11
votes
How to remove OCR from a PDF?
In Acrobat Pro DC, the appropriate command is "Remove Hidden Information," which is available through both the "Protect" and "Redact" tools.
On running the command, it just searches out the hidden ...
- 211
10
votes
Scanning old papers in TIFF format. Is scanning at 48-bit color worth it?
To answer how many bits of color depth you need and how it affects your results, let me start with a quick explanation of what color depth actually is.
What is color depth?
Color depth describes how ...
- 27k
7
votes
Creating and splitting large multipage TIFF images
I had the same problem today while trying to split a 1700 image, 1G tif file. 16G of memory wasn't enough, then tried having it cache on disk, but that was slow and it easily exhausted more than 100G ...
- 171
7
votes
Get the number of tiffs in a multi-tiff with command line ImageMagick?
Shorter than all of the others:
identify multipage.tif | wc -l
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7
votes
Scanning old papers in TIFF format. Is scanning at 48-bit color worth it?
I want to suck out the highest quality from that scanner, but is there
a point in scanning white paper with black ink at such a high color
depth such as the 48-bit that is the max on my scanner?
...
- 52.5k
5
votes
Scanning old papers in TIFF format. Is scanning at 48-bit color worth it?
On the other hand, there are situations where the scan itself at higher bits could be useful; e.g., when there is very little available contrast or range on the scanned materials.
In my experience, ...
- 8,935
5
votes
Accepted
Is TIFF with JPEG compression lossy?
TIFF files can be compressed OR uncompressed.
Using JPEG compression on a TIFF is certainly lossy.
However if you have the option to use LZW compression on a TIFF, that is lossless. As of course is ...
- 622
5
votes
Accepted
Converting JPEG/PNG to TIFF with Imagemagick format results in a file size about 6.5 times bigger
So I assume your question is “why the hell are TIFF images so huge?”
The answer is relatively simple: They are uncompressed by default. Both JPEG and PNG are compressed image formats with lossy and ...
- 58.9k
4
votes
Is TIFF a good file format to scan my old photos in?
I would suggest that amongst the factors to consider is your available storage space & also eventual goal.
TIFF can be huge, but they are the most 'accurate'
One you didn't mention, but that ...
- 45.6k
3
votes
Accepted
How to convert "SWOP (Coated), 20%)" CMYK TIFF to sRGB PNG and ditto CMYK JPG to sRGB JPG?
It's unlikely you will be able to do this losslessly if for no other reason than CMYK covers a different (but overlapping) color space than sRGB. Additionally, there are several algorithms for ...
- 2,782
3
votes
Creating and splitting large multipage TIFF images
I find @tarikki's answer one of the best, because it really doesn't hang the server nor does it eat RAM and disk space, and it's fast.
Some improvements that helped me:
replace END=2000 by END=$(...
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3
votes
How to remove OCR from a PDF?
In Acrobat Pro: use 'remove hidden information' (under 'protection'). Select all, execute, OCR is gone
- 31
3
votes
How to remove OCR from a PDF?
If, as you say, the documents are scanned and not printed to PDF from Word for example, you can easily remove with your Adobe:
Select Document, Examine Document and now you can remove the hidden text (...
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2
votes
How to split a multipage TIFF file on Windows?
Adobe Acrobat can do this natively (I'm using Acrobat DC on Win 10; I doubt the Acrobat Reader can do this but I have not checked).
Just open the multi-page TIFF in Acrobat then save as TIFF under a ...
2
votes
How to remove OCR from a PDF?
Try the "MS Print to PDF" driver. It ships with all recent Windows versions. Make sure to check "Print As Image" under advanced settings to remove OCR.
The quality loss in printing to PDF is ...
- 229
2
votes
How to convert TIFF to PDF using Ghostscript
Ghostscript doesn't support TIFF as an input, so you can't immediately use it to turn a TIFF file into a PDF. You might be better to use an image editing application such as ImageMagick.
For anyone ...
- 306
2
votes
How to find (or sort into sub-folder) multiple TIFF images with layers and/or transparency?
According to my tests and these three pages, multi-layer or multi-page TIFFs have the PageNumber tag and transparent TIFFs have the ExtraSamples tag set to either 1 or 2.
Once you know this it is ...
- 55.7k
2
votes
How do I convert a JPEG file into a black and white (1-bit) monochrome TIFF in Ubuntu?
TIFF files can hold JPEG data, and ImageMagick is trying to save your image as a monochrome JPEG (inside the TIFF), which is not possible.
Add +compress or -compress lzw in your command to force ...
- 374
2
votes
How can I convert a multipage tiff to a lossless movie on the command line?
Workaround
FFmpeg does not support multipage tiff yet, even in 2021! In the actual FFmpeg feature ticket, I found a workaround: use convert (from ImageMagick) to pipe individual images to FFmpeg.
Ref:...
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2
votes
Accepted
How to Split a Multipage Tiff File on Macintosh?
Open the tiff file in Preview. It works in versions 5-9 and in Mac OS at least back as far as Snow Leopard. Make sure the thumbnails are visible in the sidebar. Click and drag the thumbnail to the ...
- 36
2
votes
Accepted
Opening a TIFF file on a specific page from the command line
First of all this command:
cmd /c D:\mytiff.tiff
does nothing more then invoking the open command that is associated with the .tiff extension. Users can assign any application to an extension with ...
- 1,124
1
vote
TIFF to TEXT, or index TIFF files based on text content
I would like to be able to search the content of these (tiff) files.
Two solutions are presented below, for Windows and for Linux.
Windows Solution
You can install the TIFF IFilter.
Windows® ...
- 152k
1
vote
Accepted
How to clean cut a region from Tiff image?
Cut a region = Crop, using GIMP, www.gimp.org
Select the crop tool
Frame the portion you wish to keep
Press ENTER
Export (File menu) as TIFF
A video on the cropping, plus a resize
https://www....
- 8,547
1
vote
How to convert TIFF to PDF using Ghostscript
Is there any particular reason for using Ghostscript?
If you have gs installed, you very probably also have Image Magick's convert command. This article discusses some aspects of the quality factor ...
- 687
1
vote
Export MS-Word drawings to TIFF and EPS
Group the drawings and copy it.
Open power point and past it in a blank layout.
Right click and select save as picture and select .tif and save.
If you want to save as EPS format you can follow these ...
- 146
1
vote
Scanning old papers in TIFF format. Is scanning at 48-bit color worth it?
As you reduce the bit quality, you'll begin to introduce artifacts as the system has to approximate color values. This will become noticeable at very low bit depths, such as 2- or 4-bit scans. For ...
- 2,983
1
vote
Can TIFF images store embedded thumbnails in them like JPEG (JPG) files can?
According to FreeImage Documentation http://downloads.sourceforge.net/freeimage/FreeImage3170.pdf , which is a library used by various software programs that work with images, thumbnails can be set ...
- 292
1
vote
How to remove OCR from a PDF?
Use the PitStop Pro Acrobat Plug In, in the "Actions List ", create a new action, in the upper right, look for" Select text fragment "and" Remove selected object ", run ...
- 11
1
vote
How to remove OCR from a PDF?
Easy way to remove OCR layer from PDF: open PDF in Firefox and "print" into another PDF.
Note that "nice" PDF (e.g. created by MS Word) will become much larger (in my case, from 0....
1
vote
How to remove OCR from a PDF?
I solved it by exporting to JPEG, then from JPEG 'combine files in acrobat'. This is from a doc that was originally a word doc and had been converted to PDF. OCR is gone.
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