Is it possible to upload and crop multiple images using Cloudinary (Javascript/React-JS) ?
Any help shall be greatly appreciated.
Thanks
If you're using the Upload API, you can upload multiple files in succession and send the cropping coordinates for each in the custom_coordinates property: https://cloudinary.com/documentation/image_upload_api_reference#upload_optional_parameters
I assume from your question that you're not uploading directly though, and are using the Upload Widget on your page.
If so, the cropping interface only works when uploading a single file, so to upload multiple files and let the user choose crop coordinates for each, you'll need to open the widget multiple times in succession: https://cloudinary.com/documentation/upload_widget_reference#cropping_parameters
Related
I have a webform with and want to open it on smartphone - than take pictures of some documents which need to be merged in one PDF, and on the end this file need to be uploaded to server.
My solution is to use Google Drive to upload PDF (scan) to GDrive and then somehow download this file from gdrive to server via some sort of widget (any links appreciate) installed on website.
Maybe someone have a better idea?
I know its late but my answer might help others. I also face the same challenge and implemented a custom solution based on Javascript and Since you are using web form so this solution will perfectly fits on your need.
You have to use JSPdf javascript library, JSPdf provide you pdf object in your browser and you can upload it download it and there are many other thing to play with.
First you have to initialize JSPdf object as per your requirement. I am creating PDF with page size width:500px and height 500px.
pdf = new jsPDF("l", "pt", [500,500]);
Simply when you will take picture from camera you will have each picture in form of base64, that base64 format you have to insert in JSPdf object
pdf.addImage(imgData, 'JPEG', 0, 0);
you can repeat the above code to add pictures from camera as much as you want, at the back-end these images are compiling and creating pdf document where each page have each images in sequence.
Once you are done, you can get PDF object in form of base64 object using below code that you can upload to any server.
pdf.output('datauristring')
above is only pdf part, you can find complete working example including camera part here Javascript Component to Scan Document
There is any possibility to upload a file with different sizes in DropzoneJs?
I'm using vue-dropzone which is made with dropzonejs and i have to upload the same file with different sizing for srcset.
Example:
I want to upload the file test.png which is 1000x500 px. There is any possibility to upload it at the same time in original resolution and also in 500x250px?
Image resizing in the browser has been a seat-of-the pants experience for a long time. Web assemblies are the way of the future for processing-intensive tasks in web apps. I came across this project the other day. It looks fantastic and I really can't wait to strip out our home-baked image resizing with canvas and replace it with this.
The usual reason for doing this is to avoid large uploads. It's a little bit weird to want to resize in the browser then upload the original. You might be better resizing on the server. You'll save bandwidth and the server libraries will be more mature than what's available on the client.
Along with the original image object you can add one more your custom resized image to the array of images by using resize config of dropzone. You can do the above on drop event or adddedFile event of dropzone.
I'm evaluating Fine Uploader compared to various other options, specifically JQuery File Upload.
I generally prefer the Fine Uploader approach as it's more lightweight, compared to JQuery File Uploader which has dependencies on Bootstrap and JQuery UI.
However it's important to be able to resize images: e.g., a user may select a large file from their camera and this may be very large - uploading the full resolution photo may take a very long time. JQuery File Upload doe this.
Additionally we don't have much use for very high resolution files.
If possible (I'm aware some browsers may not support this), I'd like to be able to resize images client size.
Is this possible?
Fine Uploader does not currently have any native support for image manipulation. This is a feature in our backlog, but we have not had many users tell us they are interested in this. This is one of the reasons why such a feature has yet to be implemented natively. There is a case, #707 that marks the start of native image-editing support for Fine Uploader. It is tentatively scheduled for 4.0.
However, you can certainly make use of FileReader and Canvas to resize the image. You can then submit this resized image as a Blob to Fine Uploader via the addFiles API method. At that point, the file has been submitted and Fine Uploader is ready to upload the item.
Essentially, the steps you would follow to handle this specific scenario, before Fine Uploader natively supports image manipulation:
Provide your own file input element(s) or make use of Fine Uploader's file/folder drag and drop support to get a handle on some files selected by the user.
Use FileReader to read the contents of the image.
FileReader will provide you with a URL for the image, assign that to the src attribute of an img element.
Draw the img onto a canvas element. This is where the resizing occurs.
Grab the URL of the resized image from the canvas element (canvas.toDataURL(...)).
Convert the URL to a Blob.
Pass the Blob to the addFiles API method of Fine Uploader.
The intent is to take care of most if not all of this for integrators such as yourself in the future by adding native image manipulation support to Fine Uploader.
Hope this helps.
I'm developing a simple web app and I just want to allow the user to upload some pictures.
should I just store the picture url on my database table or should I upload the whole picture?
how can I validate the size of the picture being uploaded?
how can I upload the picture from my controller?
thank you all!
I would NOT store the image data in the database. I would create a Behavior that will upload the image to the image directory and store a reference to that image. The behavior can then handle size, mime type, etc. Then add a file upload form to the controller and when the data goes to the model to be saved, it will automatically upload the image and put it where it goes.
If you do not want to build your own, here is a very popular behavior that someone has built.
https://github.com/jrbasso/MeioUpload
Or you could try this simple way of doing it (check the readme.md file) :
https://github.com/malikov/cakephp2.0-image-upload
Is there any way to resize pictures while uploading them in Symfony2 ?
The ImagineAvalancheBundle only allows to resize images to thumbnails when retrieving them, which is not really performant to me.
Besides, the UploadedFile object retreived when posting data doesn't seems to have resizing methods...
Any Idea ?
I had the same problem you are asking for.
The main issue is that the bundle resizes and/or crops the images directly.
So that can take a lot of time with big images and if many images are expected per page.
So I've fix this issue by calling directly after imageupload the resize() function to the image.
Hence, I save (copy) the resized image to the filesystem at the server. Obviously I store the path of the image into the database to can load it directly if needed.
I tried the included memcache of the imageresize bundle but in my case it doesn't work.
I had the same problem for a project that i'm actually developing. I searched a lot on the net and found nothing realy performant and also easy to use for non-tech people.
I created a bundle to be able to upload with jquery file upload and crop with jcrop with some other functions.
ComurImageBundle
What is exactly your goal ? Resize and crop ? Other ?
I don't understand why you say that the bundle resize to thumbnail only as you can define precisely your resize preset through config :
# app/config/config.yml
avalanche_imagine:
filters:
my_thumb:
type: thumbnail
options: { size: [120, 90], mode: outbound }