Aspose.HTML FOSS for Python

API reference for Aspose.Html FOSS for Python v0.1.0. 243 public types organized by module.

Core API

Class	Description
`HTMLDocument`	Top-level entry point for parsing HTML into a Document tree.

Css

Class	Description
`AttributeSelector`	Matches elements by attribute presence or value.
`ClassSelector`	Matches elements whose class_list contains class_name: `.foo`.
`ComplexNotPseudoClass`	Matches elements that do NOT match any selector in the argument list.
`ComplexSelector`	A chain of CompoundSelectors joined by Combinators.
`CompoundSelector`	A sequence of simple selectors that all apply to the same element.
`HasPseudoClass`	Matches elements that have at least one relative match in their subtree.
`IsPseudoClass`	Matches elements that match any selector in a forgiving selector list.
`NthArgument`	Parsed An+B argument for :nth-child and related pseudo-classes.
`NthFilteredChildPseudoClass`	Matches elements at An+B position among siblings filtered by a selector.
`PseudoClassSelector`	A pseudo-class selector.
`SelectorList`	The root AST node.
`TypeSelector`	Matches elements by tag name: `div`.
`UniversalSelector`	Matches any element: `*`.
`WherePseudoClass`	Identical matching semantics to IsPseudoClass; always contributes 0 specificity.

Enumerations

Enumeration	Description
`AttributeOperator`	Attribute selector operator types (CSS Selectors Level 3).
`Combinator`	Selector combinator types (CSS Selectors Level 3).

Cssom

Class	Description
`CSS`	Namespace class for CSS static utilities (CSS Conditional Rules §6).
`CSSCounterStyleRule`	A `@counter-style` rule (CSS Counter Styles Level 3 §3, CSSOM §5.4 type 11).
`CSSDeclarationBlock`	A small CSSStyleDeclaration-compatible declaration container.
`CSSFontFaceRule`	A `@font-face` rule holding font descriptor declarations (CSS Fonts §4.4).
`CSSImportRule`	An `@import` statement rule (CSSOM §6.7).
`CSSKeyframeRule`	A single keyframe descriptor within a `@keyframes` rule (CSSOM Animations §7).
`CSSKeyframesRule`	A `@keyframes` rule containing animation keyframe descriptors (CSSOM Animations §7).
`CSSLayerBlockRule`	A CSS `@layer` block rule assigning child rules to a named cascade layer.
`CSSLayerStatementRule`	A CSS `@layer` statement rule declaring cascade layer order.
`CSSMediaRule`	Media rule scaffold for nested style rules.
`CSSNamespaceRule`	A `@namespace` rule (CSSOM §6.6, type 10).
`CSSPageRule`	CSS `@page` rule (CSSOM §6.4).
`CSSPropertyRule`	CSS `@property` rule stub (CSS Properties and Values API §3).
`CSSRule`	Base class for CSSOM rules.
`CSSRuleList`	Ordered, live CSS rule collection.
`CSSStyleRule`	Style rule (`selector { declarations }`).
`CSSStyleSheet`	Minimal CSSOM stylesheet object (CSSOM §6.4).
`CSSSupportsRule`	A `@supports` rule with a condition and nested style rules (CSS Conditional Rules §2).

Dom

Class	Description
`AbortController`	Controls cancellation of operations via an :class:`AbortSignal`.
`AbortSignal`	Represents the signal half of an AbortController pair.
`AbstractRange`	Read-only boundary-point contract shared by range-family APIs.
`Attr`	An attribute attached to an Element.
`BarProp`	Represents a browser toolbar object (WHATWG HTML §7.7.3).
`BroadcastChannel`	Deterministic same-runtime BroadcastChannel fan-out delivery.
`BrowsingContext`	Internal owner of navigation lifecycle/document state.
`CDATASection`	A CDATA section node (extends Text per WHATWG DOM Standard).
`CSSStyleDeclaration`	A live view of an element’s inline style attribute.
`CharacterData`	Abstract base for Text, Comment, CDATASection, and ProcessingInstruction.
`Comment`	An HTML comment node.
`ComputedStyleDeclaration`	Read-only resolved style declarations for an element.
`Console`	Class with 6 methods.
`Crypto`	Minimal stub for the Crypto interface (W3C Web Crypto API §10.1).
`CustomElementRegistry`	Class with 6 methods.
`CustomEvent`	An Event carrying an arbitrary detail payload.
`DOMConfiguration`	Baseline DOMConfiguration compatibility surface.
`DOMException`	Base for all DOM exceptions.
`DOMImplementation`	Legacy DOMImplementation compatibility surface.
`DOMParser`	Parse markup strings into DOM documents.
`DOMRect`	An axis-aligned bounding rectangle (CSSOM View §7.1).
`DOMRectList`	An immutable sequence of :class:`DOMRect` objects (CSSOM View §7.2).
`DOMStringMap`	A live dict-like view of an element’s `data-*` custom attributes.
`DOMTokenList`	A live, mutable set of space-separated tokens backed by an element attribute.
`DataCloneError`	Raised when a value cannot be serialized by the structured clone algorithm.
`Document`	The root of a DOM tree.
`DocumentFragment`	A lightweight container for a sub-tree.
`DocumentPosition`	Named constants for the bitmask returned by `Node.compare_document_position`.
`DocumentType`	A document type declaration node (````).
`Element`	An HTML or XML element node.
`ErrorEvent`	Script error event (WHATWG HTML §8.1.3.6).
`Event`	A DOM event object per WHATWG DOM §2.2.
`EventTarget`	Base class for objects that can receive DOM events.
`FocusEvent`	Focus transition event (WHATWG UI Events §5.4).
`FormData`	Snapshot collection of form control name/value pairs.
`HTMLAddressElement`	HTML ```` element.
`HTMLAnchorElement`	HTML ```` anchor element.
`HTMLAreaElement`	HTML ```` image-map hyperlink area.
`HTMLArticleElement`	HTML ```` element.
`HTMLAsideElement`	HTML ```` element.
`HTMLAudioElement`	HTML ```` element.
`HTMLBRElement`	HTML ```` line-break element (structural subclass).
`HTMLBaseElement`	HTML ```` element.
`HTMLBodyElement`	HTML ```` element (structural subclass).
`HTMLButtonElement`	HTML ```` element.
`HTMLCanvasElement`	HTML ```` element.
`HTMLCollection`	A live, ordered collection of Element-type children only.
`HTMLDListElement`	HTML ```` definition list element.
`HTMLDataElement`	HTML ```` element.
`HTMLDataListElement`	HTML ```` element providing autocomplete suggestions.
`HTMLDetailsElement`	HTML ```` disclosure widget element.
`HTMLDialogElement`	HTML ```` modal/non-modal dialog element.
`HTMLDivElement`	HTML ```` block container element.
`HTMLElement`	Base class for all HTML-namespace element types.
`HTMLEmbedElement`	HTML ```` element.
`HTMLFieldSetElement`	HTML ```` element for grouping form controls.
`HTMLFigCaptionElement`	HTML ```` element.
`HTMLFigureElement`	HTML ```` element.
`HTMLFooterElement`	HTML ```` element.
`HTMLFormElement`	HTML ```` element.
`HTMLHRElement`	HTML ```` thematic-break element (structural subclass).
`HTMLHeadElement`	HTML ```` element (structural subclass).
`HTMLHeaderElement`	HTML ```` element.
`HTMLHeadingElement`	HTML heading element — covers `through`.
`HTMLHtmlElement`	HTML ```` document element (structural subclass).
`HTMLIFrameElement`	HTML ```` element.
`HTMLImageElement`	HTML ```` image element.
`HTMLInputElement`	HTML ```` form control element.
`HTMLLIElement`	HTML ```` list item element.
`HTMLLabelElement`	HTML ```` element.
`HTMLLegendElement`	HTML ```` element (WHATWG §4.10.4).
`HTMLLinkElement`	HTML ```` element.
`HTMLMainElement`	HTML ```` element.
`HTMLMapElement`	HTML ```` element.
`HTMLMarkElement`	HTML ```` element.
`HTMLMediaElement`	Base class for HTML media elements (`/`).
`HTMLMenuElement`	Represents an HTML ```` element.
`HTMLMetaElement`	HTML ```` element.
`HTMLMeterElement`	HTML ```` element for displaying a scalar value in a range.
`HTMLModElement`	HTML `/` modification element.
`HTMLNavElement`	HTML ```` element.
`HTMLNoScriptElement`	HTML ```` element.
`HTMLOListElement`	HTML ```` ordered list element.
`HTMLObjectElement`	HTML ```` element.
`HTMLOptGroupElement`	HTML ```` element for grouping options in a select list.
`HTMLOptionElement`	HTML ```` element representing a choice in a select list.
`HTMLOptionsCollection`	Live collection of `elements for a`.
`HTMLOutputElement`	HTML ```` element for displaying calculation results.
`HTMLParagraphElement`	HTML ```` paragraph element.
`HTMLParamElement`	HTML ```` element.
`HTMLPictureElement`	HTML ```` element (structural subclass).
`HTMLPreElement`	HTML ```` preformatted text element (structural subclass).
`HTMLProgressElement`	HTML ```` element showing task completion.
`HTMLQuoteElement`	HTML `/` quote element.
`HTMLRubyElement`	HTML `/`/```` element.
`HTMLScriptElement`	HTML ```` element.
`HTMLSectionElement`	HTML ```` element.
`HTMLSelectElement`	HTML ```` element.
`HTMLSmallElement`	HTML ```` element.
`HTMLSourceElement`	HTML ```` element.
`HTMLSpanElement`	HTML ```` inline container element.
`HTMLStyleElement`	HTML ```` element.
`HTMLSummaryElement`	Represents an HTML ```` element.
`HTMLTableCaptionElement`	HTML ```` element.
`HTMLTableCellElement`	HTML `or` element.
`HTMLTableColElement`	HTML `or` element.
`HTMLTableElement`	HTML ```` element.
`HTMLTableRowElement`	HTML ```` element.
`HTMLTableSectionElement`	HTML `,` , or ```` element.
`HTMLTemplateElement`	HTML ```` element holding inert content.
`HTMLTextAreaElement`	HTML ```` multi-line text input element.
`HTMLTimeElement`	HTML ```` element.
`HTMLTitleElement`	HTML ```` element.
`HTMLTrackElement`	HTML ```` element.
`HTMLUListElement`	HTML ```` unordered list element.
`HTMLUnknownElement`	HTML unknown element interface (export-only, not registry-dispatched).
`HTMLVideoElement`	HTML ```` element.
`HTMLWBRElement`	HTML ```` element.
`HashChangeEvent`	Same-document fragment navigation event.
`HierarchyRequestError`	Raised when the tree hierarchy is violated.
`History`	In-memory session history for a Window.
`InUseAttributeError`	Raised when an Attr is already in use by another element.
`IndexSizeError`	Raised when an index or size is out of range.
`InputEvent`	Text-input event (WHATWG Input Events Level 2 / WHATWG UI Events §5.6).
`IntersectionObserver`	Headless IntersectionObserver API-shape stub.
`IntersectionObserverEntry`	Headless IntersectionObserver entry stub.
`InvalidCharacterError`	Raised when an invalid character is used.
`InvalidStateError`	Raised when an operation is performed in an invalid state.
`KeyboardEvent`	Keyboard event (WHATWG UI Events §5.3).
`Location`	Class with 4 methods and 8 properties.
`MediaQueryList`	MediaQueryList returned by :meth:`Window.match_media`.
`MessageChannel`	Pair of linked :class:`MessagePort` endpoints.
`MessagePort`	Deterministic same-runtime MessagePort queue baseline.
`MouseEvent`	Mouse or pointer event (WHATWG UI Events §5.2).
`MutationObserver`	Observe DOM mutations on a target node.
`MutationRecord`	One DOM mutation notification record.
`NamedNodeMap`	An ordered map of Attr objects keyed by attribute name.
`Navigator`	Class with 7 methods and 40 properties.
`NoModificationAllowedError`	Raised when a node cannot be modified in its current context.
`Node`	Abstract base class for all WHATWG DOM nodes.
`NodeFilter`	Constants for TreeWalker and NodeIterator filtering.
`NodeIterator`	Flat, stateful iteration over DOM nodes matching a filter.
`NodeList`	A live, ordered collection of Node objects.
`NodeType`	Integer constants for the `node_type` property of DOM nodes.
`NotFoundError`	Raised when a node is not found in the expected location.
`NotSupportedError`	Raised when an operation is not supported.
`ParseError`	A parse error recorded during tree construction.
`Performance`	Minimal stub for the Performance interface.
`PerformanceEntry`	A single performance timeline entry.
`PerformanceTiming`	Legacy Navigation Timing Level 1 interface stub.
`PopStateEvent`	History traversal event carrying the active entry state.
`ProcessingInstruction`	A processing instruction node (e.g.
`Range`	A contiguous portion of a document tree (WHATWG DOM §5).
`ResizeObserver`	Headless ResizeObserver API-shape stub.
`ResizeObserverEntry`	Headless ResizeObserver entry stub.
`Screen`	Browser screen geometry — all values are stubs (server-side context).
`SecurityError`	Raised when an operation is blocked for security reasons.
`Selection`	Document-scoped selection with single-range semantics.
`StaticRange`	Immutable boundary-point range initialized from an init object.
`Storage`	Key-value store implementing the WHATWG HTML §12 Storage interface.
`StyleSheetList`	Live ordered stylesheet collection.
`SubtleCrypto`	Stub for the SubtleCrypto interface (W3C Web Crypto API §10).
`SyntaxError`	Raised when a string does not match the expected pattern or grammar.
`Text`	A text node.
`TreeWalker`	Cursor-style DOM traversal bounded to a root subtree.
`UIEvent`	Base class for user-interface events (WHATWG UI Events §5.1).
`ValidityState`	Constraint-validation flags for a form control.
`VisualViewport`	CSSOM View §9 VisualViewport — all values are headless stubs.
`Window`	Per-document window object with EventTarget behavior.
`WindowEventLoop`	Internal task-source scheduler used by `Window`/`BrowsingContext`.
`WrongDocumentError`	Raised when a node belongs to a different document.
`XMLSerializer`	Serialise DOM nodes to strings.

Encoding

Class	Description
`EncodingDetectionResult`	Result of encoding detection and decoding for an HTML byte stream.
`UnsupportedEncodingError`	Raised when the detected encoding has no Python codec.

Js

Class	Description
`JSContext`	A JavaScript execution context backed by QuickJS, pre-wired to a DOM.
`JSEvaluationError`	Raised when a JavaScript expression throws an exception.
`ModuleLoadPolicy`	Constants governing how a JSContext resolves module specifiers.
`ModuleNotFoundError`	Raised when a module specifier has no registered source.
`ModuleRegistry`	Maps module specifiers to ES module source strings.

Layout

Class	Description
`BlockFragment`	Geometry fragment for a block-level box.
`BoxNode`	Single box-tree node produced by :func:`build_box_tree`.
`BoxRoot`	Root wrapper returned by :func:`build_box_tree`.
`BreakHints`	Class with 5 properties.
`ComputedStyle`	Immutable layout-facing snapshot of an element’s resolved style.
`Display`	Resolved display triple per CSS Display L3 §2.
`EdgeSizes`	Logical edge sizes in CSS px units.
`FragmentRoot`	Root wrapper for block-layout fragment output.
`InlineTextFragment`	Positioned inline text fragment for a single shaped run.
`LineFragment`	Single inline formatting context line box.
`PageFragment`	Single paginated fragmentainer (page box) with ordered content.
`PageMarginBoxes`	Placeholder page-margin-box container for later paint stages.
`ShapedRun`	Shaped text-run payload with deterministic metrics.

Tokenizer

Class	Description
`CharacterToken`	A character token carrying one or more Unicode characters.
`CommentToken`	A comment token, e.g.
`DoctypeToken`	A DOCTYPE token emitted by the WHATWG tokeniser.
`EndTagToken`	An end tag token, e.g.
`EofToken`	An end-of-file token.
`StartTagToken`	A start tag token, e.g.
`Tokenizer`	WHATWG HTML tokeniser (§13.2.5).

Enumerations

Enumeration	Description
`TokenizerState`	All tokeniser states defined in WHATWG HTML Living Standard §13.2.5.

Tree

Class	Description
`ActiveFormattingList`	The list of active formatting elements as defined in §13.2.4.3.
`StackOfOpenElements`	The stack of open elements as defined in §13.2.4.2.
`TemplateInsertionModeStack`	The template insertion mode stack per §13.2.4.1.
`TreeBuilder`	Drives the WHATWG tree construction algorithm.

Enumerations

Enumeration	Description
`InsertionMode`	The 23 WHATWG insertion modes (§13.2.6).

Url

Class	Description
`URL`	Class with 3 methods and 12 properties.
`URLParseError`	Raised when a string cannot be parsed as a URL.
`URLSearchParams`	Ordered query-string pairs with duplicate-key support.

Aspose.HTML FOSS for Python

Core API

Css

Enumerations

Cssom

Dom

Encoding

Js

Layout

Tokenizer

Enumerations

Tree

Enumerations

Url

See Also