Merge PDF for Engineers
The submittal is due to the client by 5 PM and the 150 MB drawing set will not upload. If you work as one of the engineers, you have been there. Confileo's Merge PDF tool combines several PDF files into one ordered document in seconds — free, in your browser, with your files deleted automatically the moment you are done.
Start Using Merge PDF NowWhy Engineers use Merge PDF
Day to day, engineers handle technical drawings, CAD exports, specifications, inspection reports, datasheets and project submittals — exactly the kind of files this tool is built for.
- Combining drawings, specs and calculations into one numbered submittal package.
- Compressing large CAD-export PDFs so they pass the project portal limit.
- Flattening markups and stamps so the approved revision cannot be changed.
- Converting between PDF and editable formats without corrupting drawing scale.
How to merge pdf in 3 steps
- 1Upload or drag in every PDF you want to combine.
- 2Drag the files into the exact order you need.
- 3Click Merge and download the single combined PDF.
Built for the way engineers work
- ✓Handles large, drawing-heavy files without choking or downsampling detail.
- ✓Flattening locks the approved revision so site copies stay authoritative.
- ✓No install on locked-down corporate machines — runs in the browser.
Merge PDF — Frequently asked questions
Is Merge PDF free for engineers?
Yes. Handles large, drawing-heavy files without choking or downsampling detail. There is no signup, no trial and no watermark on your files.
What kind of files can engineers use Merge PDF for?
Merge PDF works with the documents engineers handle every day — technical drawings, CAD exports, specifications, inspection reports, datasheets and project submittals. A common case: Combining drawings, specs and calculations into one numbered submittal package.
Is there a limit to how many PDFs I can merge?
You can merge many files in a single batch (up to 100 MB total). Everything is processed in your session and then deleted automatically.
Will merging change the quality of my pages?
No. Pages are combined exactly as they are, with no re-compression or quality loss.
Can I reorder the files before merging?
Yes. After uploading, drag the files up or down to set the exact order, and the combined PDF follows it.
Can I merge images or Word documents with PDFs?
The merge tool combines PDF files. To include images or Word docs, convert them to PDF first with the Images to PDF or Word to PDF tool, then merge the results.
Do I need software like Adobe Acrobat to merge PDFs?
No. Merging happens entirely in your browser for free, with nothing to install on your device.
Does merging keep each file's page order?
Yes. Each file’s pages stay in their original order; only the files are joined in the sequence you set.