Png to json python

what is the best way to save PIL image in json

I’m trying to send json dict that should contain Pillow image as one of his fields, to do that I have to convert the image to string. I tried to use pillow function: image.toString() but still got it as bytes, so I tried to encode it:

buff = BytesIO() image.save(buff, format="JPEG") img_str = base64.b64encode(buff.getvalue()) 

I’m not sure I understand the question. You now have your data as a string, and you want to save your data in a json file, and json files are capable of saving strings. So what’s the problem? Save your string to the file.

2 Answers 2

In the comments, Mark Setchell suggests calling .decode(‘ascii’) on the result of your b64encode call. I agree that this will work, but I think base64encoding to begin with is introducing an unnecessary extra step that complicates your code.*

Instead, I suggest directly decoding the bytes returned by image.tostring . The only complication is that the bytes object can contain values larger than 128, so you can’t decode it with ascii . Try using an encoding that can handle values up to 256, such as latin1 .

from PIL import Image import json #create sample file. You don't have to do this in your real code. img = Image.new("RGB", (10,10), "red") #decode. s = img.tobytes().decode("latin1") #serialize. with open("outputfile.json", "w") as file: json.dump(s, file) 

(*but, to my surprise, the resulting json file is still smaller than one made with a latin1 encoding, at least for my sample file. Use your own judgement to determine whether file size or program clarity is more important.)

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Convert PNG to JSON in Python

High-speed Python library for converting PNG to JSON. Use our excel conversion API to develop high-level, platform independent software in Python.

Aspose.Cells for Python

Overview

Download from NuGet

Open NuGet package manager, search for and install.
You may also use the following command from the Package Manager Console.

Convert PNG to JSON in Python

How do I convert PNG to JSON? With Aspose.Cells for Python via NET library, you can easily convert PNG to JSON programmatically with a few lines of code. Aspose.Cells for Python via NET is capable of building cross-platform applications with the ability to generate, modify, convert, render and print all Excel files. Python Excel API not only convert between spreadsheet formats, it can also render Excel files as images, PDF, HTML, ODS, CSV, SVG, JSON, WORD, PPT and more, thus making it a perfect choice to exchange documents in industry-standard formats.

Save PNG to JSON in Python Online for Free

The following example demonstrates how to convert PNG to JSON in Python via NET.

Follow the easy steps to convert PNG to JSON. Upload your PNG file, then simply save it as JSON file. For both PNG reading and JSON writing you can use fully qualified filenames. The output JSON content and formatting will be identical to the original PNG document.

   aspose.cells from aspose.cells import Workbook workbook = Workbook(
How to Convert PNG to JSON
Need to convert PNG files to JSON programmatically? Python developers can easily load & convert PNG to JSON in just a few lines of code.

  
Install ‘Aspose.Cells for Python via .NET’.
  
Add a library reference (import the library) to your Python project.
  
Load PNG file with an instance of Workbook.
  
Convert PNG to JSON by calling Workbook.save method.
  
Get the conversion result of PNG to JSON.

Python library to convert PNG to JSON
We host our Python packages in PyPi repositories.
Install Aspose.Cells for Python from pypi, use command as: $ pip install aspose-cells-python .
And you can also follow the step-by-step instructions on how to install “Aspose.Cells for Python via .NET” to your developer environment.
System Requirements
Aspose.Cells for Python via NET is platform-independent API and can be used on any platform (Windows, Linux), just make sure that system have Python 3.7 or higher.
PNG What is PNG File Format?
A PNG (Portable Network Graphics) file is a raster image file format that uses lossless compression. This file format was created as a replacement of Graphics Interchange Format (GIF) and has no copyright limitations. However, PNG file format does not support animations. PNG file format supports lossless image compression that makes it popular among its users. With the passage of time, PNG has evolved as one of the widely used image file formats.
JSON What is JSON File Format?
JSON (JavaScript Object Notation) is an open standard file format for sharing data that uses human-readable text to store and transmit data. JSON files are stored with the .json extension. JSON requires less formatting and is a good alternative for XML. JSON is derived from JavaScript but is a language-independent data format. The generation and parsing of JSON is supported by many modern programming languages. application/json is the media type used for JSON.
Other Supported Conversions
You can also convert PNG to many other file formats including few listed below.
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Convert PNG to JSON in Python
High-speed Python library for converting PNG to JSON. This is a professional software solution to import and export PNG, JSON, and many other formats using Python.
Aspose.Cells for Python
Overview
Download from NuGet
Open NuGet package manager, search for and install.
You may also use the following command from the Package Manager Console.
Convert PNG to JSON Using Python
How do I convert PNG to JSON? With Aspose.Cells for Python library, you can easily convert PNG to JSON programmatically with a few lines of code. Aspose.Cells for Python is capable of building cross-platform applications with the ability to generate, modify, convert, render and print all Excel files. Python Excel API not only convert between spreadsheet formats, it can also render Excel files as images, PDF, HTML, ODS, CSV, SVG, JSON, WORD, PPT and more, thus making it a perfect choice to exchange documents in industry-standard formats.
Save PNG to JSON in Python Online for Free
The following example demonstrates how to convert PNG to JSON in Python.
Follow the easy steps to convert PNG to JSON. Upload your PNG file, then simply save it as JSON file. For both PNG reading and JSON writing you can use fully qualified filenames. The output JSON content and formatting will be identical to the original PNG document.
   jpype  asposecells jpype.startJVM() from asposecells.api import Workbook workbook = Workbook(  
 
How to Convert PNG to JSON via Python
 
Need to convert PNG files to JSON programmatically? Python developers can easily load & convert PNG to JSON in just a few lines of code.
 
 
Install ‘Aspose.Cells for Python via Java’.
 
Add a library reference (import the library) to your Python project.
 
Load PNG file with an instance of Workbook.
 
Convert PNG to JSON by calling Workbook.save method.
 
Get the conversion result of PNG to JSON.
 
 
Python library to convert PNG to JSON
 
There are three options to install “Aspose.Cells for Python via Java” onto your system. Please choose one that resembles your needs and follow the step-by-step instructions:
 
 
Install Aspose.Cells for Python via Java in Windows. See Documentation
 
Install Aspose.Cells for Python via Java in Linux. See Documentation
 
Install Aspose.Cells for Python via Java in macOS. See Documentation
 
 
System Requirements
 
Aspose.Cells for Python via Java is platform-independent API and can be used on any platform (Windows, Linux and MacOS), just make sure that system have Java 1.8 or higher, Python 3.5 or higher.
 
 
Install Java and add it to PATH environment variable, for example: PATH=C:\Program Files\Java\jdk1.8.0_131; .
 
Install Aspose.Cells for Python from pypi, use command as: $ pip install aspose-cells .
 
 
PNG What is PNG File Format?
 
A PNG (Portable Network Graphics) file is a raster image file format that uses lossless compression. This file format was created as a replacement of Graphics Interchange Format (GIF) and has no copyright limitations. However, PNG file format does not support animations. PNG file format supports lossless image compression that makes it popular among its users. With the passage of time, PNG has evolved as one of the widely used image file formats.
 
JSON What is JSON File Format?
 
JSON (JavaScript Object Notation) is an open standard file format for sharing data that uses human-readable text to store and transmit data. JSON files are stored with the .json extension. JSON requires less formatting and is a good alternative for XML. JSON is derived from JavaScript but is a language-independent data format. The generation and parsing of JSON is supported by many modern programming languages. application/json is the media type used for JSON.
 
Other Supported Conversions
 
You can also convert PNG to many other file formats including few listed below.
 
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Преобразование PNG в JSON в Python
 
Высокоскоростная библиотека Python для преобразования PNG в JSON. Используйте наше преобразование Excel API для разработки высокоуровневого независимого от платформы программного обеспечения в Python.
 
Aspose.Cells for Python
 
Overview
 
Download from NuGet
 
Open NuGet package manager, search for and install.
You may also use the following command from the Package Manager Console.
 
Преобразование PNG в JSON в Python
 
Как преобразовать PNG в JSON? С Aspose.Cells for Python через библиотеку NET вы можете легко преобразовать PNG в JSON программно с помощью нескольких строк кода. Aspose.Cells for Python через NET способен создавать кроссплатформенные приложения с возможностью создания, изменения, преобразования, рендеринга и печати всех файлов Excel. Python Excel API не только конвертирует форматы электронных таблиц, но также может отображать файлы Excel в виде изображений, PDF, HTML, ODS, CSV, SVG, JSON, WORD, PPT и т. д., что делает его идеальным выбором для обмена документы в отраслевом стандарте форматы.
 
Сохраните PNG в JSON в Python онлайн бесплатно
 
В следующем примере показано, как преобразовать PNG в JSON в Python via NET.
 
Следуйте простым шагам, чтобы преобразовать PNG в JSON. Загрузите файл PNG, а затем просто сохраните его как файл JSON. Как для чтения PNG, так и для записи JSON вы можете использовать полные имена файлов. Содержимое и форматирование вывода JSON будут идентичны исходному документу PNG.
 
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