utilvo_pdf_merger 1.0.0

Lightweight Dart and Flutter library for inspecting PDF binary headers, counting pages, and merging multiple PDF byte streams.

utilvo-pdf-merger

Lightweight, zero-dependency library for inspecting PDF binary headers, counting /Type /Page objects, validating cross-reference (xref) tables, and merging multiple PDF byte streams into a single document with renumbered indirect objects.

Installation

Node.js (npm)

npm install utilvo-pdf-merger

Python (PyPI)

pip install utilvo-pdf-merger

Rust (Cargo)

cargo add utilvo-pdf-merger

Go

go get github.com/utilvo/utilvo-pdf-merger

Quick Start

JavaScript / TypeScript

import { inspectPdf, countPdfPages, mergePdfBuffers } from 'utilvo-pdf-merger';

const info = inspectPdf(pdfBytes);
console.log(info.version, info.pageCount, info.isValid);

const mergedBytes = mergePdfBuffers([pdfBufferA, pdfBufferB]);

Python

from utilvo_pdf_merger import inspect_pdf, count_pdf_pages, merge_pdf_bytes

info = inspect_pdf(pdf_bytes)
print(info["version"], info["page_count"], info["is_valid"])

merged = merge_pdf_bytes([pdf_a, pdf_b])

API Reference

Function	Parameters	Returns	Description
inspectPdf / inspect_pdf	bytes: Uint8Array | bytes	PdfInspectionResult	Extracts PDF specification version (1.4–2.0), page count, startxref offset, and %%EOF integrity status.
countPdfPages / count_pdf_pages	bytes: Uint8Array | bytes	number	Counts leaf /Type /Page dictionary entries (excluding /Type /Pages parent nodes).
mergePdfBuffers / merge_pdf_bytes	documents: Array<Uint8Array | bytes>	Uint8Array | bytes	Extracts page content streams and constructs a consolidated PDF document with a unified /Pages root and rebuilt xref table.

License

MIT