Finally, you’ll explore two ways to serve WebP images to your visitors. In this tutorial, you will use the command-line tool cwebp to convert images to WebP format, creating scripts that will watch and convert images in a specific directory. If your application or website is experiencing performance issues or increased traffic, converting your images may help optimize page performance. Using WebP images can lead to sizeable increases in page speed. Its main advantage over other image formats used on the web is its much smaller file size, which makes web pages load faster and reduces bandwidth usage. The WebP format supports both lossy and lossless image compression, including animation. There are also plans for implementing WebP in Firefox. Both Google Chrome and Opera support the WebP format natively, and since these browsers account for about 74% of web traffic, users can access websites faster if these sites use WebP images. Since then, the number of websites and mobile applications using the WebP format has grown at a fast pace. WebP is an open image format developed by Google in 2010 based on the VP8 video format. if field._has_changed(field.The author selected the Apache Software Foundation to receive a donation as part of the Write for DOnations program. elif field._has_changed(initial_value, data_value):įile "/Users/Gregor/Projekte/adClouds/in _has_changedġ082. change_message = nstruct_change_message(request, form, formsets)įile "/Users/Gregor/Projekte/adClouds/in construct_change_messageįile "/Users/Gregor/Projekte/adClouds/in changed_dataĤ40. return func._get_(self, type(self))(*args2, **kwargs2)įile "/Users/Gregor/Projekte/adClouds/in changeform_viewġ394. return self.changeform_view(request, object_id, form_url, extra_context)įile "/Users/Gregor/Projekte/adClouds/in _wrapperįile "/Users/Gregor/Projekte/adClouds/in bound_funcĢ5. return view(request, *args, **kwargs)įile "/Users/Gregor/Projekte/adClouds/in change_viewġ440. response = view_func(request, *args, **kwargs)įile "/Users/Gregor/Projekte/adClouds/in innerĢ04. response = view_func(request, *args, **kwargs)įile "/Users/Gregor/Projekte/adClouds/in _wrapped_view_funcĥ2. return self.admin_site.admin_view(view)(*args, **kwargs)įile "/Users/Gregor/Projekte/adClouds/in _wrapped_viewġ05. response = wrapped_callback(request, *callback_args, **callback_kwargs)įile "/Users/Gregor/Projekte/adClouds/in wrapperĥ67. Traceback: File "/Users/Gregor/Projekte/adClouds/in get_responseġ11. Installed Middleware: ('.SessionMiddleware', I also removed the cache settings in VERSATILEIMAGEFIELD_SETTINGS (does that actually deactivate the cache?) Switching back to the default ImageField solves the problem. Whether the VersatileImageField uses a ppoi or not does not matter. Maybe DVIF could provide an option to have the user supply a hashing function like this? Could be a simple dot-separated path to an importable callback so people can bring their own hashers.ĭjango raises an ValueError when I edit an object which uses the VersatileImageField. These are fairly compact string (unlike hex) but non-scary (no casing or specials chars). In our existing site we use an md5 binary hash encoded in (crockford) base32 alphabet and trimmed for length. Our existing thumbnailer (an old easythumbnails hackjob) also did this, but we've added a simple hashing function that takes the options concatenation and hashes it to make a compact chunky block of characters.īecause it uses a hashing function it is still generating unique names for each combination of options. Since some of our image URL's are somewhat visible to our users we'd like to clean this up if possible. We would like to cleanup the generated thumbnail paths/filenames.īy default DVIF will generate a long concatenation of all the filters and parameters used to generate the image in a human readable but a little messy looking URL (many segments with double underscores, numbers, dots and dashes).
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