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PDF table & paragraph extractor

Project description


An ultimate pdf file disintegration tool. DePDF is designed to extract tables and paragraphs into structured markup language [eg. html] from embedding pdf pages. You can also use it to convert pdf page or pdf to html.

Built on top of pdfplumber

Checkout automatically generated documentation if you wish.

Table of Contents



pip install depdf


from depdf import DePDF
from depdf import DePage

# general
with DePDF.load('test/test.pdf') as pdf
    pdf_html = pdf.to_html

# with dedicated configurations
c = Config(
pdf = DePDF.load('test/test.pdf', config=c)
page_index = 23  # start from zero
page = pdf_file.pages[page_index]
page_soup = page.soup


functions usage
extract_page_paragraphs extract paragraphs from specific page
extract_page_tables extract tables from specific page
convert_pdf_to_html convert the entire pdf to html
convert_page_to_html convert specific page to html


In-page elements

  • Paragraph
    • Text
    • Span
  • Table
    • Cell
  • Image

Common properties

property & method explanation
html converted html string
soup converted beautiful soup
bbox bounding box region
save_html write html tag to local file

DePDF HTML structure

<div class="{pdf_class}">
    %for <!--page-{pid}-->
        <div id="page-{pid}" class="{page_class}">
            %for {in_page_elements} endfor%

DePage HTML element structure


    <span> {span-content} </span>


        <td> {cell_0_0} </td>
        <td> {cell_0_1} </td>
    <tr colspan=2>
        <td> {merged_cell_1_0} </td>


<img src="temp_depdf/$prefix.png"></img>

Configuration encyclopedia

PDF 解析

keyword detail default
logo_flag 是否分析不同页面共有的水印信息 True
header_footer_flag 是否分析不同页面共有的页眉页脚信息 True
temp_dir_prefix 是否分析不同页面共有的页眉页脚信息 temp_depdf
unique_prefix 生成临时文件图片的文件名称(一般会自动生成)


keyword detail default
table_flag 是否解析表格 True
paragraph_flag 是否解析段落 True
image_flag 是否解析图片 True
resolution debug 模式下生成页面预览图的分辨率 300
main_frame_tolerance 识别页面内主要文字区域的阈值
x_tolerance 识别页面内文本行的横向阈值
y_tolerance 识别页面内文本行的纵向阈值
page_num_top_fraction 识别页面内页码信息上边界距离和页面的高度比例
page_num_left_fraction 识别页面内页码信息
page_num_right_fraction 识别页面内页码信息


keyword detail default
multiple_columns_flag 是否识别多栏页面 True
max_columns 识别多栏页面栏数上限 3
column_region_half_width 识别多栏页面栏分界宽度
min_column_region_objects 识别多栏页面栏分界内的对象数目上限


keyword detail default
char_overlap_size 判断字符是否重叠的阈值
default_char_size 默认的字符大小
char_size_upper 探测到字符大小的上限
char_size_lower 探测到字符大小的下限


keyword detail default
dotted_line_flag 是否分析页面内的虚线
curved_line_flag 是否分析页面内的曲线
snap_flag 是否合并表格线段
add_line_flag 是否为表格增加横竖线
min_double_line_tolerance 判断线段是否为临近双线的距离下限
max_double_line_tolerance 判断线段是否为临近双线的距离上限
vertical_double_line_tolerance 判断线段是否为垂直临近双线的距离上限
table_cell_merge_tolerance 合并单元格的宽度差别容错值
skip_empty_table 是否忽略空白表格
add_vertical_lines_flag 是否增加竖线
add_horizontal_lines_flag 是否增加横线
add_horizontal_line_tolerance 增加横线的阈值


keyword detail default
min_image_size 识别图片的边长最小像素值 80
image_resolution 提取图片的分辨率 300


keyword detail default
default_head_tail_page_offset_percent 页眉页脚的错位比例


keyword detail default
log_level 日志的级别 WARNING
verbose_flag 是否输出运行中间过程信息 False
debug_flag 是否打开调试(生成解析对象的边界信息) False


keyword detail default
span_class 生成 HTML 的 span 节点的 class pdf-span
paragraph_class 生成 HTML 的 p 节点的 class pdf-paragraph
table_class 生成 HTML 的 table 节点的 class pdf-table
pdf_class 生成 HTML 的最外层 pdf div 节点的 class pdf-content
image_class 生成 HTML 的 img 节点的 class pdf-image
page_class 生成 HTML 的 page div 的 class pdf-page
mini_page_class 生成 HTML 的 mini-page div 的 class pdf-mini-page

Update log

  • 2020-03-18 add support for multiple-column PDFs
  • 2020-03-12 initial depdf release



  • add support for multiple-column pdf page
  • better table structure recognition
  • recognize embedded objects inside page elements

Project overview

├── depdf
│   ├── components
│   │   ├──
│   │   ├──
│   │   ├──
│   │   ├──
│   │   └──
│   ├──
│   ├──
│   ├──
│   ├──
│   ├──
│   ├──
│   ├──
│   ├──
│   ├──
│   ├──
│   ├──
│   └──
├── test
│   ├── test.html
│   ├── test.pdf
│   ├──
│   └── test_mc.pdf
├── annotations.jpg
└── pyproject.toml

4 directories, 33 files

DePage element denotations

Useful element properties within page

page element

Project details

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