Ecosyste.ms: Awesome

An open API service indexing awesome lists of open source software.

Awesome Lists | Featured Topics | Projects

https://github.com/cleasbycode/pdvrdt

Hide files within a PNG cover image using this steganography-like privacy tool. Post images on X/Twitter, Mastodon, Reddit and other hosting sites.
https://github.com/cleasbycode/pdvrdt

compression conceal cpp encryption flickr hacking-tool hidden-files hidden-message hide-data hide-files hide-files-in-image icc-profile infosec mastodon png privacy privacy-tools steganography twitter x-platform

Last synced: about 2 months ago
JSON representation

Hide files within a PNG cover image using this steganography-like privacy tool. Post images on X/Twitter, Mastodon, Reddit and other hosting sites.

Awesome Lists containing this project

README 

        
# pdvrdt



Use CLI tools ***pdvin*** & ***pdvout*** with a ***PNG*** image, to embed or extract any file, up to **2GB** (cover image + data file).

 

Compatible hosting sites, ***listed below***, have their own ***much smaller*** image size limits:-

* ***Flickr*** (**200MB**), ***ImgBB*** (**32MB**), ***PostImage*** (**32MB**), ***Reddit*** (**19MB** / ***-r option***),

* ***Mastodon*** (**16MB** / ***-m option***), ***ImgPile*** (**8MB**), \****X/Twitter*** (**5MB** + ***Dimension limits***)



*There are many other image hosting sites on the web that may also be compatible.*  



![Demo Image](https://github.com/CleasbyCode/pdvrdt/blob/main/demo_image/prdt_86068.png)  

***Image credit:*** [***@carochan_me***](https://x.com/carochan_me) / ***PIN: 2512678412***



Your embedded data file is ***compressed*** (depending on file type) and ***encrypted*** with PIN protection.  

## Usage (Linux - pdvin / pdvout)



```console



user1@linuxbox:~/Downloads/pdvrdt-main/src/pdvin$ g++ main.cpp -O2 -lz -s -o pdvin

user1@linuxbox:~/Downloads/pdvrdt-main/src/pdvin$ sudo cp pdvin /usr/bin



user1@linuxbox:~/Desktop$ pdvin 



Usage: pdvin [-m|-r]    

       pdvin --info



user1@linuxbox:~/Desktop$ pdvin my_cover_image.png document.pdf

  

Saved "file-embedded" PNG image: prdt_17627.png (1245285 bytes).



Recovery PIN: [***3483965536***]



Important: Please remember to keep your PIN safe, so that you can extract the hidden file.



Complete!



user1@linuxbox:~/Downloads/pdvrdt-main/src/pdvout$ g++ main.cpp -O2 -lz -s -o pdvout

user1@linuxbox:~/Downloads/pdvrdt-main/src/pdvout$ sudo cp pdvout /usr/bin



user1@linuxbox:~/Desktop$ pdvout



Usage: pdvout 

       pdvout --info

        

user1@linuxbox:~/Desktop$ pdvout prdt_17627.png



PIN: **********



Extracted hidden file: document.pdf (1016540 bytes).



Complete! Please check your file.

```

By default (*no options selected*), ***pdvin*** embeds your data file within the last ***IDAT*** chunk of the ***PNG*** image.  

For ***Mastodon***, the data file is stored within the compressed ***iCCP chunk*** of the ***PNG*** image.  



To create "*file-embedded*" ***PNG*** images compatible for posting on ***Mastodon***, use the ***-m*** option with ***pdvin***.



https://github.com/user-attachments/assets/b4288b5c-c70e-48d4-a845-32da9b67c2e1



To correctly download images from ***X/Twitter*** or ***Reddit***, click the image in the post to ***fully expand it***, before saving.  



In addition to the **5MB** image size limit, ***X/Twitter*** also has the following dimension size limits.

* ***PNG-32/24*** (*Truecolor*) **68x68** Min. - **900x900** Max.

* ***PNG-8*** (*Indexed-color*) **68x68** Min. - **4096x4096** Max. 

 

https://github.com/user-attachments/assets/781d42a6-5583-4d08-80aa-a78f0d1a837d



To create "*file-embedded*" ***PNG*** images ***compatible*** for posting on ***Reddit***, use the ***-r*** option with ***pdvin***.  

From the ***Reddit*** site, click "*Create Post*" then select "*Images & Video*" tab, to post your ***PNG*** image. 



To correctly download an image from ***Flickr***, click the download arrow near the bottom right-hand corner of the page and select ***Original*** for the size of image to download.

  

*You can try the [***pdvrdt Web App***](https://cleasbycode.co.uk/pdvrdt/index/) if you don't want to download and compile the source code.*



https://github.com/user-attachments/assets/e2a16184-7f60-4d1b-afda-3facc8a67269



**ImgPile -** *You must sign in to an account before sharing your data-embedded PNG image on ImgPile*.  

		*Sharing your image without logging in, your embedded data will not be preserved.*



 My other programs you may find useful:-

 

* [pdvzip: CLI tool to embed a ZIP file within a tweetable and "executable" PNG-ZIP polyglot image.](https://github.com/CleasbyCode/pdvzip)

* [jdvrif: CLI tool to encrypt & embed any file type within a JPG image.](https://github.com/CleasbyCode/jdvrif)

* [imgprmt: CLI tool to embed an image prompt (e.g. "Midjourney") within a tweetable JPG-HTML polyglot image.](https://github.com/CleasbyCode/imgprmt)

* [pdvps: PowerShell / C++ CLI tool to encrypt & embed any file type within a tweetable & "executable" PNG image](https://github.com/CleasbyCode/pdvps)



##