Why PDFs get too big for email
Most email providers cap attachments at 10–25 MB. A PDF with high-resolution scanned images, embedded fonts, or many pages can easily exceed this. The frustrating part is that "big" PDFs are often much larger than they need to be — most of that size is unused space.
How to compress a PDF in your browser (no software)
- Open the Compress PDF tool at pdfmono.com/compress-pdf
- Upload your PDF — drag it onto the drop zone or click to browse.
- Choose a quality level:
- High quality — small reduction, barely visible difference. Best for documents with lots of text.
- Medium quality — good balance. Recommended starting point.
- Low quality — maximum compression, noticeably lower image quality. Good for scanned forms where exact image fidelity doesn't matter.
- Click Compress and wait a few seconds.
- Download the compressed file. The result card shows the original vs. compressed size so you know exactly how much you saved.
Realistic expectations: how much compression is possible?
Compression results depend heavily on what's in your PDF:
- Scanned document (photos of pages): 50–80% size reduction is typical at Medium quality.
- Text-only PDF (exported from Word/Google Docs): 10–30% — already fairly compact.
- Mixed content (text + images): 30–60% depending on image density.
When compression isn't enough
If your PDF is still too large after compression, consider:
- Split the document and send it in parts — use Split PDF to divide it into sections.
- Convert to JPG images and send those — use PDF to JPG if the recipient only needs to view the content.
- Use a file sharing link (Google Drive, Dropbox) instead of attaching directly.