Dynamic Page - Highest Classification is UNCLASSIFIED//FOR OFFICIAL USE ONLY
PDF SIGINT
U//FOR OFFICIAL USE ONLY


(U) PURPOSE

     (U) The purpose of this web application is to add a steganography watermark on an image to PDF
     you disseminate for public use. The image to PDF will be embedded with your encrypted
     steganography watermarked message hidden using HTML Color Names and PDF.


     (U) Online hexdump utility lists the contents of your uploaded image in hex and ASCII
      which is useful for seeing exactly what is in your image, byte-by-byte in a text file.


     (U) How to find the right HTML Color Name?

       • (U) Select the image file you want to convert.*
       • (U) Use trial and error to choose the most suitable HTML Color Name.
       • (U) Use trial and error to find the most suitable watermark message font size.
       • (U) After uploading, An HTML color image and PDF file are created.
       • (U//FOUO) Emails from sweetpic after upload include:
              •  Your watermarked image, and PDF,
              •  A link to delete all your images anytime from your email.
       • (U) Delete all images and clear session after downloading.


  



  (U) Choose an HTML Color Name
  
  (U) HTML Color Name:   (U) HTML Color:  


   • (U) HTML Color Names are specified with 141 predefined HTML Colors.






  (U) Add an image
  
  (U) Image:    or (U) URL: 

  (U) Width    (x)   (U) Height      (U) Crop  or use example image from (U) Bing™ Wallpaper.  

  (U) Resize image by pixel: 100 - 2560


  (U) Contrast Ratio:   (U) Gamma:   (U) Threshold: 

   • (U) The contrast ratio must be set to any value above .0, to add gamma or threshold.
   • (U) Contrast Ratio min=.0 , max=.255 [.0 no color, .255 for best color results]).
   • (U) The larger the ratio value, the stronger the gamma or threshold effect.
   • (U) PDF Page size fits image by width or height.
   • (U) Orientation is set by width and height.


   (U) Classification:
   (U) This will watermark your image according to IC regulations.

      (U) Encrypted hidden watermark message:
   
  (U) Watermark message font size: 
  (U) Encrypted watermark is placed on top left of image: 

   (U) Filename Rename (Optional): 
   

   • (U) Min filename length 1 and max length 100.
   • (U) Filenames should be limited to 100 characters.
   • (U) Special characters allowed — a - z A - Z 0-9 '@ & # .

 
 




  (U) Mail To (Optional)

   (U) To (email): 
   
 

   (U) Subject: 
   
 

   (U) Message: 
   
 



   
    



     

    (U) Images must be .jpg, .png, or .gif, not exceed 5MB, and max width by height is (w)2560px (x) (h)2560px.

    (U) Some colors may not overlay vividly based on pixel bit depth and photo quality.

    (U) Your file will be securely handled and deleted after you close your browser.

    (U) This project's IC cover name is SWEETYPIC.

    (U) Over 14951 files uploaded within the last 24 months.
  
* = Downloads are in Adobe Acrobat .PDF and .JPEG file format.

Get Adobe Acrobat Reader

Visually Impaired persons will benefit from this special version of Adobe Acrobat Reader.

      
  

     
    
(U) All Classification and Control Markings on this page are for Unclassified purposes only.







  Information Owner: High Res Pics, Inc. 
  Page publisher: High Res Pics, Inc. © 2025 
  Last modified: 5/4/2025 Last reviewed: 5/4/2025