How to merge PDFs online?

Upload files, reorder if needed and download the merged PDF.

Are PDF files sent to external servers?

No, processing happens entirely in the browser to ensure privacy.

Free Private PDF Tools — Compress, Merge, Split (No Upload)

What is PDF Tools and Why Use It

PDF Tools is a complete suite of tools for manipulating PDF files directly in your browser. No installation required, works offline, and your files never leave your device. With 5 main features - Merge, Split, Edit, Convert, and Compress - it covers all daily PDF management needs for professionals, students, and anyone working with documents.

Our PDF Tools uses modern technologies like pdf-lib and pdfjs to process files locally. No uploads to external servers means maximum privacy and instant speed even with large files.

The 5 Main Features

1. Merge PDF

Combine multiple PDF files into a single document. Perfect for:

Joining ebook chapters
Combining invoices or tax documents
Creating portfolios from separate files
Assembling reports from multiple sources

Special features:

Drag-and-drop to reorder files
Page count preview per file
Multiple simultaneous uploads

2. Split PDF

Extract specific pages or split a PDF into separate files:

Extract single pages from a long document
Separate report sections
Create excerpts from contracts
Isolate chapters from ebooks

Special features:

Thumbnail preview of every page
Custom range selection (e.g.: 1-3, 5, 7-9)
Download as ZIP or separate files
Delete pages before extraction

3. Edit PDF

Reorganize and modify PDF structure:

Reorder pages with drag-and-drop
Rotate pages by 90°, 180°, 270°
Delete unwanted pages
Advanced editor for annotations and text

Advanced editor includes:

Add text and annotations
Freehand drawing
Insert geometric shapes
Text highlighting

4. PDF Conversion

Convert between PDF and images in both directions:

Images → PDF

Supports PNG, JPG, WebP
Page formats: A4, Letter, fit to image
Multiple upload and reordering

PDF → Images

Export to PNG or JPG
Adjustable quality (10-100%)
Download as ZIP archive

5. PDF Compression

Reduce PDF file size while maintaining quality. Powered by Ghostscript WASM, our compression preserves text and vector graphics while intelligently compressing images:

Quality	Resolution	Ideal Use
Screen	72 dpi	Screen viewing, smallest files
eBook	150 dpi	Web sharing, email attachments
Printer	300 dpi	Standard printing quality
Prepress	300+ dpi	Professional printing, maximum quality

Key advantage: Unlike other browser-based tools that convert PDFs to images, our Ghostscript-powered compression preserves selectable text, hyperlinks, and vector graphics automatically.

7+ Real-World Use Cases

1. Work Document Preparation

Scenario: Quarterly report of 50+ pages

1. Merge reports from different departments (Merge)
2. Reorder sections in correct order (Edit)
3. Remove draft pages or duplicates (Edit)
4. Compress for email sending < 10MB (Compress)
5. Result: professional document ready for management

2. Tax Document Management

Scenario: Tax return preparation

1. Scan receipts as images
2. Convert images to single PDF (Convert)
3. Merge with other tax documents (Merge)
4. Result: organized tax archive

3. Photography Portfolio Creation

Scenario: Portfolio for creative job interview

1. Select best photos in JPG/PNG
2. Convert to A4 format PDF (Convert)
3. Add cover and descriptions
4. Compress for easy sharing
5. Result: professional PDF portfolio

4. Ebook Chapter Extraction

Scenario: Study only certain chapters

1. Upload complete ebook (Split)
2. Select pages of interesting chapters
3. Download as separate files
4. Result: lightweight excerpts for mobile study

5. Contract Signing and Sending

Scenario: Contract to sign and return

1. Open PDF in Edit tab
2. Use advanced editor to add signature
3. Add date and initials where required
4. Save signed document
5. Result: contract ready for sending

6. Web Optimization

Scenario: PDF to upload to website

1. Upload PDF in Compress tab
2. Select "eBook" quality (150 dpi) for best balance
3. Text and hyperlinks are automatically preserved
4. Result: lightweight PDF with selectable text

7. Visual PDF Backup

Scenario: Archive PDF as images

1. Upload PDF in Convert tab
2. Select PDF → Images
3. Choose PNG format for maximum quality
4. Download ZIP with all pages
5. Result: visual backup of every page

Code Examples: Programmatic Integration

JavaScript: Merge PDF with pdf-lib

import { PDFDocument } from 'pdf-lib';

async function mergePDFs(pdfBuffers) {
  const mergedPdf = await PDFDocument.create();

  for (const buffer of pdfBuffers) {
    const pdf = await PDFDocument.load(buffer);
    const pages = await mergedPdf.copyPages(pdf, pdf.getPageIndices());
    pages.forEach(page => mergedPdf.addPage(page));
  }

  return await mergedPdf.save();
}

// Usage
const files = await Promise.all([
  fetch('/doc1.pdf').then(r => r.arrayBuffer()),
  fetch('/doc2.pdf').then(r => r.arrayBuffer())
]);
const merged = await mergePDFs(files);
// merged is a Uint8Array of the combined PDF

JavaScript: Rotate PDF Pages

import { PDFDocument, degrees } from 'pdf-lib';

async function rotatePages(pdfBuffer, pageRotations) {
  const pdfDoc = await PDFDocument.load(pdfBuffer);
  const pages = pdfDoc.getPages();

  pageRotations.forEach(({ pageIndex, rotation }) => {
    if (pages[pageIndex]) {
      pages[pageIndex].setRotation(degrees(rotation));
    }
  });

  return await pdfDoc.save();
}

// Rotate page 1 by 90° and page 3 by 180°
const rotations = [
  { pageIndex: 0, rotation: 90 },
  { pageIndex: 2, rotation: 180 }
];
const rotated = await rotatePages(pdfBuffer, rotations);

JavaScript: Extract Specific Pages

import { PDFDocument } from 'pdf-lib';

async function extractPages(pdfBuffer, pageNumbers) {
  const sourcePdf = await PDFDocument.load(pdfBuffer);
  const newPdf = await PDFDocument.create();

  // pageNumbers is 1-indexed, copyPages wants 0-indexed
  const indices = pageNumbers.map(n => n - 1);
  const pages = await newPdf.copyPages(sourcePdf, indices);
  pages.forEach(page => newPdf.addPage(page));

  return await newPdf.save();
}

// Extract pages 1, 3, 5-7
const extracted = await extractPages(pdfBuffer, [1, 3, 5, 6, 7]);

Python: Merge PDF with PyPDF2

from PyPDF2 import PdfMerger

def merge_pdfs(pdf_paths, output_path):
    merger = PdfMerger()

    for pdf_path in pdf_paths:
        merger.append(pdf_path)

    merger.write(output_path)
    merger.close()

# Usage
merge_pdfs(['doc1.pdf', 'doc2.pdf', 'doc3.pdf'], 'merged.pdf')

Python: Compress PDF with Ghostscript

import subprocess

def compress_pdf(input_path, output_path, quality='ebook'):
    """
    quality options:
    - 'screen': 72 dpi, smallest size
    - 'ebook': 150 dpi, good for web
    - 'prepress': 300 dpi, high quality
    - 'printer': 300 dpi, print quality
    """
    subprocess.run([
        'gs', '-sDEVICE=pdfwrite',
        f'-dPDFSETTINGS=/{quality}',
        '-dNOPAUSE', '-dQUIET', '-dBATCH',
        f'-sOutputFile={output_path}',
        input_path
    ])

compress_pdf('large.pdf', 'compressed.pdf', 'ebook')

Node.js: Convert Images to PDF

import { PDFDocument } from 'pdf-lib';
import fs from 'fs/promises';

async function imagesToPdf(imagePaths, outputPath) {
  const pdfDoc = await PDFDocument.create();

  for (const imagePath of imagePaths) {
    const imageBytes = await fs.readFile(imagePath);

    let image;
    if (imagePath.endsWith('.png')) {
      image = await pdfDoc.embedPng(imageBytes);
    } else {
      image = await pdfDoc.embedJpg(imageBytes);
    }

    // A4 page in points (595.28 x 841.89)
    const page = pdfDoc.addPage([595.28, 841.89]);

    // Scale image to fit page
    const scale = Math.min(
      595.28 / image.width,
      841.89 / image.height
    );

    page.drawImage(image, {
      x: (595.28 - image.width * scale) / 2,
      y: (841.89 - image.height * scale) / 2,
      width: image.width * scale,
      height: image.height * scale
    });
  }

  const pdfBytes = await pdfDoc.save();
  await fs.writeFile(outputPath, pdfBytes);
}

await imagesToPdf(['img1.jpg', 'img2.png'], 'output.pdf');

Comparison: PDF Tools vs Alternatives

Feature	THEJORD PDF Tools	Adobe Acrobat	Smallpdf	iLovePDF
Free	100%	No (subscription)	Daily limit	Daily limit
Privacy (local)	100% offline	Desktop local	Server upload	Server upload
No registration	Not required	Required	Required for advanced	Required for advanced
File size limit	None	None	Varies	Varies
Merge	Unlimited	Unlimited	2 files free	25 files
Compression	4 levels (Ghostscript)	Advanced	3 levels	3 levels
Advanced editor	Annotations, text	Complete	Basic	Basic

FAQ - Frequently Asked Questions

Are my files uploaded to external servers?

No, never. PDF Tools processes all files locally in your browser using JavaScript. Your documents never leave your device. This guarantees total privacy and offline functionality.

Is there a file size limit?

There's no limit imposed by the tool, but very large files (100+ MB) may slow down the browser. For huge PDFs, consider splitting them into smaller parts first.

Can I process password-protected PDFs?

PDFs with editing restrictions are processed normally. PDFs with opening passwords require protection removal with other tools first.

Does compression damage text quality?

No. Our Ghostscript-powered compression automatically preserves text as vector graphics, keeping it perfectly readable and selectable. Unlike other browser-based tools that convert PDFs to images, our compression only recompresses embedded images while maintaining text, hyperlinks, and vector graphics intact.

Can I undo changes?

The original file is never modified. Every operation creates a new file. If you make a mistake, simply reload the original file.

Does it work on mobile?

Yes, the interface is responsive and works on smartphones and tablets. For large files, a device with more RAM offers better performance.

How many PDFs can I merge at once?

There's no limit. You can merge hundreds of files. The only constraint is available browser memory.

How do I maintain page order in merge?

Use drag-and-drop to reorder files in the list. The displayed order will be the order in the final PDF.

Best Practices

For Compression

Screen (72 dpi) for smallest files, screen viewing only
eBook (150 dpi) for web sharing and email - best balance
Printer (300 dpi) for documents to print
Prepress (300+ dpi) for professional printing, maximum quality
Always verify result before deleting original

For Merging

Sort files before uploading to save time
Check sizes of resulting files
Use descriptive names to easily identify files

For Conversion

PNG for quality - lossless, ideal for text and graphics
JPG for size - smaller, good for photos
Quality 90%+ for important documents
Quality 70% for fast web sharing

Security and Privacy

Zero upload: Files stay on your device
No tracking: We don't collect data about your documents
Open source: Code is verifiable
HTTPS: Always encrypted connection
Local memory: Files are not permanently saved

Related Tools on THEJORD

Base64 Encoder - Encode files for embedding
Diff Checker - Compare text documents
JSON Formatter - Format structured data
QR Code Generator - Create QR codes for document links

External Resources

pdf-lib - JavaScript PDF library
PDF.js - Mozilla PDF viewer
PDF Specifications (Adobe)

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