for annot in page.annots(): print(annot.info["content"], annot.rect) Critical for legal discovery and research analysis. Modern AES-256 (not RC4):
Preserves original compression, form fields, and incremental updates. Essential for legal documents. Pattern #2: Hybrid Layout-Preserving Text Extraction The pain: pymupdf gives fast text but loses columns; pdfplumber gives layout but is slow. for annot in page
Use reportlab ’s Platypus with a custom BaseDocTemplate and page-by-page flushing. These are not just tricks — they are
from pypdf import PdfReader, PdfWriter reader = PdfReader("input.pdf") page = reader.pages[0] page.cropbox.lower_left = (50, 50) # crops writer = PdfWriter() writer.add_page(page) writer.write("cropped.pdf") Save with pikepdf : for annot in page.annots(): print(annot.info["content"]
with pikepdf.Pdf.open("huge.pdf") as pdf: for i in range(len(pdf.pages)): page = pdf.pages[i] # page loaded on demand process(page) Hash the byte stream of specific objects (not the whole file):
import pikepdf with pikepdf.open("original.pdf") as pdf: # Remove a page without breaking links del pdf.pages[0] # Add metadata without re-encoding images pdf.docinfo["/Title"] = "Modified Securely" pdf.save("output.pdf", compress_streams=False)
import pikepdf pdf = pikepdf.Pdf.open("scanned.pdf") for page in pdf.pages: for name, obj in page.images.items(): # Reduce image quality but keep metadata with obj.extract_to(stream=True) as img: pdf_images[name] = pikepdf.Stream(pdf, compress(img, quality=85)) pdf.save("compressed.pdf", compress_streams=True, object_stream_mode=1) Combine with OCRmyPDF for scanned docs: ocrmypdf --optimize 3 input.pdf output.pdf . These are not just tricks — they are architectural features that change how you build systems. Feature 1: Selective Page Rotation & Cropping pypdf allows cropping without decompression: