The Enhanced PDF Image or the Multi-Resolution PDF Image
files combine monochrome (black and white) text zones with 24-bit color or
grayscale images for photographs and diagrams. Both monochrome and
color/grayscale images are represented on the same page for the best-possible
replication of the paper original. This process delivers optimum readability and
image quality at a far smaller file-size than any competing technique.
Benefits:
-
Smaller files. Most imaging bureaus deliver color by
the page, not the image. Full-page color scans
mean huge files and, often, inferior resolution
and image quality due to the sacrifices made to
keep the file size down.
-
Superior text quality. Since the text area of the
image is rendered in higher resolutions and with
lossless compression, on-screen and printed text
quality is vastly superior in Multi-Resolution
files.
Typical applications for this format include documents requiring
total graphical fidelity to the paper original while maintaining low file
size.
-
Low-cost electronic publishing
of legacy/historical materials
-
Advertising and promotional
materials
-
Academic journals and research
material
|
PDF File Type Comparison |
| |
Image |
Image + Searchable Text |
PDF Normal (Formatted Text & Graphics) |
| Accuracy |
Very high
(Page is retained as image) |
Very high
(Page is retained as image) |
High
(in effect, re-authoring the document) |
| Text searchability |
No |
Yes |
Yes |
| File size |
Large
(Typically, 40-50 KB at 300 dpi without grayscale or color images) |
Large
(Typically, 50-60 KB at 300 dpi without grayscale or color images) |
Small size
(Typically, 4–6 kb per page for simple documents) |
| Typical Application |
Budget friendly archiving |
Full-text search for bitonal files |
Tiny but rich files - great for the
web |
| Cost |
Low |
Medium |
High |
| 
