A 500 KB PDF sends instantly by email and passes almost every portal limit. Recommended compression reaches 500 KB for most scanned documents of 5–15 pages.
For photo-heavy brochures, use the Extreme level — or convert pages to JPG and rebuild at a lower DPI.
Frequently asked questions
Is 500 KB enough for a scanned contract?
Usually yes for 5–15 pages at Recommended level.
Will signatures stay visible?
Yes. Images are downsampled, not removed.
Can I compress again after compressing?
Yes, repeated passes keep shrinking slightly, with a quality cost.
Do it in the full tool
Open Compress PDF for all options, or jump straight to another step below.