Problem: Given an item in the Internet Archive, e.g. The works of Ralph Waldo Emerson, you may be tempted to download the PDF for its exactness. Admirable! However, my e-reader is horribly slow for opening it and turning pages. I find slow page turning aggravating; it makes me lose my train of thought and strains my reading comprehension.
Solution: Download a different format of individual images, bulk-scale them down exactly to your device's screen, then package the images back into one single file.
This extra work is well worth it for me.
-
TODO - See also PDF? I haven't tested it, but I wonder if "repairing" a PDF would also help with e-reader speed.
Tested and works with the Kobo Aura ONE
Preparation ∞
- Install IrfanView and it's plugins package.
- Download the Internet Archive item's "Single Page Processed JP2 Zip"
-
Unzip that, and notice a folder full of
.jp2
files.
Conversion ∞
- Open one of those
.jp2
files in Irfanview -
Press
t
(thumbnail view)- Wait for the thumbnails to load (You'll see the counter at the top-left of the window). If you get impatient, you can click "Stop" in the top menu.
- Press
control a
(select all) -
right-click
on an item, and pressb
(batch conversion)
Batch conversion settings:
- Work as: (o) Batch conversion
-
Batch conversion settings:
- Output format: [TIF - Tagged Image Format]
-- Click "Options" (see below) - [x] Use advanced options (for bulk resize...)
-- Click "Advanced" (see below)
- Output format: [TIF - Tagged Image Format]
-
Output directory for result files: (or placeholders, like $D)
- Click `Use current ("look in") directory
- Then append something to the end of the directory it suggests. I end mine with
out\
-
Click
Start Batch
at the bottom-left
Batch conversion settings > Options
- (o) Huffman RLE
-
[_] Save palette for greyscale images (default: ON)
Batch conversion settings > Advanced
- [x] RESIZE
-
(o) Set new size:
- (o) Set one or both sides to:
-- (These are appropriate for the Kobo Aura ONE. The settings for another e-reader may be different.)
-- Width: 1872
-- Height: 1404
- (o) Set one or both sides to:
-
Set new DPI value: 300
- (This is appropriate for the Kobo Aura ONE. The setting for another e-reader may be different.)
-
[x] CHANGE COLOR DEPTH
- (o) 2 Colors (black/white) (1 BPP)
You can also copy the below into an .ini
file, and use the Load settings
function.
Completion ∞
- Find your output directory
-
right-click
andSend to
>Compressed (zipped) folder
- Rename it to something you like. I prefer
Author - Title
-
Rename the extension from
.zip
to.cbz
- If you don't have extensions visible, then I believe you can pull up the properties of the file (
right-click
> Properties) and rename it there.
- If you don't have extensions visible, then I believe you can pull up the properties of the file (
Last updated 2024-01-09 at 11:47:49