> For the complete documentation index, see [llms.txt](https://help.contouron.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.contouron.com/platforms/tiktok/limitations.md). # Limitations > For the complete documentation index, see [llms.txt](https://help.contouron.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.contouron.com/platforms/tiktok/limitations.md). ## Limitations ### Shop product links TikTok's posting API does not support attaching Shop product links to posts. You cannot add TikTok Shop product links to posts published through Contouron or any third-party tool. *** ### No PNG support TikTok does not accept PNG images. Convert PNG images to JPEG or WebP before posting. Max resolution: 1080 pixels. Max file size: 20 MB per image. *** ### Captions not carried over on drafts When publishing a TikTok post as a draft, captions are not carried over. After the draft is created, open the TikTok app and re-enter your caption before publishing. --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter: ``` GET https://help.contouron.com/platforms/tiktok/limitations.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.