platform-agnostic Rust engine (networking, HTML/CSS parsing, DOM, style, layout, paint) with a thin native app shell per OS.

Rust
#appkit#browser#browser-engine#css#dom#from-scratch#html-parser#layout-engine#rendering-engine#rust#swift#web-browser
html/dom: a/area.username and .password are hardcoded to "" instead of reflecting the URL 21 days ago
bug good first issue
lucid-softworks/browser
125

A web browser written from scratch — a platform-agnostic Rust engine (networking, HTML/CSS parsing, DOM, style, layout, paint) with a thin native app shell per OS.

Rust
#appkit#browser#browser-engine#css#dom#from-scratch#html-parser#layout-engine#rendering-engine#rust#swift#web-browser
service-workers: Service Worker API is entirely unimplemented (navigator.serviceWorker undefined) 22 days ago
bug help wanted claimed
lucid-softworks/browser
125

A web browser written from scratch — a platform-agnostic Rust engine (networking, HTML/CSS parsing, DOM, style, layout, paint) with a thin native app shell per OS.

Rust
#appkit#browser#browser-engine#css#dom#from-scratch#html-parser#layout-engine#rendering-engine#rust#swift#web-browser
dom: ParentNode.childElementCount is unimplemented 22 days ago
bug good first issue
lucid-softworks/browser
125

A web browser written from scratch — a platform-agnostic Rust engine (networking, HTML/CSS parsing, DOM, style, layout, paint) with a thin native app shell per OS.

Rust
#appkit#browser#browser-engine#css#dom#from-scratch#html-parser#layout-engine#rendering-engine#rust#swift#web-browser
dom: dispatchEvent(null) should throw TypeError and dispatchEvent must return a boolean 22 days ago
bug help wanted claimed
lucid-softworks/browser
125

A web browser written from scratch — a platform-agnostic Rust engine (networking, HTML/CSS parsing, DOM, style, layout, paint) with a thin native app shell per OS.

Rust
#appkit#browser#browser-engine#css#dom#from-scratch#html-parser#layout-engine#rendering-engine#rust#swift#web-browser
dom: toggleAttribute() throws on attributes it should handle 22 days ago
bug good first issue
lucid-softworks/browser
125

A web browser written from scratch — a platform-agnostic Rust engine (networking, HTML/CSS parsing, DOM, style, layout, paint) with a thin native app shell per OS.

Rust
#appkit#browser#browser-engine#css#dom#from-scratch#html-parser#layout-engine#rendering-engine#rust#swift#web-browser
dom: WebKit-prefixed event handler aliases (onwebkitanimationstart, etc.) are missing 22 days ago
bug good first issue
lucid-softworks/browser
125

A web browser written from scratch — a platform-agnostic Rust engine (networking, HTML/CSS parsing, DOM, style, layout, paint) with a thin native app shell per OS.

Rust
#appkit#browser#browser-engine#css#dom#from-scratch#html-parser#layout-engine#rendering-engine#rust#swift#web-browser
dom: Text/Comment constructors don't initialize data to "" 22 days ago
bug good first issue
lucid-softworks/browser
125

A web browser written from scratch — a platform-agnostic Rust engine (networking, HTML/CSS parsing, DOM, style, layout, paint) with a thin native app shell per OS.

Rust
#appkit#browser#browser-engine#css#dom#from-scratch#html-parser#layout-engine#rendering-engine#rust#swift#web-browser