Batch PDF Converter

Convert Multiple Files to PDF at Once

Upload dozens of images or PDFs. Convert each to PDF, merge into one, compress, or reorder pages. All at once — free, private, instant.

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Drop your images here

or click to browse — select multiple files at once

Select Files
JPGPNG WEBPGIF BMPPDF
Grayscale
Page Numbers
0
Files
0 MB
Total Size
0
Done

Files Queue

0 files loaded
Processing files… 0%

✅ All files converted successfully!

Why Use Our Batch PDF Converter?

Process dozens of files at once — multiple modes, full control, zero uploads.

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True Batch Processing

Upload 50+ images or PDFs at once. Each file is processed in sequence with a live progress indicator per file.

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4 Conversion Modes

Merge all images into one PDF, create individual PDFs per file, merge existing PDFs, or compress a batch of PDFs.

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Advanced Options

Control page size, orientation, margins, image quality, grayscale conversion, and auto page numbering.

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100% Private

Everything runs locally in your browser using pdf-lib. No files are ever uploaded to any server.

How It Works

Simple Batch Processing

1

Choose Mode

Select your conversion mode: Images to PDF, Merge PDFs, PDF per Image, or Compress PDFs.

2

Upload Files

Drag & drop or browse to select multiple images or PDF files. Add more files anytime.

3

Configure

Set page size, quality, margins, orientation, and other options for your output.

4

Download

Click Convert — all files are processed and you get a merged PDF or individual files to download.

Frequently Asked Questions

How many files can I batch convert at once?
There is no hard limit on the number of files. You can add 50, 100, or more files to the queue. Performance depends on your device's available memory and browser. For very large batches (500+ files), we recommend processing in groups of 50–100.
What image formats are supported?
The tool supports JPG, JPEG, PNG, WEBP, GIF, and BMP image formats. It also accepts PDF files for the Merge PDFs and Compress PDFs modes. HEIC/HEIF files from iPhones are not yet supported — convert them to JPG first.
Does "Compress PDF" actually reduce file size?
Yes. The compress mode re-renders each page of the PDF as an image at a lower quality setting and re-embeds it, which significantly reduces file size for image-heavy PDFs. Text-only PDFs may see less reduction since the text is vector-based and already compact.
Can I reorder the files before converting?
Yes. The file queue shows your files in the order they will be processed. Use the Sort by Name or Reverse Order buttons to reorder the queue. The final PDF will respect this order, which is especially important when merging multiple images into a single document.
Are my files uploaded to a server?
Absolutely not. All conversion happens locally in your browser using pdf-lib and the HTML5 Canvas API. Your images and documents never leave your device. This makes the tool completely safe for confidential or sensitive files.
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