Resize or Modify an image before saving
Small snippet that will resize all images before they uploaded to the server.
- image
- pil
- resize
- save
- imagefield
- modified
- pre_save
- override
Snippet List
Signal to resize uploaded Fiber images as new thumbnailed images
You only have to put the code in some of your models.py and to have django-fiber installed in your system. Every image uploaded using Fiber admin dialog will be automatically resized and thumbnailed. Or whatever you need to do with it.
- image
- thumbnail
- resize
- crop
- signal
- fiber
ResizeImageField
ResizeImageField ================ (extension of RemovableImageField) ================================= by Wim Feijen, Go2People. What does it do? ---------------- ResizeImageField is a replacement for django's ImageField. It has two major benefits: 1. Creation of thumbnails and scaled images. 1. Extends the image upload form and adds a preview and a checkbox to remove the existing image. It's easy to use: - Replace ImageField by ResizeImageField - No further changes are necessary Requirements: ------------- Working installation of PIL, the Python Imaging Library Usage ----- - add resize_image to your app - add resize_filters.py to your templatetags - in settings.py, set a PHOTO_DIR, f.e. photos/original - in models.py, add: - from settings import PHOTO_DIR - from resize_image import ResizeImageField - photo = ResizeImageField(upload_to=PHOTO_DIR, blank=True) Scaled images will be stored in 'photos/scaled', thumbnails will be stored in 'photos/thumb'. Access your images from your template. Add:: {% load resize_filters %} {{ address.photo.url|thumb }} or:: {{ address.photo.url|scaled }} Defaults ------- - Scaled images are max. 200x200 pixels by default - Thumbnails are 50x50 pixels. Override the default behaviour in settings.py Scaling is done by PIL's thumbnail function, transparency is conserved. Credits ------ This code is an adaptation from python snippet 636 by tomZ: "Updated Filefield / ImageField with a delete checkbox"
- image
- thumbnail
- resize
- scale
- delete
- ImageField
- ResizeImageField
- removable
Yet Another Image Resizer
There's a whole range of examples online for resizing images in Django some of which are incredibly comprehensive with a wide variety of options. Here's my take on the task that serves as a simple drop in for when you don't want to include a separate app. - Only generates the resized image when first requested. - Handles maintaining proportions when specifying only a width or a height. - Makes use of PIL.ImageOps.fit for cropping without reinventing the wheel.
- template
- tag
- image
- pil
- thumbnail
- resize
Updated Filter to resize a ImageField on demand (ver.2)
An update to snippet 1718 (http://www.djangosnippets.org/snippets/1718/). This update lets you pass an image URL string as well as a model ImageField instance. This means that you can then create thumbnails on demand for images outside of model
- image
- templatetag
- thumbnail
- resize
- imagefield
Updated Filter to resize a ImageField on demand
Based on http://www.djangosnippets.org/snippets/192/ But this works with Django 1.1 while maintaining the same functionality.
- filter
- models
- thumbnail
- resize
- imagefield
- demand
Image resize on demand
** Image on demand view ** I often post photos on photography fora. Most fora want you to place a link to a photo somewhere on the net, but different fora have different rules. Some fora want you to stick to a maximum of 800 pixels wide, some 700 pixel and some even strange values like 639 pixels. My own site uses 600 pixels so I end up resizing images all the time. Since I keep my originals with my gallery as well (hidden for public viewing) resizing on the fly would be a nice asset. I'm using my previous snippet to apply a slight unsharp mask for better web display of my photos. ** usage ** This snippet takes the url to my photo application which is a simple link using the pk of my photo table and adds 'width'.jpg to the end (some fora check if the link is an image based on extenstion) The view takes the width requested and creates the resized image from the original full size image or takes it from the cache for display on demand. To prevent a dozen directories I use a setting to specify which widths are allowed, providing room for several versions of the same image. Any improvements are appreciated since I'm still rather inexperienced in Python and Django.
- image
- pil
- resize
- pythonmagick
iPernity thumbnail helper
A simple template filter that detects [iPernity](http://www.ipernity.com) static URLs and creates clickable thumbnail for them. Use it with [Lightbox](http://www.huddletogether.com/projects/lightbox2/) or any other funky image overlay script. Your HTML code may contain this: <p>A short example <img src="http://...ipernity..." title="The Description" />.</p> After applying this filter it will become: <p>A short example <a href="http://...large version..." title="The Title"><img alt="The Title" src="http://...thumb version..."/> </a>.</p> Thats all! You may have a look at this: [iPernity and static URLs](http://www.ipernity.com/group/api-users/discuss/20098)
- template
- image
- thumbnail
- resize
- ipernity
resize to thumbnail with scale-to-fill
**So you can upload rectangular pictures but still have square thumbnails.** "Scale to **fill**" instead of the out of the box "scale to **fit**" you get with `Image.thumbnail`
- image
- pil
- thumbnail
- resize
- imagefield
A Django image thumbnail filter
I've gotten this code originally from Dan Fairs. I've edited it a bit to make it do what I wanted it to do. I've sent a mail and the original can be considered public domain code. The same is true for this
- image
- resize
Image Standarization
Standarization of image fields (for being used when saving models). Automatically creates thumbnail. Change image name to /path/to/images/<my_field>-<id>.<ext>. Resize image and thumbnail to specified size (optionally can crop image to force size).
- image
- thumbnail
- resize
- rename
Resize image on save
This snippet is extracted from my Photo model. I use it to ensure that any uploaded image is constrained to a specified size (resized on save). In my case, I don't need to maintain a "thumbnail" and "fullsize" version, so I just store the resized version to save space.
- image
- pil
- resize
Filter to resize a ImageField on demand
A filter to resize a ImageField on demand, a use case could be: ` <img src="object.get_image_url" alt="original image"> <img src="object.image|thumbnail" alt="image resized to default 200x200 format"> <img src="object.image|thumbnail:"200x300" alt="image resized to 200x300"> ` The filter is applied to a image field (not the image url get from *get_image_url* method of the model), supposing the image filename is "image.jpg", it checks if there is a file called "image_200x200.jpg" or "image_200x300.jpg" on the second case, if the file isn't there, it resizes the original image, finally it returns the proper url to the resized image. There is a **TODO**: the filter isn't checking if the original filename is newer than the cached resized image, it should check it and resize the image again in this case.
- filter
- models
- thumbnail
- resize
- imagefield
Function to create resized versions of an image from a URL and saving it to a local path
This is a really useful function I used to create the resized preview images you can see on the [homepage of my site](http://www.obeattie.com/). Basically, it takes the original URL of an image on the internet, creates a resized version of that image by fitting it into the constraints specified (doesn't distort the image), and saves it to the MEDIA_ROOT with the filename you specify. For example, I use this by passing it the URL of a Flickr Image and letting it resize it to the required size, and then saving it to a local path. It then returns the local path to the image, should you need it. I however just construct a relative URL from the image_name and save that to the database. This way, it's easy to display this image. Hope it's useful!
- image
- pil
- thumbnail
- resize
14 snippets posted so far.