Emilian Robert Vicol

“timestamp on the images” … hm, hard to belive …

But, if watermark files are deleted from the cache frequently and constantly changing the timestamp on the image, then it appears that the images change frequently (binary level) … but only serverd as watermark not as original source.
There is an explanation as hypothesis and is not checked, it’s only a hypothesis!

I introduced the option “timestamp over images” only as for verification and debug purpose, that’s why it is not enabled by default.

However, you’re the first to have this problem … and the only one.

and send-me the websites to get an idea (byrev @ yahoo com)

Hi @gregds is not related to this plugin, is imposible, as long as it was used in default mode and plugin find images after redirection script !!!
– Rewrite Image Mode: Pass Through: internal redirection
– Redirect Direct Clik: attachment template
– Allowed User Agents: googlebot (minimal)
– Allow Social Sites: [enabled] (google plus is included)
– Image Not Found code: 404 Not Found / and Image Not Found page must be manually created in wordpress or dynamic template.

“Pass Through” mode is imposible to detect by search-engines as long as the search-engine agent is present in the “Allowed User Agents” list. Even otherwise, oit can only detect different at binary level, but it is the same as the size and content.

I did not invent it myself, Hotlink protection is used for years, only now has become more popular ??

Even with “Redirect 302” would not be a problem as long as the redirect is correct and images is there.

Redirect 307 is not sugested, was implemented as an option for those who use Varnish Cache and only temporarily.

i use this plugin in many sites without dropped problems:
– https://publicphoto.org/
– https://mihella.me/
– https://wp-picshield.com/
byrev.org, images.blog-u.net, etc

file-cache are deleted automatically when save/update options.

hi @camafive

U must first understand the plugin ?? …

Resolution for this image:
https://tripeomusic.info/wp-content/uploads/2012/12/109edd5670a28837baf5af5175c23cb5.jpg

is 2214 × 2657 … that is over 3 MegaPixels for default settings

Change via : “Maximum Megapixels” to 6

6 is maxim … over 6 Mpix there is a risk that the script/plugin does not have enough memory !!!

Download Version v1.8.9i
_____________
1.8.9i

add KNOW_CDN_USER_AGENT photon, smush.it + something they do not know exactly: akamai, cloudfront, netdna, bitgravity, maxcdn, edgecast, limelight (silent force in htaccess; future options)

*************
Important: Do not forget, after every update: confirm and update new futures from config plugin page.

and btw, smush.it ip: 98.139.160.207 (but not used in plugin, just user agent is used.)
________________
I’ll do a tutorial to explain how to enter debug mode and how to use “debug” mode for get/spy cdn server response.

Hi,

U need to know your user-agent and/or class IPs for Smush.it

Add this info to plugin options:

Allowed User Agents:
Allowed Remote IP:

btw, u know that the images served by cdn is not protected? (unless you can add rules via htacces cdn server)

btw, if u use jetpack or cdn’s …

Very important: Read before use and install!

Varnish, Lighthttpd, and other ?cache? services is not 100% compatible with this plugin ? probably only if cache is disabled for all images.

CDN images will not be redirected and no watermarked (if they are served correctly) ? so, clearly, this plugin is suitable only for standard installation and for CDN with custom htaccess configurable by webmasters. CDN users must ensure that the images served by the CDN?s server may be manual updated or have expiration period.

Beware of those who use the Jetpack. CDN wordpress (Photon) never expire, and the lowest WP-PICShield version that allows Photon to take pictures correctly is 1.8.9.d ! If you are unsure, do not use this plugin. Photon Cache can not be updated, watermark images remain forever (unless you change the images path or filename)

Update to new version: bing redirection in chrome and firefox.

And if google was against us, https://wp-picshield.com/ have no pictures indexed, because this site has always enabled plugin from the beginning.

?? probably the only site in the world to have anti-hotlinking protection even before being indexed in Google.

update to new version …

And attention to plugins and scripts that use CDN’s ??

Hi, New version here:

= 1.8.9b =

* Add Rewrite Mode: Pass Through: internal redirection. Redirect 302: External redirect to cached image (try to solve problems with Varnish, Lighttpd and other mode cache);
* Some internal change;
* Show version and warnings to update option database with new features.
* Allow CDN wp.com …
————-
try “Redirect 302” …

if there are some problems, back to old version
https://wp-picshield.com/plugin/1.8.7b.zip

I do not think u have any problems, I’ve tested and it ok for 3 sites.

We hear in ~ 10 hours.

LOL, that was cool: D

Hi Greg

Give me link to study the problem. Only from picture I can not figure out the cause.I know nothing about Jetpack widget … I need to see link/code to clarify !

If you do not want to publicly link, send to

byrev @ yahoo . com

hi le.gentleman

is something about LiteSpeed “cache” problem.

request return
– HTTP/1.1 304 Not Modified …
– max-age=604800

and posibile to have an additional cache htaccess directives …

Such problems will be solved in the next version, I’ll release within ~ 10 hours: No-transparent redirection option (Disabled by default)

btw: last 3 links works for me !!! … and first image loaded with watermark without referer in chrome …

anyway, wait for next vresion.

hi, thanks for details.

try update to version 1.8.8b

= 1.8.8b =

* attempt at solving warning in logs: with Invalid image dimensions in byrev-wp-picshield.php on line ***

and watch if warning messages still appear.

test it and tell me if it works well …

see u in 10 hours …