pdf

Name: pdf
Author: ECNU-ICALK

524stars49forks

How to install pdf?

ecnu-icalk/autoskill/pdf

$npx -y skills add ECNU-ICALK/AutoSkill --skill pdf

Installs into the current project.

Summary

Use this skill whenever the user wants to do anything with PDF files. This includes reading or extracting text/tables from PDFs, combining or merging multiple PDFs into one, splitting PDFs apart, rotating pages, adding watermarks, creating new PDFs, filling PDF forms, encrypting/

Files · 1

View on GitHub

SKILL.md

1	# PDF Processing Guide
2
3	## Overview
4
5	This guide covers essential PDF processing operations using Python libraries and command-line tools. For advanced features, JavaScript libraries, and detailed examples, see REFERENCE.md. If you need to fill out a PDF form, read FORMS.md and follow its instructions.
6
7	## Quick Start
8
9	```python
10	from pypdf import PdfReader, PdfWriter
11
12	# Read a PDF
13	reader = PdfReader("document.pdf")
14	print(f"Pages: {len(reader.pages)}")
15
16	# Extract text
17	text = ""
18	for page in reader.pages:
19	text += page.extract_text()
20	```
21
22	## Python Libraries
23
24	### pypdf - Basic Operations
25
26	#### Merge PDFs
27	```python
28	from pypdf import PdfWriter, PdfReader
29
30	writer = PdfWriter()
31	for pdf_file in ["doc1.pdf", "doc2.pdf", "doc3.pdf"]:
32	reader = PdfReader(pdf_file)
33	for page in reader.pages:
34	writer.add_page(page)
35
36	with open("merged.pdf", "wb") as output:
37	writer.write(output)
38	```
39
40	#### Split PDF
41	```python
42	reader = PdfReader("input.pdf")
43	for i, page in enumerate(reader.pages):
44	writer = PdfWriter()
45	writer.add_page(page)
46	with open(f"page_{i+1}.pdf", "wb") as output:
47	writer.write(output)
48	```
49
50	#### Extract Metadata
51	```python
52	reader = PdfReader("document.pdf")
53	meta = reader.metadata
54	print(f"Title: {meta.title}")
55	print(f"Author: {meta.author}")
56	print(f"Subject: {meta.subject}")
57	print(f"Creator: {meta.creator}")
58	```
59
60	#### Rotate Pages
61	```python
62	reader = PdfReader("input.pdf")
63	writer = PdfWriter()
64
65	page = reader.pages[0]
66	page.rotate(90) # Rotate 90 degrees clockwise
67	writer.add_page(page)
68
69	with open("rotated.pdf", "wb") as output:
70	writer.write(output)
71	```
72
73	### pdfplumber - Text and Table Extraction
74
75	#### Extract Text with Layout
76	```python
77	import pdfplumber
78
79	with pdfplumber.open("document.pdf") as pdf:
80	for page in pdf.pages:
81	text = page.extract_text()
82	print(text)
83	```
84
85	#### Extract Tables
86	```python
87	with pdfplumber.open("document.pdf") as pdf:
88	for i, page in enumerate(pdf.pages):
89	tables = page.extract_tables()
90	for j, table in enumerate(tables):
91	print(f"Table {j+1} on page {i+1}:")
92	for row in table:
93	print(row)
94	```
95
96	#### Advanced Table Extraction
97	```python
98	import pandas as pd
99
100	with pdfplumber.open("document.pdf") as pdf:
101	all_tables = []
102	for page in pdf.pages:
103	tables = page.extract_tables()
104	for table in tables:
105	if table: # Check if table is not empty
106	df = pd.DataFrame(table[1:], columns=table[0])
107	all_tables.append(df)
108
109	# Combine all tables
110	if all_tables:
111	combined_df = pd.concat(all_tables, ignore_index=True)
112	combined_df.to_excel("extracted_tables.xlsx", index=False)
113	```
114
115	### reportlab - Create PDFs
116
117	#### Basic PDF Creation
118	```python
119	from reportlab.lib.pagesizes import letter
120	from reportlab.pdfgen import canvas
121
122	c = canvas.Canvas("hello.pdf", pagesize=letter)
123	width, height = letter
124
125	# Add text
126	c.drawString(100, height - 100, "Hello World!")
127	c.drawString(100, height - 120, "This is a PDF created with reportlab")
128
129	# Add a line
130	c.line(100, height - 140, 400, height - 140)
131
132	# Save
133	c.save()
134	```
135
136	#### Create PDF with Multiple Pages
137	```python
138	from reportlab.lib.pagesizes import letter
139	from reportlab.platypus import SimpleDocTemplate, Paragraph, Spacer, PageBreak
140	from reportlab.lib.styles import getSampleStyleSheet
141
142	doc = SimpleDocTemplate("report.pdf", pagesize=letter)
143	styles = getSampleStyleSheet()
144	story = []
145
146	# Add content
147	title = Paragraph("Report Title", styles['Title'])
148	story.append(title)
149	story.append(Spacer(1, 12))
150
151	body = Paragraph("This is the body of the report. " * 20, styles['Normal'])
152	story.append(body)
153	story.append(PageBreak())
154
155	# Page 2
156	story.append(Paragraph("Page 2", styles['Heading1']))
157	story.append(Paragraph("Content for page 2", styles['Normal']))
158
159	# Build PDF
160	doc.build(story)
161	```
162
163	#### Subscripts and Superscripts
164
165	IMPORTANT: Never use Unicode subscript/superscript characters (₀₁₂₃₄₅₆₇₈₉, ⁰¹²³⁴⁵⁶⁷⁸⁹) in ReportLab PDFs. The built-in fonts do not include these glyphs, causing them to render as solid black boxes.
166
167	Instead, use ReportLab's XML markup tags in Paragraph objects:
168	```python
169	from reportlab.platypus import Paragraph
170	from reportlab.lib.styles import getSampleStyleSheet
171
172	styles = getSampleStyleSheet()
173
174	# Subscripts: use <sub> tag
175	chemical = Paragraph("H<sub>2</sub>O", styles['Normal'])
176
177	# Superscripts: use <super> tag
178	squared = Paragraph("x<super>2</super> + y<s

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6 picks

Type

pdf

524stars49forks

View on GitHub

How to install pdf?

ecnu-icalk/autoskill/pdf

$npx -y skills add ECNU-ICALK/AutoSkill --skill pdf

Installs into the current project.

Summary

Files · 1

View on GitHub

SKILL.md

1	# PDF Processing Guide
2
3	## Overview
4
5	This guide covers essential PDF processing operations using Python libraries and command-line tools. For advanced features, JavaScript libraries, and detailed examples, see REFERENCE.md. If you need to fill out a PDF form, read FORMS.md and follow its instructions.
6
7	## Quick Start
8
9	```python
10	from pypdf import PdfReader, PdfWriter
11
12	# Read a PDF
13	reader = PdfReader("document.pdf")
14	print(f"Pages: {len(reader.pages)}")
15
16	# Extract text
17	text = ""
18	for page in reader.pages:
19	text += page.extract_text()
20	```
21
22	## Python Libraries
23
24	### pypdf - Basic Operations
25
26	#### Merge PDFs
27	```python
28	from pypdf import PdfWriter, PdfReader
29
30	writer = PdfWriter()
31	for pdf_file in ["doc1.pdf", "doc2.pdf", "doc3.pdf"]:
32	reader = PdfReader(pdf_file)
33	for page in reader.pages:
34	writer.add_page(page)
35
36	with open("merged.pdf", "wb") as output:
37	writer.write(output)
38	```
39
40	#### Split PDF
41	```python
42	reader = PdfReader("input.pdf")
43	for i, page in enumerate(reader.pages):
44	writer = PdfWriter()
45	writer.add_page(page)
46	with open(f"page_{i+1}.pdf", "wb") as output:
47	writer.write(output)
48	```
49
50	#### Extract Metadata
51	```python
52	reader = PdfReader("document.pdf")
53	meta = reader.metadata
54	print(f"Title: {meta.title}")
55	print(f"Author: {meta.author}")
56	print(f"Subject: {meta.subject}")
57	print(f"Creator: {meta.creator}")
58	```
59
60	#### Rotate Pages
61	```python
62	reader = PdfReader("input.pdf")
63	writer = PdfWriter()
64
65	page = reader.pages[0]
66	page.rotate(90) # Rotate 90 degrees clockwise
67	writer.add_page(page)
68
69	with open("rotated.pdf", "wb") as output:
70	writer.write(output)
71	```
72
73	### pdfplumber - Text and Table Extraction
74
75	#### Extract Text with Layout
76	```python
77	import pdfplumber
78
79	with pdfplumber.open("document.pdf") as pdf:
80	for page in pdf.pages:
81	text = page.extract_text()
82	print(text)
83	```
84
85	#### Extract Tables
86	```python
87	with pdfplumber.open("document.pdf") as pdf:
88	for i, page in enumerate(pdf.pages):
89	tables = page.extract_tables()
90	for j, table in enumerate(tables):
91	print(f"Table {j+1} on page {i+1}:")
92	for row in table:
93	print(row)
94	```
95
96	#### Advanced Table Extraction
97	```python
98	import pandas as pd
99
100	with pdfplumber.open("document.pdf") as pdf:
101	all_tables = []
102	for page in pdf.pages:
103	tables = page.extract_tables()
104	for table in tables:
105	if table: # Check if table is not empty
106	df = pd.DataFrame(table[1:], columns=table[0])
107	all_tables.append(df)
108
109	# Combine all tables
110	if all_tables:
111	combined_df = pd.concat(all_tables, ignore_index=True)
112	combined_df.to_excel("extracted_tables.xlsx", index=False)
113	```
114
115	### reportlab - Create PDFs
116
117	#### Basic PDF Creation
118	```python
119	from reportlab.lib.pagesizes import letter
120	from reportlab.pdfgen import canvas
121
122	c = canvas.Canvas("hello.pdf", pagesize=letter)
123	width, height = letter
124
125	# Add text
126	c.drawString(100, height - 100, "Hello World!")
127	c.drawString(100, height - 120, "This is a PDF created with reportlab")
128
129	# Add a line
130	c.line(100, height - 140, 400, height - 140)
131
132	# Save
133	c.save()
134	```
135
136	#### Create PDF with Multiple Pages
137	```python
138	from reportlab.lib.pagesizes import letter
139	from reportlab.platypus import SimpleDocTemplate, Paragraph, Spacer, PageBreak
140	from reportlab.lib.styles import getSampleStyleSheet
141
142	doc = SimpleDocTemplate("report.pdf", pagesize=letter)
143	styles = getSampleStyleSheet()
144	story = []
145
146	# Add content
147	title = Paragraph("Report Title", styles['Title'])
148	story.append(title)
149	story.append(Spacer(1, 12))
150
151	body = Paragraph("This is the body of the report. " * 20, styles['Normal'])
152	story.append(body)
153	story.append(PageBreak())
154
155	# Page 2
156	story.append(Paragraph("Page 2", styles['Heading1']))
157	story.append(Paragraph("Content for page 2", styles['Normal']))
158
159	# Build PDF
160	doc.build(story)
161	```
162
163	#### Subscripts and Superscripts
164
165	IMPORTANT: Never use Unicode subscript/superscript characters (₀₁₂₃₄₅₆₇₈₉, ⁰¹²³⁴⁵⁶⁷⁸⁹) in ReportLab PDFs. The built-in fonts do not include these glyphs, causing them to render as solid black boxes.
166
167	Instead, use ReportLab's XML markup tags in Paragraph objects:
168	```python
169	from reportlab.platypus import Paragraph
170	from reportlab.lib.styles import getSampleStyleSheet
171
172	styles = getSampleStyleSheet()
173
174	# Subscripts: use <sub> tag
175	chemical = Paragraph("H<sub>2</sub>O", styles['Normal'])
176
177	# Superscripts: use <super> tag
178	squared = Paragraph("x<super>2</super> + y<s

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Type