TweetImagesAsFileConverter

This tool is writen by pure html and js and css.

This tool intend to exchange file on Twitter in 1 tweet with 4 images.

To work you need to prepare ES2017 SuportBlowser(Chromium,Chrome,Firefox,etc)

You can convert a file(max 6.9MB) to images (900*900 px png max 4files). And you can convert these images to the file.

Support data encryption! algorism is AES256 GCM!

Make Images to Tweet on Twitter

• Prepare 1 file which you want to exchage on twitter.
• Open demo page.
• Ckick "To Images"tab.
• Set the file to "File:". Then images automatically made.(if data is small,then images made less than 4.)
• Click images to download them.
• If the file is encrypted, you mast input valid password.

Make The File from Tweeted Images

• Prepare 1~4 image files which download from Twitter.
• Open demo page.
• Ckick "To File"tab.
• If you want to encrypt the data, input password to pw form.
• Set the image files to "image1~4:". Then images automatically loaded.(if data is small,then images made less than 4.)
  • 1~4 Files valid order is required.
• You set need image files,Click "convertToFile"button to build and download The file.
  • if feed invalid image files or order, then you get invalid file or error.

Make QRCode which conteins Url for TweetImagesAsFileConverter & Images Tweet Page

Adding QRCode tab, you can get screen shot and send others. The QRCode conteins TweetImagesAsFileConverter page url & Tweet url which you inputed the QRCode Tab's input form. Scan Received Screen Shot,then open this TweetImagesAsFileConverter page & show Tweet url which you inputed!

• Open QRCode tab.
• Cpoy and Past Url for Images Tweeted Page.
• Then QRCode made. You send this QRCode to file Receiver.
• Receiver opne the QRCode url, then open TweetImagesAsFileConverter.
• When to File tab has a Link to opne Images Tweeted Page in new tab.

demo page

https://ryunosinfx.github.io/TweetImagesAsFileConverter/index.html

file convert logic

• to images

  • file -> dataUriScheme
  • fileName->fileName@base64
  • fileName@base64+','+dataUriScheme -> uint8array
  • uint8array is split max 4 image files -> 900*900 pixel(first pixcel is 0,0,0,0. use RGB,not use alpha channel. and padding ","=44)

• to File

  • images -> dataUriScheme
  • dataUriScheme -> Bitmap data (900*900 pixel,first pixcel is 0,0,0,0. use RGB,not use alpha channel)
  • Bitmap data -> uint8array(filter only RGB pixels only)
  • uint8arrays join -> all uint8array
  • all uint8array -> string(filename & dataUri)
  • string split "," -> filename & dataUri
  • download dataUri as filename

Licence

MIT Licence