SEERSeerKits

Merge PDF Files Online

Combine multiple PDFs into one document in the order you arrange. Local merging keeps contracts and reports off third-party storage — free for small files.

Local Processing

Drag and drop your file here

or click to browse from your device

pdf

Maximum file size: 50 MB

Import fromOneDrive URLs supported

Supported Formats

File types you can use with PDF Merger.

Supported Input Formats

pdf

Available Output Formats

pdf

Usage Limits

Free tier limits for PDF Merger on the web.

  • Max file size

    50 MB per file

  • Daily free uses

    10 conversions per day

  • Batch limit

    Up to 10 files at once

Need more? Try the Seer app for expanded limits.

Privacy & Processing

Related Tools

PDF Splitter
Extract page ranges or split every page into separate files. Fast local splitting for invoices, chapters, and scanned batches — no account needed.
Open tool →
PDF Compressor
Shrink PDF file size for email and uploads by optimizing images and streams. Local compression where supported — free tier for documents under 50 MB.
Open tool →
Image to PDF
Turn JPG, PNG, and WebP photos into a single PDF portfolio or multi-page scan. Local assembly — free for small batches, no account required.
Open tool →

How to Use

How to merge PDFs with SeerKits

  1. 1

    Upload PDF files

    Add every document you want in the final packet. Drag rows to reorder pages.

  2. 2

    Review page order

    Confirm sequence thumbnails match how readers should experience the file.

  3. 3

    Merge and download

    Combine into one PDF and save. Compress with PDF Compressor if the result is too large to email.

Need more power?

Take PDF Merger further with Seer PDF

The web tool is perfect for quick jobs. When you need bigger files, batch workflows, or pro-grade controls, continue in the Seer app ecosystem — same privacy-first approach, more headroom.

  • Larger file limits beyond the web free tier
  • Batch processing for multiple files at once
  • Advanced codec and quality options
  • Offline processing when you need it on the go
Download Seer PDF

Frequently Asked Questions

Will merging reduce PDF quality?
SeerKits merges pages without re-rasterizing text and vectors, so print quality stays intact unless you compress afterward.
Can I insert a cover page from an image?
Convert the image with Image to PDF first, then merge it at the top of your stack in PDF Merger.
Do my documents get stored on a server?
Local merge keeps files in browser memory only. Nothing is saved after you download the combined PDF, and no signup is required.