This does not bypass resize on PNGs, see Encoding Webshells in PNG IDAT chunks
This tool currently supports EXIF comment embedded payloads, and payloads after a valid file header to bypass MIME type checks
Break something? Want to add a feature? https://github.com/NinjaJc01/imagepayloadgen
Disclaimer: This tool is only to be used for legal uses such as CTF challenges.