Why can't I just scan everything at the lowest setting to save storage space?

It is a reasonable instinct. Storage feels expensive, low-resolution files are small, and scanning faster seems efficient. But the lowest setting optimizes for the one thing that is actually cheap (disk space) at the expense of the things that are not: legibility, legal sufficiency, and the cost of doing the work over again.

Quality you skip is quality you can’t recover

A scan captures a fixed amount of detail. If you scan at too low a resolution or bit depth, the information that was never captured is gone for good. You cannot sharpen a blurry signature, recover a faint stamp, or read small footnotes that dissolved into noise. The original may be discarded, shredded, or simply hard to retrieve after digitization, so the image becomes your only record. A poor capture can quietly destroy the usable value of the document while leaving you a file that “looks scanned.”

A record has to do a job

Records are kept to be used, found, and trusted. Low-quality images undermine all three:

• Readability — Fine print, handwriting, and detailed forms can become illegible.
• Search and access — Optical character recognition (OCR) and full-text search depend on clean, sufficiently detailed images. Garbage in, garbage out.
• Legal and compliance value — A digitized record may need to stand in for the original in an audit, FOIA response, or court matter. An image that can’t be reliably read or authenticated may not hold up.

Storage is rarely the real cost

Storage is one of the cheapest and steadily cheaper parts of any program. The expensive parts are staff time, handling the originals, and rescanning. If a low-setting batch turns out to be unusable, you pay to pull, prep, and scan everything a second time, often after the originals are harder to find. That dwarfs any disk savings.

The better approach: match settings to use and retention

Set capture specifications based on what the records are and how long they must last. Guidelines like FADGI define resolution, bit depth, and color targets for different material types, and quality-control checks confirm you met them. Long-term and permanent records justify higher capture; routine, short-lived material can use lighter settings. The goal is “fit for purpose,” not “smallest possible.”

Explore more in the digitization and imaging topic hub.