Bug 196906 - Web process spins and 'this webpage is using significant memory' banner appears when loading a large PDF in an <img> element
Summary: Web process spins and 'this webpage is using significant memory' banner appea...
Status: NEW
Alias: None
Product: WebKit
Classification: Unclassified
Component: PDF (show other bugs)
Version: Safari Technology Preview
Hardware: Mac Unspecified
: P2 Normal
Assignee: Nobody
URL:
Keywords: InRadar
Depends on:
Blocks:
 
Reported: 2019-04-14 09:09 PDT by Andy Estes
Modified: 2019-06-16 20:51 PDT (History)
3 users (show)

See Also:

Attachments
tall-pdf (855.14 KB, application/zip)
2019-04-14 09:09 PDT, Andy Estes 		no flags Details
View All Add an attachment (proposed patch, testcase, etc.)

Note You need to log in before you can comment on or make changes to this bug.
Description Andy Estes 2019-04-14 09:09:59 PDT 
Created attachment 367401 [details]
tall-pdf

When loading the attached (very tall) single-page PDF in an <img> element, the web process spins for a long time and eventually Safari displays the 'this webpage is using significant memory' banner.

Steps to reproduce:
1. Download the 'tall-pdf' attachment, unzip it, and open tall-pdf.html in Safari.

Occurs:
Safari Technology Preview 79 on macOS 10.14.4
Comment 1 Radar WebKit Bug Importer 2019-04-14 09:13:49 PDT 
<rdar://problem/49885955>