himaprasoonpt/convert_to_300kb.py

## convert_to_300kb.py
import os
from flask import Flask, flash, request, redirect, url_for
from werkzeug.utils import secure_filename

import tempfile

tempdir = tempfile.mkdtemp(prefix="temp_image_upload")

UPLOAD_FOLDER = tempdir
ALLOWED_EXTENSIONS = {'png', 'jpg', 'jpeg'}
print(UPLOAD_FOLDER)
app = Flask(__name__)
app.config['UPLOAD_FOLDER'] = UPLOAD_FOLDER


def allowed_file(filename):
    return '.' in filename and \
           filename.rsplit('.', 1)[1].lower() in ALLOWED_EXTENSIONS


from flask import send_from_directory, send_file

from PIL import Image
import os
import math


def resize_image_to_specific_size(input_path):
    required_image_size_in_kb = 50
    img = Image.open(input_path)

    print(img.size)

    kb_size = os.stat(path=input_path).st_size / 1000
    print(kb_size)
    resize_factor = required_image_size_in_kb / kb_size
    print(resize_factor)

    img = img.resize((math.floor(img.size[0] * resize_factor), math.floor(img.size[1] * resize_factor)))
    if img.mode in ("RGBA", "P"):
        img = img.convert("RGB")
    img.save(input_path)

@app.route('/uploads/<filename>')
def uploaded_file(filename):
    return send_from_directory(app.config['UPLOAD_FOLDER'],
                               filename)

invlaid_file_html = '''
            <!doctype html>
            <title>Invalid file</title>
                <h1>Invalid file</h1>
            <a href="/">Click here to Try again</a>
            '''

@app.route('/', methods=['GET', 'POST'])
def upload_file():
    if request.method == 'POST':
        # check if the post request has the file part
        if 'file' not in request.files:
            flash('No file part')
            return redirect(request.url)
        file = request.files['file']
        # if user does not select file, browser also
        # submit an empty part without filename
        if file.filename == '':
            flash('No selected file')
            return redirect(request.url)
        if file and allowed_file(file.filename):
            try:
                filename = secure_filename(file.filename)
                file_path = os.path.join(app.config['UPLOAD_FOLDER'], filename)
                file.save(file_path)
                resize_image_to_specific_size(file_path)
                return send_file(file_path, as_attachment=True)
            except :
                return invlaid_file_html
        else:
            return invlaid_file_html
    return '''
    <!doctype html>
    <title>Upload new File</title>
    <h1>Upload new File</h1>
    <form method=post enctype=multipart/form-data>
      <input type=file name=file>
      <input type=submit value=Upload>
    </form>
    '''


if __name__ == '__main__':
    app.run()
	import os
	from flask import Flask, flash, request, redirect, url_for
	from werkzeug.utils import secure_filename

	import tempfile

	tempdir = tempfile.mkdtemp(prefix="temp_image_upload")

	UPLOAD_FOLDER = tempdir
	ALLOWED_EXTENSIONS = {'png', 'jpg', 'jpeg'}
	print(UPLOAD_FOLDER)
	app = Flask(__name__)
	app.config['UPLOAD_FOLDER'] = UPLOAD_FOLDER


	def allowed_file(filename):
	return '.' in filename and \
	filename.rsplit('.', 1)[1].lower() in ALLOWED_EXTENSIONS


	from flask import send_from_directory, send_file

	from PIL import Image
	import os
	import math




	def resize_image_to_specific_size(input_path):
	required_image_size_in_kb = 50
	img = Image.open(input_path)

	print(img.size)

	kb_size = os.stat(path=input_path).st_size / 1000
	print(kb_size)
	resize_factor = required_image_size_in_kb / kb_size
	print(resize_factor)

	img = img.resize((math.floor(img.size[0] * resize_factor), math.floor(img.size[1] * resize_factor)))
	if img.mode in ("RGBA", "P"):
	img = img.convert("RGB")
	img.save(input_path)

	@app.route('/uploads/<filename>')
	def uploaded_file(filename):
	return send_from_directory(app.config['UPLOAD_FOLDER'],
	filename)

	invlaid_file_html = '''
	<!doctype html>
	<title>Invalid file</title>
	<h1>Invalid file</h1>
	<a href="/">Click here to Try again</a>
	'''

	@app.route('/', methods=['GET', 'POST'])
	def upload_file():
	if request.method == 'POST':
	# check if the post request has the file part
	if 'file' not in request.files:
	flash('No file part')
	return redirect(request.url)
	file = request.files['file']
	# if user does not select file, browser also
	# submit an empty part without filename
	if file.filename == '':
	flash('No selected file')
	return redirect(request.url)
	if file and allowed_file(file.filename):
	try:
	filename = secure_filename(file.filename)
	file_path = os.path.join(app.config['UPLOAD_FOLDER'], filename)
	file.save(file_path)
	resize_image_to_specific_size(file_path)
	return send_file(file_path, as_attachment=True)
	except :
	return invlaid_file_html
	else:
	return invlaid_file_html
	return '''
	<!doctype html>
	<title>Upload new File</title>
	<h1>Upload new File</h1>
	<form method=post enctype=multipart/form-data>
	<input type=file name=file>
	<input type=submit value=Upload>
	</form>
	'''


	if __name__ == '__main__':
	app.run()