To remove hidden tracking characters or metadata from a graphic created by ChatGPT (or other AI tools), run specialized tools that strip both invisible watermarks and metadata from the image file[1][2][3].

### Detecting & Removing Invisible Data

- Metadata such as Exif, IPTC, and XMP can contain tracking information and can be removed using tools like ExifTool or online image cleaners[1][2][3].
- AI watermarks, sometimes embedded as invisible marks or pixel-level data, are harder to remove. However, re-saving, converting, or slightly modifying the image (rescaling, cropping) can sometimes break simple watermarking techniques[1][4].

### Recommended Steps

- Analyze the file with an online metadata analyzer like Compress-Or-Die or similar[2].
- To strip image metadata, run:
```
exiftool -all= your-image.png
```
This completely removes embedded metadata, including any potential tracking fields[1].
- For advanced watermarks or steganography, consider image steganalysis tools or reprocessing the image (copying, re-encoding) to potentially break undetectable tracking methods[5][3].

### Important Notes

- Most web or offline metadata cleaners only target metadata, not steganographic or pixel-level watermarks.
- Some AI systems embed undetectable watermarks at the pixel level, which may be impossible to remove without destroying image quality or using specialized adversarial tools[4][6].
- Saving screenshots of images can also bypass most forms of metadata-based tracking, at the cost of potential loss in image quality[1].

By following these methods, the majority of hidden tracking characters and metadata can be removed from AI-generated graphics[1][2][3].

Sources
[1] i removed apple's AI watermark - YouTube https://www.youtube.com/watch?v=liyxF3_WxMg
[2] Show metadata (Exif, IPTC, ICC...) hidden inside your photos https://compress-or-die.com/analyze
[3] Is there a quick way to remove metadata like what prompts, etc are ... https://www.reddit.com/r/StableDiffusion/comments/16u9f2x/is_there_a_quick_way_to_remove_metadata_like_what/
[4] Stable Signature: A new method for watermarking images created ... https://ai.meta.com/blog/stable-signature-watermarking-generative-ai/
[5] Image steganography: Concealing secrets within pixels - LevelBlue https://levelblue.com/blogs/security-essentials/image-steganography-concealing-secrets-within-pixels
[6] Invisible Watermark Technology: Resilient Against Gemini 2.0's ... https://www.imatag.com/blog/invisible-watermark-technology-resilient-against-gemini-2-0s-watermark-removal-capabilities
[7] Remove Invisible Characters from AI Text - Clean Paste https://cleanpaste.site/invisible-chars
[8] Remove hidden characters and watermarks from AI generated Text https://www.reddit.com/r/artificial/comments/1ls9acd/remove_hidden_characters_and_watermarks_from_ai/
[9] Invisible Text Detector & Remover - Originality.ai https://originality.ai/blog/invisible-text-detector-remover
[10] Another round: how to remove AI detection? : r/StableDiffusion - Reddit https://www.reddit.com/r/StableDiffusion/comments/18ueofn/another_round_how_to_remove_ai_detection/
[11] AI Text Watermark Remover | Remove Watermarks Fast & Easy https://undetectable.ai/ai-text-watermark-remover
[12] How to find hidden files inside image files (Jpg/Gif/Png) [closed] https://stackoverflow.com/questions/14451109/how-to-find-hidden-files-inside-image-files-jpg-gif-png
[13] New ChatGPT Models Seem to Leave Watermarks on Text - Rumi https://www.rumidocs.com/newsroom/new-chatgpt-models-seem-to-leave-watermarks-on-text
[14] Beginners CTF Guide: Finding Hidden Data in Images https://infosecwriteups.com/beginners-ctf-guide-finding-hidden-data-in-images-e3be9e34ae0d
[15] ChatGPT Watermark Remover and Checker | Remove AI Text ... https://gptwatermark.com
[16] AI Message Cleaner - Remove/Replace All Weird Characters https://dev.to/u4systems/ai-message-cleaner-removereplace-all-weird-characters-aoo
[17] Clean Paste – Remove Invisible Characters & AI Watermarks from Text https://cleanpaste.site
[18] How AI Leaves a Hidden Footprint in Your HTML (And How to Fix It) https://bootstrapcreative.com/how-ai-leaves-a-hidden-footprint-in-your-html-and-how-to-fix-it/
[19] Steganography, finding hidden messages in images - YouTube https://www.youtube.com/watch?v=2sKENpzPt6w
[20] Does this technology exist? - Tracking Photos? : r/Entrepreneur https://www.reddit.com/r/Entrepreneur/comments/10x4ww3/does_this_technology_exist_tracking_photos/