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Merge PDF

Merge multiple PDF files into a single document.

✓ Free to use
⚡ Queue-powered
🔒 Privacy-first
📖 Read the use case

How it works

1

Upload your PDFs

Select two or more PDF files. Use Pro to upload larger batches.

2

We merge them in order

Files are combined in the order you uploaded them into a single PDF document.

3

Download the merged PDF

Get a single PDF containing all pages from every file you uploaded.

Quick start

Start in under 10 seconds: choose file, process, download.

No signup required. Files are automatically cleaned up based on your plan retention settings.

Step 1

Upload

Drag files in or browse from your device.

Step 2

Process

Queue runs the conversion with smart defaults.

Step 3

Download

Get your output instantly when done.

All-time runs

Live traffic

30-day success

Reliable processing

Average speed

Fast avg

Files auto-deleted
Secure processing
No signup required

Drag & drop your PDF files here

or

Max file size: 10MB

Max files per run: 1

Supported formats: depends on the tool

Max 10MB per file. Accepted formats depend on the tool.

✓ 1 image uploaded successfully

Ready to compress

✓ images uploaded successfully

Ready to compress

Advanced options

Saved tool settings

Save your current settings and apply them with one click.

Pipeline Builder

Build a multi-step flow (compress, convert, resize, merge) and run it in one upload.

Saved presets

Sign in to save and reuse pipeline presets.

Document data

Keep the first PDF as the document shell so its metadata, outlines, and page labels survive when possible.

Delivery

Linearized PDFs open faster in browsers and feel better when shared as links.

Balanced keeps defaults, Smaller pushes harder on stream/object compression, Print stays conservative for compatibility.

Files are uploaded and processed in the background. Results appear in seconds.

Your files are ready. Download:

Download all (ZIP)
Polling slowed down or failed.

PDF workspace

Keyboard: Left/Right to change page, [ or ] to rotate the focused page, +/- to zoom, 0 to reset zoom.

Delete/restore, duplication, and page rotation apply to the reordered PDF output. Bulk rotate uses the marked target pages.

Pages

Focused page

Open full PDF
Rendering page…
Blank page

Input summary

Results

✓ Complete

Conversion Summary

Original size

Result size

Compression

Saved ratio:

Original
Optimized
Original
Optimized
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💡

Tip:

Move the slider to compare the original and optimized images side-by-side. Look at the compression badge for quality metrics.

Original

Result

Saved

Reduction

Optimization Details

Original

Settings

Processing time

Download results

Choose an output format or download everything as a ZIP.

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Download JPG Download PNG Download WebP Download ZIP

We’re optimizing your image. This usually takes a few seconds.

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Results

Result statistics

Original size

Result size

Saved

Saved ratio:

Original
Cropped
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Downloads

Download JPG Download WebP Download ZIP

We’re cropping your image.

Run failed

Read-only viewer results

Your file was analyzed without conversion. No output file was generated.

Read only

File size

MIME

Pages

Sheets

Image dimensions

Workbook tabs

Preview

Uploaded image preview

PDF preview

Open in new tab

Use browser PDF controls for zoom, search, and page navigation.

PDF compression summary

Original size

Compressed size

Reduced by

Success! Your PDFs are merged. Success! Your PDF is compressed. Success! Your PDF was split. Success! Your PDF is ready. Success! Your PDF is ready.

Download your output now or save it to your workspace.

Download merged PDF Download compressed PDF Download split files Download PDF Download edited PDF ⚡ Faster processing with Pro

CSV processing summary

Input rows

Output rows

Output files

Rows removed

Output size

⚡ Process faster with Pro

Priority queue, bigger uploads, longer retention, and no daily caps.

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Bigger files
Longer retention
Priority queue

⚡ Process files faster with Pro

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Share this result

Help teammates skip manual conversions and reuse this exact output.

Smart next steps

Based on this run, here are two high-impact follow-up actions.

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About Merge PDF

Assembling a single PDF from multiple files is a common step in document workflows: combining a cover page with a report body, merging signed form pages returned separately, or packaging multiple invoices into one archive for a client. The CodeStorms Merge PDF tool combines any n...

→ Combine a cover letter, CV, and portfolio pages into one PDF for a job application. → Merge multiple signed contract pages returned separately by different signatories. → Assemble a monthly report from individual section PDFs exported by different team members. → Package multiple invoices into a single PDF before attaching them to an accounting record.

Related guides and workflows

Use case

Combine images into a single PDF (for sharing and printing)

Turn multiple JPG/PNG images into one PDF document for clients, printing, proposals, or archiving—fast and consistent.

Use case

Merge PDF files into one document (for clients and teams)

Merge multiple PDFs into a single ordered document for proposals, reports, onboarding packs, and client deliverables.

Use case

Compress a PDF for email attachments and uploads

Reduce PDF size to fit email limits and upload faster. Includes a repeatable workflow and tips for scanned PDFs and slide decks.

Guide

How to Use PDF Creator Online

Learn how to use PDF Creator online. Create a PDF from scratch — add text blocks, headings, tables, images and dividers, then export a ready-to-use PDF. No

Guide

How to Use PDF Annotate & Edit Online

Learn how to use PDF Annotate & Edit online. Add text, highlights, shapes, and signatures on top of any PDF — directly in your browser. No upload required.

Guide

How to Use PDF Editor Online

Learn how to use PDF Editor online. Edit PDF pages: reorder, delete, rotate and insert blank pages into any PDF.

📦 Supported formats 1 file types

PDF

❓ Frequently asked questions 4 answers

Free plan supports merging up to 5 files at once. Pro removes this limit.

Yes. Pages appear in the merged PDF in exactly the order you uploaded the files.

No. The merge keeps the original quality of each page. If you want to reduce file size, run the merged PDF through our PDF Compressor afterwards.

Currently, password-protected PDFs must be unlocked before merging. Use PDF utilities that handle decryption first.