Ask facebook to re-scrape URL -


this question has answer here:

the og:image of website has been changed recently. site contains more 100 pages, each containing individual og:image. how can ask or force facebook re-scrape pages, image gets updated? using facebook debugger tool tedious task. until facebook re-scrape's site, won't able submit collection app.

you have 2 alternatives here in situation

  1. as per ysrb's answer loop through list of urls open graph debugger tool

  2. or wait patiently 30 days until facebook re-scrapes pages says in documentation here

why , when facebook scrape website?

facebook needs scrape links shared facebook know link preview information show on facebook.com or on facebook ios , android. happens every 30 days ensure properties date. linked page scraped when url entered debugger tool.

facebook observes cache headers on urls - @ "expires" , "cache-control" in order of preference. however, if specify longer time, facebook scrape page every 30 days.


Comments

Post a Comment

Popular posts from this blog

linux - Does gcc have any options to add version info in ELF binary file? -

i mean whether gcc can insert source code version infor elf binary section or similar. not want change source file, add info gcc option in makefile. you can emit version info text file, turn text file object file statically link executable. the first step simple have write code: script or write version info in format plain text file. write makefile rule produce version.o version.txt, using objcopy . you'll have object file 2 useful symbols defined in it: beginning , end of textual version info. add generated object executable, , you'll able access version 2 ways: running strings on binary, or writing code in application print version string (you'll need declare start , end symbols variables in header file).
Read more

android - send complex objects as post php java -

is possible send contact numbers via post php class inside eclipse ? or post limited primitive types , have find work arounds send them string ? i propose: send them json in post request, befor start, have @ gson project , keep in mind set content application -> json. luck
Read more

charts - What graph/dashboard product is facebook using in Dashboard: PUE & WUE -

i love facebook dashboard: pue & wue. beautifull can point out if there open source or commercial product offer similar style? here link https://www.facebook.com/forestcitydatacenter?sk=app_288655784601722&app_data so read through 29,888 lines of javascript ya.. biggest js file i've ever seen. looks make graph using variety of tools, including tween.js . it'd fascinating chat whoever made it. code wheel graph object starts @ line 27,266 text var graphcomponent = class.extend({ . can find source @ https://www.fbpuewue.com/assets/application-3a3af20f7fa3591229c79442ae3d1c26.js . sorry if dissapoints it's not awesome plugin can use :/ share pain. let me know if have questions :)
Read more