Fix: Invoice PDFs Eating SharePoint Storage (2026)

Your Invoice PDFs Are Full of Hidden Fonts

If your SharePoint storage is mysteriously full, check your invoice PDFs. Most accounting software embeds entire font libraries into each PDF — even when you're only using numbers and a few letters.

The Technical Problem

Here's what's happening: When your accounting software generates an invoice PDF, it embeds complete fonts to ensure the document displays correctly everywhere. Each font can be 1-2MB, and typical invoice templates use 3-5 fonts. That's 4-8MB of font data per invoice, mostly unused.

Why It's Worse for Freelancers

As a freelancer, you're likely hitting this issue because: 1) You generate more invoices than typical users, 2) You're probably using SharePoint's free tier with limited storage, and 3) Most invoice templates use premium fonts that are larger than standard system fonts.

The Solution: Font Subsetting

You can fix this using FreeConversion. It automatically detects and subsets fonts, keeping only the characters you actually use. No quality loss — just smaller files.

Step-by-Step Fix

1. Upload your invoice PDF to FreeConversion (processed locally in your browser)
2. Enable 'Subset fonts' in advanced options
3. Compress and download

Storage-Saving Tips

For maximum SharePoint space savings, check out our guide on optimizing PDFs for cloud storage. You can also batch process old invoices to reclaim space instantly.

Known Limitations

Some digital signature systems might complain about modified PDFs. If you use DocuSign or similar, compress before signing. Also, keep original files for tax purposes — just store them offline.