Merge PDF

Merge multiple PDF files into one PDF online for free.

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Merge PDF Files

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PDF files · Maximum 10 files · Maximum 20 MB per file

Merge PDF Files Online for Free

Use the iToolsEra Merge PDF tool to combine two or more PDF files into one document. Add your PDFs, arrange them in the order you want, review the selected files, and download the merged PDF.

How to Merge PDF Files Online

Select or drag at least two PDF files into the upload area.
Arrange the files in your preferred order using the available controls.
Review the selected files and remove any you do not want to include.
Select Merge PDF, then download the resulting document when processing finishes.

Arrange PDFs Before Merging

The merged document follows the order of the selected PDF files. Move files up or down before merging so the pages appear in the sequence you need.

PDF File and Upload Limits

The published tool limits are up to 10 PDF files per merge and a maximum of 20 MB per file. The combined upload limit has not been independently confirmed, so check the on-page upload guidance if your files approach these limits.

Temporary PDF Processing

PDF files are uploaded for processing by the tool. The iToolsEra site states that uploaded PDFs and generated files are temporary and are automatically deleted under its PDF tools cleanup policy. Do not interpret this as browser-only processing: files are sent to the server.

When Should You Combine PDF Files?

Combining related PDFs can make documents easier to submit, share, or keep together. Common examples include reports, invoices, receipts, scanned pages, assignments, forms, notes, and supporting documents.

Frequently Asked Questions

Select at least two PDF files, arrange them in the required order, review your selection, choose Merge PDF, and download the combined document when it is ready.

Yes. The published tool limit is up to 10 PDF files in one merge. Each file must also meet the stated per-file size limit.

Yes. Use the file-order controls before processing. The merged PDF follows the order shown in the selected file list.

The published limit is 20 MB per PDF file, with up to 10 files per merge. A combined total-size limit has not been independently confirmed.

The site states that uploaded PDFs and generated merged files are temporary and automatically deleted under its PDF tools cleanup policy. The live cleanup implementation has not been independently verified.

The iToolsEra Merge PDF page is offered as a free online tool and does not require a separate desktop application.

Merging is not intended to compress your PDFs. Output characteristics can depend on the source files and processing engine, so review the downloaded document to confirm it meets your needs.

Password-protected or restricted PDFs may not merge successfully. If processing fails, check whether the file requires a password or has restrictions; exact support depends on the file and current processing engine.

A file may fail if it is damaged, invalid, unsupported, password-protected, or exceeds an upload limit. Check the files and limits, then try again with valid PDFs.