i wonder why when i save any jpg image from internet the EXIF data is gone or not saved?
i am developing a photo gallery website so i download sample photos from the net as testing, mostly from flickr.
i only download photos that have exif data, but once saved in my mac, the exif is removed or not saved. at first i thought my wordpress exif plugin is not working but when i check the exif locally in my mac, the exif data is not there.
that's because most operations done on an image will wipe the exif data
if you want to download the pictures from flicker while keeping the exif you will need to go (on the picture page) to Actions => All sizes => download original
if you do that you can keep the exif.
but for testing purposes what I do personally is to grap any picture from google image and than stamp the exif data using a stamping software myself. This way, I will know whether the data that I'm getting are correct or not.
BTW, I have just finished a week ago from developing a gallery website using wordpress for a client, so if you faced any problems specially in the exif part, feel free to ask
Related
Our Xamarin forms app supports both Android and IOS. This app uses a lot of png images on each and every screen.
We are looking for a better approach to deal with it. Whether to download a zip of png images and maintain them locally (or) download each png image on demand and cache it. It's ok if the application takes bit more time at the time of login. Could you please suggest.
I have an Ubuntu server which auto corrects images according to their orientation. The problem is that some pictures uploaded by users doesnt necessarily have EXIF info. Is it possible to handle this case?
Note: I currently use Rails CarrierWave::MiniMagick to rotate images on the server, like this 'img.tap(&:auto_orient)' and it works fine for pictures with EXIF info.
I noticed that all my browsers:
Mozilla Firefox
Google Chrome
Microsoft Edge
Internet Explorer
seem to ignore image EXIF orientation data.
But other programs are orienting the images when they are opened/displayed:
Google Mail
MS Paint
IrfanView
Windows Explorer
We have a webpage on which users can upload images. I am asking, because users are complaining that the uploaded images look diferent/rotated than when opened on their local device using an image viewer. It seems to become an icreasing problem as more and more users are using smartphones and cameras to upload images directly without using any image editing software.
Here you can find some example images that have EXIF data in their header: https://github.com/recurser/exif-orientation-examples
Question: Since the browsers are ignoring the EXIF orienting should one auto-apply them on the uploaded images and then strip them from the header? Why are browsers ignoring EXIF information? What to do?
In the app i'm working on, an image is displayed to the user which is gotten from a website.
I want the app to have an option to save the image to gallery.
From what i figure, since the image is displayed on the screen (and hence, has already been 'downloaded' to the phone), i shouldn't have to download it again for saving it to the phone (essentially specifying the URL of the image on the website as the image's source).
Is there a way to get the get the source (path) of the image?
I wrote one app while ago, it was about testing downloading an image from the web and putting it into Image control. And what surprised me a lot - after first download an image I was able to turn off wifi and after that image was still showing. I think WP7 have quiet good cache or something and maybe if U ask second time about the same URL U'll receive temporary file from cache instead downloading it again...
I researched a bit and found out that once an image has been downloaded from a url, it isn't downloaded again and is retrieved from the cache automatically. So, that leaves my question answered.
You were correct kingsvid!
My images should be cached so that they are not downloaded more than once.
They should only be updated if an image name is not currently stored locally.
How should an app cache images and use them locally without downloading again on BlackBerry?
Probably write your downloaded images to SDCard, then before redownload just check if the image is already present. However this could be not as simple as it may seem at a glance if you are new to file manipulation API on BlackBerry.