Loop recursively through a directory and compress all image files using the TinyPng Api https://tinypng.com/developers

img_compress.py

import os
from os.path import dirname
from urllib2 import Request, urlopen
from base64 import b64encode

compress_png = True 
compress_jpg = True
import_dir = '<INPUT DIR>'
output_dir = "<OUTPUT DIR>"
tiny_png_key = '<API KEY>'
tiny_png_url = 'https://api.tinypng.com/shrink'

img_count = 0
file_count = 0
compress_count = 0
existing_count = 0
 
 
def compressImage(filepath, filedest, overwrite = False):
	global compress_count
	global existing_count
	if not os.path.isfile(filedest) or overwrite: 
		status = ''
		request = Request(tiny_png_url, open(filepath, "rb").read())
		auth = b64encode(bytes("api:" + tiny_png_key)).decode("ascii")
		request.add_header("Authorization", "Basic %s" % auth)
		response = urlopen(request)
 
		if response.getcode() == 201:
			status = "success";
			headers = response.info()
			result = urlopen(headers["Location"]).read()
			
			if not os.path.exists(os.path.dirname(filedest)):
				os.makedirs(os.path.dirname(filedest))
			open(filedest, "wb").write(result)
			compress_count += 1
		else:
			status = "failed"
		print 'Compressing: %s\nFile: %s\nStatus: %s\n'%(filepath, img_count, status)
	else:
		existing_count += 1
 
 
# loop througs files in import_dir recursively 
for subdir, dirs, files in os.walk(import_dir):
    for file in files:
    	filepath = os.path.join(subdir, file)
    	fileName, fileExtension = os.path.splitext(file)
    	file_count += 1
    	if(fileExtension == '.png' and compress_png) or (fileExtension == '.jpg' and compress_jpg):
    		img_count += 1
    		filedest = filepath.replace(import_dir, output_dir)
    		compressImage(filepath, filedest)
        
 
print '================'
print 'Total Files: %s'%(file_count)
print 'Total Images: %s'%(img_count)
print 'Images Compressed: %s'%(compress_count)
print 'Images Previously Compressed (Exist in output directory): %s'%(existing_count)

Other Notes

• Compatible with Python 2.7
• Duplicates the directory structure and filenames of input_dir in the output_dir
• By default the request is not made if the corresponding file already exists in the output directory