Merge order
output PDF = PDF 1 + PDF 2 + PDF 3 + ...
PDF document tool
PDF Combiner / Merger
Upload and merge multiple PDF files into a single document directly in your browser.
Tool
Upload PDFs to combine
Drag PDF files into the upload area, reorder them, then merge them into one downloadable PDF.
Output
- Process the selected file or files in your browser.
- Use the download button when it appears.
- Open the output PDF and review pages before sharing.
About this tool
How it works
The EngLab PDF Combiner merges multiple PDF files into a single document using browser-based processing. It is useful for combining calculation sheets, report sections, drawings, specifications, or exported technical notes.
Workflow
Process used
Processing location
files are handled in the browser
Worked example
Example workflow
Example: upload cover.pdf, calculations.pdf, drawings.pdf, then reorder them before clicking Merge PDFs.
Guide
How to use this tool
- Select or drag multiple PDF files into the upload area.
- Reorder the files if needed before processing.
- Click Merge PDFs, then download the combined document.
Reference
What the output means
file order
The sequence used when pages are copied into the final PDF.
merged PDF
A new PDF containing pages from each uploaded file.
local processing
The browser creates the output file without a server upload step.
Assumptions and limits
Before using the PDF
- Only PDF input files are accepted.
- Very large files can take longer depending on browser memory and device performance.
- Review the merged document before issuing it as a formal engineering record.
FAQ
PDF Combiner / Merger questions
Can I reorder files before merging?
Yes. Drag files in the list to set the merge order.
Are files uploaded to a server?
The merge is performed in the browser by the PDF library used on the page.
Can I remove a file before merging?
Yes. Use the remove button beside any selected file.
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