PDFiumVCL Docs

V8FeaturesAvailable property

Component: TPdf · Unit: PDFium

Read-only flag — True when the loaded PDFium build embeds the V8 JavaScript engine.

Syntax

property V8FeaturesAvailable: Boolean; // read only

Description

Returns True when the loaded PDFium build embeds the V8 JavaScript engine.

Some PDFium DLL variants ship without V8 to reduce footprint; JavaScript actions then become no-ops.

Class function; safe to call before any document is opened.

Remarks

Treat the value as immutable for the lifetime of the open document — reopening the file or changing pages may yield a different result.
Surface this value in your UI to drive feature toggles (for example, disable accessibility export when IsTagged is False).
All scalar boolean / type properties on TPdf are inexpensive O(1) reads.

Example

if Pdf1.Active and Pdf1.V8FeaturesAvailable then
Memo1.Lines.Add('V8FeaturesAvailable = True')
else
Memo1.Lines.Add('V8FeaturesAvailable = False');

See Also

JavaScriptActionCount, GetRecommendedV8Flags, XfaBStrHelpersAvailable