Why Is My PDF So Large? Common Causes & Fixes\n\nEver tried to email a PDF only to find it exceeds the 25MB attachment limit? Oversized PDFs are frustrating, but understanding the root causes makes fixing them simple.\n\n---\n\n## Top Reasons Your PDF Is Bloated\n\n1. **High-Resolution Images:** Photos embedded at 300+ DPI consume massive bytes.\n2. **Embedded Font Sets:** Multiple font families with all weights add kilobytes per page.\n3. **Scanned Pages:** Scanning as raw bitmaps instead of optimized compression creates huge files.\n4. **Hidden Layers & Metadata:** Design software exports often include invisible objects.\n\n---\n\n## How to Fix an Oversized PDF\n\n1. Open the **[Compress PDF Tool](/compress-pdf)**.\n2. Upload your large document.\n3. Select Recommended or Extreme compression.\n4. Download your optimized file — often 50-90% smaller!\n\n---\n\n## Related Tools\n- [Compress PDF](/compress-pdf) – Instant size reduction.\n- [Optimize PDF](/optimize-pdf) – Structure-level optimization.\n- [Split PDF](/split-pdf) – Break large files into smaller parts.