md-skill

pip install pdfplumber reportlab pypdf --break-system-packages

import pdfplumber

with pdfplumber.open("file.pdf") as pdf:
    page = pdf.pages[0]
    words = page.extract_words()
    for w in words:
        print(w["text"], w["x0"], w["x1"], w["top"], w["bottom"])

tables = page.extract_tables()
for row in tables[0]:
    print(row)

for r in page.rects:
    if r["fill"]:
        print(r["x0"], r["x1"], r["top"], r["bottom"], r["non_stroking_color"])

for c in page.chars[:5]:
    print(c["text"], c["fontname"], c["size"], c["non_stroking_color"])

from reportlab.pdfgen import canvas
import io

packet = io.BytesIO()
c = canvas.Canvas(packet, pagesize=(page.width, page.height))  # ambil dari pdfplumber
c.save()
packet.seek(0)

from reportlab.pdfbase import pdfmetrics
from reportlab.pdfbase.ttfonts import TTFont

pdfmetrics.registerFont(TTFont("MyFont", "/usr/share/fonts/truetype/liberation/LiberationSans-Bold.ttf"))
c.setFont("MyFont", 12)

c.setFillColorRGB(1, 1, 0.4)   # warna kotak (cocokkan dengan bg asli)
c.rect(x, y, w, h, fill=1, stroke=0)

c.setFillColorRGB(0, 0, 0)     # warna teks
c.drawString(x, y, "Teks Baru")

from pypdf import PdfReader, PdfWriter

reader = PdfReader("file.pdf")
writer = PdfWriter()
for page in reader.pages:
    writer.add_page(page)
writer.write(open("output.pdf", "wb"))

base_page.merge_page(overlay_page)

orig_page.merge_page(overlay_page)   # benar: overlay di atas, terlihat
writer.add_page(orig_page)

page.rotate(90)                          # rotate
writer.encrypt("user_pw", "owner_pw")    # password protect

import pdfplumber, re, io
from reportlab.pdfgen import canvas
from reportlab.pdfbase import pdfmetrics
from reportlab.pdfbase.ttfonts import TTFont
from pypdf import PdfReader, PdfWriter

pdfmetrics.registerFont(TTFont("Bold", "/usr/share/fonts/truetype/liberation/LiberationSans-Bold.ttf"))

def overlay_untuk_halaman(page, factor=1.2):
    packet = io.BytesIO()
    c = canvas.Canvas(packet, pagesize=(page.width, page.height))

    for w in page.extract_words():
        if not re.match(r"^\d{1,3}(,\d{3})+$", w["text"]):
            continue  # skip yang bukan format harga "15,000"

        harga_lama = int(w["text"].replace(",", ""))
        harga_baru = f"{round(harga_lama * factor):,}"

        # cari warna bg di belakang teks ini (default putih)
        bg = (1, 1, 1)
        for r in page.rects:
            if r["fill"] and r["x0"] <= w["x0"]+5 and r["x1"] >= w["x1"]-5 \
               and r["top"] <= w["top"]+2 and r["bottom"] >= w["bottom"]-2:
                bg = r["non_stroking_color"]
                break

        # konversi koordinat pdfplumber (top-down) -> reportlab (bottom-up)
        y_bawah = page.height - w["bottom"]
        h = w["bottom"] - w["top"]

        c.setFillColorRGB(*bg)
        c.rect(w["x0"]-2, y_bawah-1, (w["x1"]-w["x0"])+20, h+2, fill=1, stroke=0)

        c.setFillColorRGB(0, 0, 0)
        c.setFont("Bold", h*0.82)
        c.drawString(w["x0"]-4, y_bawah+1, harga_baru)

    c.save()
    packet.seek(0)
    return packet

with pdfplumber.open("price_list.pdf") as pdf:
    original = PdfReader("price_list.pdf")
    writer = PdfWriter()
    for i, page in enumerate(pdf.pages):
        overlay = PdfReader(overlay_untuk_halaman(page)).pages[0]
        orig_page = original.pages[i]
        orig_page.merge_page(overlay)   # overlay di atas, harga lama tertutup
        writer.add_page(orig_page)
    writer.write(open("price_list_updated.pdf", "wb"))