When using the Export TT15 to PDF feature, users may encounter file size limitations, but these can vary depending on the specific settings and performance capabilities of the pdfFiller platform. Generally, pdfFiller is designed to handle reasonably large files, but if you find that your TT15 documents are too large to export comfortably, consider simplifying or segmenting your content. This ensures a smoother conversion process without compromising the quality of the resulting PDF.