Use Python to obtain the Base64 encoding of the image. The source code is as follows:
| The code is as follows: | Copy code |
| #! /Usr/bin/env python #-*-Coding: UTF-8 -*- ''' # Base64-pic.py ''' Import OS, base64 Icon = open('ya.png ', 'RB ') IconData = icon. read () IconData = base64.b64encode (iconData) LIMIT = 60 LiIcon = [] While True: SLimit = iconData [: LIMIT] IconData = iconData [LIMIT:] LiIcon. append (''% s' % sLimit) If len (sLimit) <LIMIT: Break Print OS. linesep. join (liIcon) |
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Python base64 encoded image
A page has been saved many years ago, but it is found that the image is not saved as a file. When the page is opened, the image is displayed,
I started to think it was a game of JavaScript (because a lot of js jumps in and out) and linked to other places. After investigation, I found that there was a large segment of code in the source code that I could not understand,
Although it is estimated that this piece of code is an image, due to the limited vision at that time, it cannot be understood ~
Now I understand it! Python base64 encoded image-(pai_^)-Quiet
Test example: convert text to base64 encoding
>>> Import base64
>>> Ls_s = 'string text'
>>> Ls_t = base64.b64encode (ls_s) # Convert text content to base64
>>> Print ls_t
19a3 + 7 SuzsSxvg =
>>> Print base64.b64decode (ls_t) # decode
String text
>>>
Convert the image content to base64 encoding
Import base64
F = open (r 'X: 1.jpg ', 'RB') # open the image file in binary mode.
Ls_f = base64.b64encode (f. read () # read the file content and convert it to base64 encoding
F. close ()
Write the encoded text into a txt file
Fw = open (r 'X: 1.txt ', 'w') # open a blank text file and prepare to write
Fw. write (ls_f)
Fw. flush ()
Fw. close ()
Webpage expression
<Html> <body> </body>
Note that image/jpeg must be modified here if the image is of another type; image/png, image/gif, image/bmp, etc.
Data: URI is defined in RFC 2397 of the IETF standard.
Data: The basic format of URI is as follows:
Data: [<MIME-type>] [; base64 | charset = some_charset], <data>
Finally, make an instance, save the section as an htm file, and open it in a browser to see if it is a picture,
<HTML> <BODY> Src = "data: image/bmp; base64, invalid values/mt70/zg1M/9 DqMr/YWJg/values/Xouz/5O qpP81Vn7/O4ut/logs/TmaU/logs/g3Z1/x3d9v + JvNj/LCYk/values/HUKV /w0bJ/8XW7L/YNT7/7b1/P + Niof/I43F // commandid was too large Before = "/> </BODY> </HTML>
Available in Chrome, firefox, Opera, and ie8
Here, the Cup has come. It is tested that it cannot be used in ie6, but I think it should be an ie family, maybe ie5.
Check the information. ie8 is also limited to 32 k or less, and ie6/ie7 is not supported, and ie5 is the first to support it (because of efficiency and security issues, ie6 is abandoned ).
It's not easy to understand ~ Python base64 encoded image-(pai_^)-Quiet
Reference
Web screenshot Chrome plugin
Https://chrome.google.com/extensions/detail/ckibcdccnfeookdmbahgiakhnjcddpki? Itemlang = zh-CN
Base64 encoding and decoding in Python
Http://blog.csdn.net/lxdcyh/archive/2009/03/24/4021476.aspx
JavaScript Image Preview 2
Http://www.wolaikanshu.cn/Article/web/htmlcss/201002/39292.html
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