MacroKitMacroKit

PDF Merger

Combine multiple PDFs into one file. Drag to reorder, then download instantly.

100% Private
Instant Merge
No Upload
No Account

Merge PDFs in Seconds — No Upload Required

Combine multiple PDF files into a single document entirely in your browser. Drag to reorder, then download.

Merge PDFs Free
Features

Everything You Need to Merge PDFs

From drag-and-drop upload to one-click download — no server, no waiting.

01

Drag-to-Reorder

Arrange your PDF files in any order before merging.

Drag the handle next to each file to reorder. Touch devices supported.

02

Page Count Preview

See how many pages each PDF contains before you merge.

Page counts are read locally — no data leaves your browser.

03

Custom Filename

Name your merged PDF before downloading.

Type any name — the .pdf extension is added automatically.

04

Up to 5 PDFs

Combine up to 5 PDF files in a single merge operation.

Run the tool multiple times to combine more files.

05

Preserves Content

Fonts, images, and embedded content are faithfully preserved.

Uses pdf-lib to copy pages with full fidelity.

06

Instant Download

The merged PDF downloads directly to your device.

No cloud storage, no email — straight to your downloads folder.

How It Works

How to Merge PDF Files

01

Upload your PDFs

Drop up to 5 PDF files into the upload area or click to select them from your device.

0101

Upload your PDFs

Drop up to 5 PDF files into the upload area or click to select them from your device.

02

Reorder if needed

Drag the files into your desired merge order. The output PDF will follow this sequence.

0202

Reorder if needed

Drag the files into your desired merge order. The output PDF will follow this sequence.

03

Name your file

Enter a custom filename for your merged PDF. The .pdf extension is added automatically.

0303

Name your file

Enter a custom filename for your merged PDF. The .pdf extension is added automatically.

04

Merge and download

Click Merge PDFs and download your combined document instantly.

0404

Merge and download

Click Merge PDFs and download your combined document instantly.

Benefits

Why MacroKit PDF Merger?

Built for privacy-first document workflows.

Zero Upload

Your PDFs never leave your device. Merging happens entirely in your browser using pdf-lib.

No Queue

No waiting for server-side processing. Merge starts instantly when you click the button.

No Account

No signup, no email, no subscription. Open the tool and start merging immediately.

No Watermarks

Your merged PDF is clean. No branding, no watermarks, no hidden metadata added.

Works Offline

Once the page loads, you can merge PDFs without an internet connection.

Preserves Quality

pdf-lib copies pages with embedded fonts and images intact — no quality loss.

Technical Specs

How PDF Merging Works

macrokit-specs
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MacroKit uses pdf-lib — a pure JavaScript library — to merge your PDFs directly in your browser. No WASM, no server calls, no file uploads. Each PDF is read into memory, pages are copied in order, and the combined document is written as a Blob that downloads to your device.

All processing happens in your browser tab. Closing the tab cancels any in-progress merge.

Specifications
Librarypdf-lib (open source)
Max files per merge5
File size limitBrowser memory
Output formatPDF
Upload requiredNever
Supports encrypted PDFsNo (remove password first)
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Comparison

MacroKit vs Other PDF Mergers

See how browser-based merging compares to typical online tools.

MacroKit
VS
Others
Files uploaded to server
Files uploaded to server
Files uploaded to server
Account required
Account required
Account required
Watermark on output
Watermark on output
Watermark on output
Works offline
Works offline
Works offline
Drag-to-reorder
Drag-to-reorder
Drag-to-reorder
Preserves fonts & images
Preserves fonts & images
Preserves fonts & images
Free to use
Free to use
Free to use
FAQ

Frequently Asked Questions

Yes, completely free with no hidden costs, watermarks, or file limits. No account required.
No. All merging happens locally in your browser using pdf-lib. Your files never leave your device.
You can merge up to 5 PDF files in a single operation. Run the tool again to combine more.
Yes. pdf-lib copies each page along with its embedded fonts, images, and content. The output is a faithful combination of your source files.
Password-protected PDFs cannot be merged. Remove the password protection in your PDF reader first, then retry.
There is no enforced file size limit. Very large PDFs may take longer to process depending on your device's memory.
You can reorder entire PDF files before merging by dragging them into your preferred sequence. Page-level reordering within a single PDF is not supported.
Yes. The tool is fully responsive and works on mobile browsers. Touch-based drag-and-drop is supported for reordering files.

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Ready to merge your PDFs?

Drop your files above and get a merged PDF in seconds — no account, no upload.

Merge PDFs Now

Privacy & Security

MacroKit PDF Merger runs entirely in your browser using pdf-lib. No PDF data is transmitted to any server. Files are read from your local device and the merged result downloads directly to your device.