How to Keep PDF Quality While Reducing File Size on iPhone

TL;DR

PDFCrop intelligently maintains the original PDF's clarity while cropping cuts its size, and shows the file size and area-retention rate in real time — so you tighten documents without degrading them.

Steps

Crop your PDF in PDFCrop.
Watch the live file size and area-retention rate update.
Use the export preview to confirm clarity.
Export — the original quality is preserved.

Why it works this way

Trimming a page should make a file smaller without making it worse. PDFCrop keeps the underlying quality intact while cropping removes wasted area, and it shows the size and retention numbers live, so you can see the trade-off you’re making in real time instead of discovering it after export.

Tips & edge cases

Watch area-retention to gauge how much you’ve trimmed.
Export preview is your last check before saving.
Smaller and sharp — cropping cuts size without softening content.

FAQ

Does cropping lower the quality? No. PDFCrop intelligently maintains the original clarity while cropping reduces the page area and size.

Can I see the size impact? Yes. It shows the file size and area-retention rate in real time as you crop.

Is there an export preview? Yes. Preview the export to confirm the result before saving.