If specified, creates an isolated world with the given name and evaluates given script in it. This world name will be used as the ExecutionContextDescription::name when the corresponding event is emitted.

Specifies whether command line API should be available to the script, defaults to false.

If true, runs the script immediately on existing execution contexts or worlds. Default: false.

Identifier of the added script.

Image compression format (defaults to png).

Compression quality from range [0..100] (jpeg only).

Capture the screenshot of a given region only.

Capture the screenshot from the surface, rather than the view. Defaults to true.

Capture the screenshot beyond the viewport. Defaults to false.

Optimize image encoding for speed, not for resulting size (defaults to false)

Base64-encoded image data. (Encoded as a base64 string when passed over JSON)

Id of the frame in which the isolated world should be created.

An optional name which is reported in the Execution Context.

Whether or not universal access should be granted to the isolated world. This is a powerful option, use with caution.

Execution context of the isolated world.

Manifest location.

Manifest content.

Parsed manifest properties. Deprecated, use manifest instead.

Present frame tree structure.

Deprecated metrics relating to the layout viewport. Is in device pixels. Use cssLayoutViewport instead.

Deprecated metrics relating to the visual viewport. Is in device pixels. Use cssVisualViewport instead.

Deprecated size of scrollable area. Is in DP. Use cssContentSize instead.

Metrics relating to the layout viewport in CSS pixels.

Metrics relating to the visual viewport in CSS pixels.

Size of scrollable area in CSS pixels.

Index of the current navigation history entry.

Array of navigation history entries.

Whether to accept or dismiss the dialog.

The text to enter into the dialog prompt before accepting. Used only if this is a prompt dialog.

URL to navigate the page to.

Referrer URL.

Intended transition type.

Frame id to navigate, if not specified navigates the top frame.

Referrer-policy used for the navigation.

Frame id that has navigated (or failed to navigate)

Loader identifier. This is omitted in case of same-document navigation, as the previously committed loaderId would not change.

User friendly error message, present if and only if navigation has failed.

Unique id of the entry to navigate to.

Paper orientation. Defaults to false.

Display header and footer. Defaults to false.

Print background graphics. Defaults to false.

Scale of the webpage rendering. Defaults to 1.

Paper width in inches. Defaults to 8.5 inches.

Paper height in inches. Defaults to 11 inches.

Top margin in inches. Defaults to 1cm (~0.4 inches).

Bottom margin in inches. Defaults to 1cm (~0.4 inches).

Left margin in inches. Defaults to 1cm (~0.4 inches).

Right margin in inches. Defaults to 1cm (~0.4 inches).

Paper ranges to print, one based, e.g., '1-5, 8, 11-13'. Pages are printed in the document order, not in the order specified, and no more than once. Defaults to empty string, which implies the entire document is printed. The page numbers are quietly capped to actual page count of the document, and ranges beyond the end of the document are ignored. If this results in no pages to print, an error is reported. It is an error to specify a range with start greater than end.

HTML template for the print header. Should be valid HTML markup with following classes used to inject printing values into them:

• date: formatted print date
• title: document title
• url: document location
• pageNumber: current page number
• totalPages: total pages in the document

For example, <span class=title></span> would generate span containing the title.

HTML template for the print footer. Should use the same format as the headerTemplate.

Whether or not to prefer page size as defined by css. Defaults to false, in which case the content will be scaled to fit the paper size.

return as stream

Whether or not to generate tagged (accessible) PDF. Defaults to embedder choice.

Whether or not to embed the document outline into the PDF.

Base64-encoded pdf data. Empty if |returnAsStream| is specified. (Encoded as a base64 string when passed over JSON)

A handle of the stream that holds resulting PDF data.

If true, browser cache is ignored (as if the user pressed Shift+refresh).

If set, the script will be injected into all frames of the inspected page after reload. Argument will be ignored if reloading dataURL origin.

If set, an error will be thrown if the target page's main frame's loader id does not match the provided id. This prevents accidentally reloading an unintended target in case there's a racing navigation.

Whether to bypass page CSP.

Frame id to set HTML for.

HTML content to set.

If true, starts emitting lifecycle events.

Mock latitude

Mock longitude

Mock accuracy

Base64-encoded data (Encoded as a base64 string when passed over JSON)

Format (defaults to mhtml).

Serialized page data.

Message to be displayed in the report.

Specifies the endpoint group to deliver the report to.

Identifies the bottom-most script which caused the frame to be labelled as an ad. Only sent if frame is labelled as an ad and id is available.

App id, either from manifest's id attribute or computed from start_url

Recommendation for manifest's id attribute to match current id computed from start_url

Frame id to get resource for.

URL of the resource to get content for.

Resource content.

True, if content was served as base64.

Present frame / resource tree structure.

Frame number.

Frame id for resource to search in.

URL of the resource to search in.

String to search for.

If true, search is case sensitive.

If true, treats string parameter as regex.

List of search matches.

Whether to block ads.

Specifies font families to set. If a font family is not specified, it won't be changed.

Specifies font families to set for individual scripts.

Specifies font sizes to set. If a font size is not specified, it won't be changed.

Target lifecycle state

Image compression format.

Compression quality from range [0..100].

Maximum screenshot width.

Maximum screenshot height.

Send every n-th frame.

Identifier of the added script.

Name of the cookie to remove.

URL to match cooke domain and path.

Overriding width value in pixels (minimum 0, maximum 10000000). 0 disables the override.

Overriding height value in pixels (minimum 0, maximum 10000000). 0 disables the override.

Overriding device scale factor value. 0 disables the override.

Whether to emulate mobile device. This includes viewport meta tag, overlay scrollbars, text autosizing and more.

Scale to apply to resulting view image.

Overriding screen width value in pixels (minimum 0, maximum 10000000).

Overriding screen height value in pixels (minimum 0, maximum 10000000).

Overriding view X position on screen in pixels (minimum 0, maximum 10000000).

Overriding view Y position on screen in pixels (minimum 0, maximum 10000000).

Do not set visible view size, rely upon explicit setVisibleSize call.

Screen orientation override.

The viewport dimensions and scale. If not set, the override is cleared.

Mock alpha

Mock beta

Mock gamma

Whether to allow all or deny all download requests, or use default Chrome behavior if available (otherwise deny).

The default path to save downloaded files to. This is required if behavior is set to 'allow'

Whether the touch event emulation should be enabled.

Touch/gesture events configuration. Default: current platform.

Id of the frame containing input node.

Input mode.

Input node id. Only present for file choosers opened via an <input type="file"> element.

Id of the frame that has been attached.

Parent frame identifier.

JavaScript stack trace of when frame was attached, only set if frame initiated from script.

Id of the frame that has been detached.

Frame object.

Whether dialog was confirmed.

User input in case of prompt.

Frame url.

Message that will be displayed by the dialog.

Dialog type.

True iff browser is capable showing or acting on the given dialog. When browser has no dialog handler for given target, calling alert while Page domain is engaged will stall the page execution. Execution can be resumed via calling Page.handleJavaScriptDialog.

Default dialog prompt.

Id of the frame.

Loader identifier. Empty string if the request is fetched from worker.

The URL for the new window.

Window name.

An array of enabled window features.

Whether or not it was triggered by user gesture.

Id of the frame that has cleared its scheduled navigation.

Id of the frame that has scheduled a navigation.

Delay (in seconds) until the navigation is scheduled to begin. The navigation is not guaranteed to start.

The reason for the navigation.

The destination URL for the scheduled navigation.

The loader id for the associated navigation.

The frame id of the associated frame.

Array of reasons why the page could not be cached. This must not be empty.

Tree structure of reasons why the page could not be cached for each frame.

Base64-encoded data (Encoded as a base64 string when passed over JSON)

Frame object.

Id of the frame that is being navigated.

The reason for the navigation.

The destination URL for the requested navigation.

The disposition for the navigation.

Id of the frame that has started loading.

Id of the frame that has stopped loading.

Id of the frame.

Frame's new url.

Base64-encoded compressed image. (Encoded as a base64 string when passed over JSON)

Screencast frame metadata.

Frame number.

True if the page is visible.

Global unique identifier of the download.

Total expected bytes to download.

Total bytes received.

Download status.

Id of the frame that caused download to begin.

Global unique identifier of the download.

URL of the resource being downloaded.

Suggested file name of the resource (the actual name of the file saved on disk may differ).

Error message.

If critical, this is a non-recoverable parse error.

Error line.

Error column.

Frame unique identifier.

Parent frame identifier.

Identifier of the loader associated with this frame.

Frame's name as specified in the tag.

Frame document's URL without fragment.

Frame document's URL fragment including the '#'.

Frame document's registered domain, taking the public suffixes list into account. Extracted from the Frame's url. Example URLs: http://www.google.com/file.html -> "google.com" http://a.b.co.uk/file.html -> "b.co.uk"

Frame document's security origin.

Frame document's mimeType as determined by the browser.

If the frame failed to load, this contains the URL that could not be loaded. Note that unlike url above, this URL may contain a fragment.

Indicates whether this frame was tagged as an ad and why.

Indicates whether the main document is a secure context and explains why that is the case.

Indicates whether this is a cross origin isolated context.

Indicated which gated APIs / features are available.

Frame information for this tree item.

Child frames.

Horizontal offset relative to the document (CSS pixels).

Vertical offset relative to the document (CSS pixels).

Width (CSS pixels), excludes scrollbar if present.

Height (CSS pixels), excludes scrollbar if present.

Unique id of the navigation history entry.

URL of the navigation history entry.

URL that the user typed in the url bar.

Title of the navigation history entry.

Transition type.

X offset in device independent pixels (dip).

Y offset in device independent pixels (dip).

Rectangle width in device independent pixels (dip).

Rectangle height in device independent pixels (dip).

Page scale factor.

Horizontal offset relative to the layout viewport (CSS pixels).

Vertical offset relative to the layout viewport (CSS pixels).

Horizontal offset relative to the document (CSS pixels).

Vertical offset relative to the document (CSS pixels).

Width (CSS pixels), excludes scrollbar if present.

Height (CSS pixels), excludes scrollbar if present.

Scale relative to the ideal viewport (size at width=device-width).

Page zoom factor (CSS to device independent pixels ratio).

Script Id of the bottom-most script which caused the frame to be labelled as an ad.

Id of adScriptId's debugger.

Computed scope value

Url of the file where blockage happened. Optional because of tests.

Function name where blockage happened. Optional because of anonymous functions and tests.

Line number in the script (0-based).

Column number in the script (0-based).

Type of the reason

Not restored reason

Context associated with the reason. The meaning of this context is dependent on the reason:

• EmbedderExtensionSentMessageToCachedFrame: the extension ID.

URL of each frame

Not restored reasons of each frame

Array of children frame

The URL of the script to produce a compilation cache entry for.

A hint to the backend whether eager compilation is recommended. (the actual compilation mode used is upon backend discretion).

Mimic a map, name is the key, accepts is the value.

Won't repeat the enums, using string for easy comparison. Same as the other enums below.

The standard font-family.

The fixed font-family.

The serif font-family.

The sansSerif font-family.

The cursive font-family.

The fantasy font-family.

The math font-family.

Default standard font size.

Default fixed font size.

Resource URL.

Type of this resource.

Resource mimeType as determined by the browser.

last-modified timestamp as reported by server.

Resource content size.

True if the resource failed to load.

True if the resource was canceled during loading.

Frame information for this tree item.

Child frames.

Information about frame resources.

The src field in the definition, but changing to url in favor of consistency.

The error id (e.g. 'manifest-missing-suitable-icon').

The list of error arguments (e.g. {name:'minimum-icon-size-in-pixels', value:'64'}).

Argument name (e.g. name:'minimum-icon-size-in-pixels').

Argument value (e.g. value:'64').

parsedToken is present only when the token is extractable and parsable.

Instead of using tuple, this field always returns the serialized string for easy understanding and comparison.

Top offset in DIP.

Page scale factor.

Device screen width in DIP.

Device screen height in DIP.

Position of horizontal scroll in CSS pixels.

Position of vertical scroll in CSS pixels.

Frame swap timestamp.

Name of the script which these font families are defined for.

Generic font families collection for the script.

Embed the ShareTargetParams

The extra description provided by the manifest.

The overrided display mode controlled by the user.

The handlers to open files.

TODO(crbug.com/1231886): This field is non-standard and part of a Chrome experiment. See: https://github.com/WICG/web-app-launch/blob/main/launch_handler.md

The handlers to open protocols.

Non-standard, see https://github.com/WICG/manifest-incubations/blob/gh-pages/scope_extensions-explainer.md

The screenshots used by chromium.