'PDFminer: extract text with its font information
I find this question, but it uses command line, and I do not want to call a Python script in command line using subprocess and parse HTML files to get the font information.
I want to use PDFminer as a library, and I find this question, but they are just all about extracting plain texts, without other information such as font name, font size, and so on.
Solution 1:[1]
#!/usr/bin/env python
from pdfminer.pdfparser import PDFParser
from pdfminer.pdfdocument import PDFDocument
from pdfminer.pdfpage import PDFPage
from pdfminer.pdfinterp import PDFResourceManager
from pdfminer.pdfinterp import PDFPageInterpreter
from pdfminer.layout import LAParams
from pdfminer.converter import PDFPageAggregator
import pdfminer
def createPDFDoc(fpath):
fp = open(fpath, 'rb')
parser = PDFParser(fp)
document = PDFDocument(parser, password='')
# Check if the document allows text extraction. If not, abort.
if not document.is_extractable:
raise "Not extractable"
else:
return document
def createDeviceInterpreter():
rsrcmgr = PDFResourceManager()
laparams = LAParams()
device = PDFPageAggregator(rsrcmgr, laparams=laparams)
interpreter = PDFPageInterpreter(rsrcmgr, device)
return device, interpreter
def parse_obj(objs):
for obj in objs:
if isinstance(obj, pdfminer.layout.LTTextBox):
for o in obj._objs:
if isinstance(o,pdfminer.layout.LTTextLine):
text=o.get_text()
if text.strip():
for c in o._objs:
if isinstance(c, pdfminer.layout.LTChar):
print "fontname %s"%c.fontname
# if it's a container, recurse
elif isinstance(obj, pdfminer.layout.LTFigure):
parse_obj(obj._objs)
else:
pass
document=createPDFDoc("/tmp/simple.pdf")
device,interpreter=createDeviceInterpreter()
pages=PDFPage.create_pages(document)
interpreter.process_page(pages.next())
layout = device.get_result()
parse_obj(layout._objs)
Solution 2:[2]
This approach does not use PDFMiner but does the trick.
First, convert the PDF document into docx. Using python-docx you can then retrieve font information. Here's an example of getting all the bold text
from docx import *
document = Document('/path/to/file.docx')
for para in document.paragraphs:
for run in para.runs:
if run.bold:
print run.text
If you really want to use PDFMiner you can try this. Passing '-t' would convert the PDF into HTML with all the font information.
Solution 3:[3]
I hope this could help you :)
Get the font-family:
if isinstance(c, pdfminer.layout.LTChar):
print (c.fontname)
Get the font-size:
if isinstance(c, pdfminer.layout.LTChar):
print (c.size)
Get the font-positon:
if isinstance(c, pdfminer.layout.LTChar):
print (c.bbox)
Get the info of image:
if isinstance(obj, pdfminer.layout.LTImage):
outputImg = "<Image>\n"
outputImg += ("name: %s, " % obj.name)
outputImg += ("x: %f, " % obj.bbox[0])
outputImg += ("y: %f\n" % obj.bbox[1])
outputImg += ("width1: %f, " % obj.width)
outputImg += ("height1: %f, " % obj.height)
outputImg += ("width2: %f, " % obj.stream.attrs['Width'])
outputImg += ("height2: %f\n" % obj.stream.attrs['Height'])
print (outputImg)
Solution 4:[4]
If you want to get the font size or font name from a PDF file using PDF miner library you have to interpret the whole pdf page. You should decide for which word, phrase do you want to get font size and font name(as on a page you can have multiple words with different font sizes). The structure using PDF miner for a page: PDFPageInterpreter -> LTTextBox -> LTChar Once you found out for which word you want to get font size you call: size method for font size(which actually is height), and fontname for font. Code should look like this, you pass the pdf file path, word for which you want to get font size and the page number(on which page is the searched word):
def get_fontsize_and_fontname_for_word(self, pdf_path, word, page_number):
resource_manager = PDFResourceManager()
layout_params = LAParams()
device = PDFPageAggregator(resource_manager, laparams=layout_params)
pdf_file = file(pdf_path, 'rb')
pdf_page_interpreter = PDFPageInterpreter(resource_manager, device)
global actual_font_size_pt, actual_font_name
for current_page_number, page in enumerate(PDFPage.get_pages(pdf_file)):
if current_page_number == int(page_number) - 1:
pdf_page_interpreter.process_page(page)
layout = device.get_result()
for textbox_element in layout:
if isinstance(textbox_element, LTTextBox):
for line in textbox_element:
word_from_textbox = line.get_text().strip()
if word in word_from_textbox:
for char in line:
if isinstance(char, LTChar):
# convert pixels to points
actual_font_size_pt = int(char.size) * 72 / 96
# remove prefixed font name, such as QTBAAA+
actual_font_name = char.fontname[7:]
pdf_file.close()
device.close()
return actual_font_size_pt, actual_font_name
You could check what other properties LTChar class supports
Solution 5:[5]
Have a look at PDFlib, it can extract font info as you require and has a Python library you can import in your scripts and work with it.
Solution 6:[6]
Full disclosure, I am one of the maintainers of pdfminer.six. It is a community-maintained version of pdfminer for python 3.
Nowadays, pdfminer.six has multiple API's to extract text and information from a PDF. For programmatically extracting information I would advice to use extract_pages(). This allows you to inspect all of the elements on a page, ordered in a meaningful hierarchy created by the layout algorithm.
The following example is a pythonic way of showing all the elements in the hierachy. It uses the simple1.pdf from the samples directory of pdfminer.six.
from pathlib import Path
from typing import Iterable, Any
from pdfminer.high_level import extract_pages
def show_ltitem_hierarchy(o: Any, depth=0):
"""Show location and text of LTItem and all its descendants"""
if depth == 0:
print('element fontname text')
print('------------------------------ -------------------- -----')
print(
f'{get_indented_name(o, depth):<30.30s} '
f'{get_optional_fontinfo(o):<20.20s} '
f'{get_optional_text(o)}'
)
if isinstance(o, Iterable):
for i in o:
show_ltitem_hierarchy(i, depth=depth + 1)
def get_indented_name(o: Any, depth: int) -> str:
"""Indented name of class"""
return ' ' * depth + o.__class__.__name__
def get_optional_fontinfo(o: Any) -> str:
"""Font info of LTChar if available, otherwise empty string"""
if hasattr(o, 'fontname') and hasattr(o, 'size'):
return f'{o.fontname} {round(o.size)}pt'
return ''
def get_optional_text(o: Any) -> str:
"""Text of LTItem if available, otherwise empty string"""
if hasattr(o, 'get_text'):
return o.get_text().strip()
return ''
path = Path('~/Downloads/simple1.pdf').expanduser()
pages = extract_pages(path)
show_ltitem_hierarchy(pages)
The output shows the different elements in the hierarchy, the font name and size if available and the text that this element contains.
element fontname text
------------------------------ -------------------- -----
generator
LTPage
LTTextBoxHorizontal Hello
LTTextLineHorizontal Hello
LTChar Helvetica 24pt H
LTChar Helvetica 24pt e
LTChar Helvetica 24pt l
LTChar Helvetica 24pt l
LTChar Helvetica 24pt o
LTChar Helvetica 24pt
LTAnno
LTTextBoxHorizontal World
LTTextLineHorizontal World
LTChar Helvetica 24pt W
LTChar Helvetica 24pt o
LTChar Helvetica 24pt r
LTChar Helvetica 24pt l
LTChar Helvetica 24pt d
LTAnno
LTTextBoxHorizontal Hello
LTTextLineHorizontal Hello
LTChar Helvetica 24pt H
LTChar Helvetica 24pt e
LTChar Helvetica 24pt l
LTChar Helvetica 24pt l
LTChar Helvetica 24pt o
LTChar Helvetica 24pt
LTAnno
LTTextBoxHorizontal World
LTTextLineHorizontal World
LTChar Helvetica 24pt W
LTChar Helvetica 24pt o
LTChar Helvetica 24pt r
LTChar Helvetica 24pt l
LTChar Helvetica 24pt d
LTAnno
LTTextBoxHorizontal H e l l o
LTTextLineHorizontal H e l l o
LTChar Helvetica 24pt H
LTAnno
LTChar Helvetica 24pt e
LTAnno
LTChar Helvetica 24pt l
LTAnno
LTChar Helvetica 24pt l
LTAnno
LTChar Helvetica 24pt o
LTAnno
LTChar Helvetica 24pt
LTAnno
LTTextBoxHorizontal W o r l d
LTTextLineHorizontal W o r l d
LTChar Helvetica 24pt W
LTAnno
LTChar Helvetica 24pt o
LTAnno
LTChar Helvetica 24pt r
LTAnno
LTChar Helvetica 24pt l
LTAnno
LTChar Helvetica 24pt d
LTAnno
LTTextBoxHorizontal H e l l o
LTTextLineHorizontal H e l l o
LTChar Helvetica 24pt H
LTAnno
LTChar Helvetica 24pt e
LTAnno
LTChar Helvetica 24pt l
LTAnno
LTChar Helvetica 24pt l
LTAnno
LTChar Helvetica 24pt o
LTAnno
LTChar Helvetica 24pt
LTAnno
LTTextBoxHorizontal W o r l d
LTTextLineHorizontal W o r l d
LTChar Helvetica 24pt W
LTAnno
LTChar Helvetica 24pt o
LTAnno
LTChar Helvetica 24pt r
LTAnno
LTChar Helvetica 24pt l
LTAnno
LTChar Helvetica 24pt d
LTAnno
(Similar answer here, here and here , I'll try to keep them in sync.)
Solution 7:[7]
Some informations are in lower level, in the LTChar class. It seems logic because font size, italic, bold, etc, can be applied to a single character.
More infos here : https://github.com/euske/pdfminer/blob/master/pdfminer/layout.py#L222
But I'm still confuse about font color not in this class
Sources
This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.
Source: Stack Overflow
| Solution | Source |
|---|---|
| Solution 1 | Emilia Apostolova |
| Solution 2 | Community |
| Solution 3 | Ying Style |
| Solution 4 | adambogdan1993 |
| Solution 5 | gplayer |
| Solution 6 | Pieter |
| Solution 7 | Heraknos |