How to get `pdftotext` to output text in a readable encoding?
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I converted a PDF file into a txt file using pdftotext. As an example, I have the sentence "This is the first study on the functional relevance of", notice the f in "first"; when I process this sentence through GATE I get "first" distorted as "�rst". Also, in "proteins were isolated from episomally transfected HEK293EBNA cells and purified by affinity chromatography on a", some words that contain a character looks like f but it not f is distorted as well "proteins were isolated from episomally transfected hek293ebna cells and puri�ed by af�nity chromatography on a".
How can I get pdftotext to output text in a readable encoding?
text-processing pdf
edited Feb 26 at 14:01
Jeff Schaller
43.8k1161141
asked Mar 20 '15 at 15:29
hamidhamid
1612
add a comment |
I converted a PDF file into a txt file using pdftotext. As an example, I have the sentence "This is the first study on the functional relevance of", notice the f in "first"; when I process this sentence through GATE I get "first" distorted as "�rst". Also, in "proteins were isolated from episomally transfected HEK293EBNA cells and purified by affinity chromatography on a", some words that contain a character looks like f but it not f is distorted as well "proteins were isolated from episomally transfected hek293ebna cells and puri�ed by af�nity chromatography on a".
How can I get pdftotext to output text in a readable encoding?
text-processing pdf
edited Feb 26 at 14:01
Jeff Schaller
43.8k1161141
asked Mar 20 '15 at 15:29
hamidhamid
1612
add a comment |
I converted a PDF file into a txt file using pdftotext. As an example, I have the sentence "This is the first study on the functional relevance of", notice the f in "first"; when I process this sentence through GATE I get "first" distorted as "�rst". Also, in "proteins were isolated from episomally transfected HEK293EBNA cells and purified by affinity chromatography on a", some words that contain a character looks like f but it not f is distorted as well "proteins were isolated from episomally transfected hek293ebna cells and puri�ed by af�nity chromatography on a".
How can I get pdftotext to output text in a readable encoding?
text-processing pdf
edited Feb 26 at 14:01
Jeff Schaller
43.8k1161141
asked Mar 20 '15 at 15:29
hamidhamid
1612
I converted a PDF file into a txt file using pdftotext. As an example, I have the sentence "This is the first study on the functional relevance of", notice the f in "first"; when I process this sentence through GATE I get "first" distorted as "�rst". Also, in "proteins were isolated from episomally transfected HEK293EBNA cells and purified by affinity chromatography on a", some words that contain a character looks like f but it not f is distorted as well "proteins were isolated from episomally transfected hek293ebna cells and puri�ed by af�nity chromatography on a".
How can I get pdftotext to output text in a readable encoding?
text-processing pdf
text-processing pdf
edited Feb 26 at 14:01
Jeff Schaller
43.8k1161141
asked Mar 20 '15 at 15:29
hamidhamid
1612
edited Feb 26 at 14:01
Jeff Schaller
43.8k1161141
asked Mar 20 '15 at 15:29
hamidhamid
1612
edited Feb 26 at 14:01
Jeff Schaller
43.8k1161141
edited Feb 26 at 14:01
Jeff Schaller
43.8k1161141
edited Feb 26 at 14:01
Jeff Schaller
43.8k1161141
43.8k1161141
asked Mar 20 '15 at 15:29
hamidhamid
1612
asked Mar 20 '15 at 15:29
hamidhamid
1612
asked Mar 20 '15 at 15:29
hamidhamid
1612
1612
add a comment |
add a comment |
2 Answers
2
active
oldest
votes
Observe that, in the text you pasted, "fi" in "first" and "ffi" in
"affinity" are ligatures (multiple characters combined into a single
glyph). Presumably, pdftotext prints each of these ligatures as a
single character, which the tools you use to read the text do not support.
As a Super User question suggests, try this:
pdftotext -enc ASCII7 input.pdf output.txt
This should prevent pdftotext from printing ligatures verbatim, forcing it to expand them into ASCII characters.
edited Mar 20 '17 at 10:18
Community♦
1
answered Mar 20 '15 at 15:48
dhagdhag
11.5k33246
add a comment |
Since I was already converting pdfs to text in Python, I post-process the pdf text using a simple Python command:
# efficient ->
# efficient
import unicodedata
pdf_text = unicodedata.normalize("NFKC", pdf_text)
answered Feb 26 at 12:52
BlaiseBlaise
1113
add a comment |
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2 Answers
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active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
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active
oldest
votes
Observe that, in the text you pasted, "fi" in "first" and "ffi" in
"affinity" are ligatures (multiple characters combined into a single
glyph). Presumably, pdftotext prints each of these ligatures as a
single character, which the tools you use to read the text do not support.
As a Super User question suggests, try this:
pdftotext -enc ASCII7 input.pdf output.txt
This should prevent pdftotext from printing ligatures verbatim, forcing it to expand them into ASCII characters.
edited Mar 20 '17 at 10:18
Community♦
1
answered Mar 20 '15 at 15:48
dhagdhag
11.5k33246
add a comment |
Observe that, in the text you pasted, "fi" in "first" and "ffi" in
"affinity" are ligatures (multiple characters combined into a single
glyph). Presumably, pdftotext prints each of these ligatures as a
single character, which the tools you use to read the text do not support.
As a Super User question suggests, try this:
pdftotext -enc ASCII7 input.pdf output.txt
This should prevent pdftotext from printing ligatures verbatim, forcing it to expand them into ASCII characters.
edited Mar 20 '17 at 10:18
Community♦
1
answered Mar 20 '15 at 15:48
dhagdhag
11.5k33246
add a comment |
Observe that, in the text you pasted, "fi" in "first" and "ffi" in
"affinity" are ligatures (multiple characters combined into a single
glyph). Presumably, pdftotext prints each of these ligatures as a
single character, which the tools you use to read the text do not support.
As a Super User question suggests, try this:
pdftotext -enc ASCII7 input.pdf output.txt
This should prevent pdftotext from printing ligatures verbatim, forcing it to expand them into ASCII characters.
edited Mar 20 '17 at 10:18
Community♦
1
answered Mar 20 '15 at 15:48
dhagdhag
11.5k33246
Observe that, in the text you pasted, "fi" in "first" and "ffi" in
"affinity" are ligatures (multiple characters combined into a single
glyph). Presumably, pdftotext prints each of these ligatures as a
single character, which the tools you use to read the text do not support.
As a Super User question suggests, try this:
pdftotext -enc ASCII7 input.pdf output.txt
This should prevent pdftotext from printing ligatures verbatim, forcing it to expand them into ASCII characters.
edited Mar 20 '17 at 10:18
Community♦
1
answered Mar 20 '15 at 15:48
dhagdhag
11.5k33246
edited Mar 20 '17 at 10:18
Community♦
1
edited Mar 20 '17 at 10:18
Community♦
1
edited Mar 20 '17 at 10:18
Community♦
1
1
answered Mar 20 '15 at 15:48
dhagdhag
11.5k33246
answered Mar 20 '15 at 15:48
dhagdhag
11.5k33246
answered Mar 20 '15 at 15:48
dhagdhag
11.5k33246
11.5k33246
add a comment |
add a comment |
Since I was already converting pdfs to text in Python, I post-process the pdf text using a simple Python command:
# efficient ->
# efficient
import unicodedata
pdf_text = unicodedata.normalize("NFKC", pdf_text)
answered Feb 26 at 12:52
BlaiseBlaise
1113
add a comment |
Since I was already converting pdfs to text in Python, I post-process the pdf text using a simple Python command:
# efficient ->
# efficient
import unicodedata
pdf_text = unicodedata.normalize("NFKC", pdf_text)
answered Feb 26 at 12:52
BlaiseBlaise
1113
add a comment |
Since I was already converting pdfs to text in Python, I post-process the pdf text using a simple Python command:
# efficient ->
# efficient
import unicodedata
pdf_text = unicodedata.normalize("NFKC", pdf_text)
answered Feb 26 at 12:52
BlaiseBlaise
1113
Since I was already converting pdfs to text in Python, I post-process the pdf text using a simple Python command:
# efficient ->
# efficient
import unicodedata
pdf_text = unicodedata.normalize("NFKC", pdf_text)
answered Feb 26 at 12:52
BlaiseBlaise
1113
answered Feb 26 at 12:52
BlaiseBlaise
1113
answered Feb 26 at 12:52
BlaiseBlaise
1113
answered Feb 26 at 12:52
BlaiseBlaise
1113
1113
add a comment |
add a comment |
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