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Letters Merge PDF Files
Combine multiple PDF files into a single document. Drag and drop your files, rearrange the order, and merge them instantly — free and secure.
About Merge PDF
Confileo's Merge PDF tool combines several PDF files into one ordered document in seconds. It works in any browser, free to start and without signup, and a file sent to our server is deleted automatically after processing.
Merging PDFs is one of the most common document tasks: combining a cover letter and CV into one file, joining scanned contract pages, or assembling chapters and reports before sending. Doing it manually with desktop software is slow and often locked behind paid features.
Confileo's Merge PDF tool joins up to 100 files in the exact order you choose. There is no page-count limit beyond the 100 MB batch size, no quality loss and no watermark — drag your files, set the order, and download a single clean PDF in seconds.
The job application stack is what this tool is used for most, and the conventional order is cover letter, CV, then certificates, then references. Order matters because whoever opens the file mostly reads the first page: start with a scanned certificate and you have spent your first impression on your weakest page. The same logic applies to a proposal — cover, then the offer, then appendices.
Merging does not re-compress pages and loses no quality, but size accumulates: five scanned files of 4 MB each produce a 20 MB document, and plenty of upload portals stop at 2 or 5 MB. The right order of operations is merge first, then compress the combined file — compressing once across a whole document gives a smaller result at better quality than compressing the parts separately.
You can combine files from different sources in one document: pages exported from Word, pages from a scanner, and images you converted to PDF. The only difference you will notice is that scanned pages stay images — not selectable, not findable by search — while the pages from Word stay text. That is normal and does not mean the merge went wrong.
If one of your files is password-protected it cannot be read until the protection is removed, and that is deliberate rather than a fault: merging never bypasses a file's protection. Remove it first, and consider re-protecting the merged document if the content warrants it.
Once merged, if this is a final copy you do not want the recipient to alter, run it through Flatten PDF to fix signatures and form fields into the pages. If the page order still is not right, use Organize PDF on the result rather than merging again.
All files are processed and then deleted from the server, and your originals are unchanged — so if the order is wrong, simply run it again.
Quick facts
- Price
- 3 credits per file (free every month: 50 credits as a guest, 300 with a free account)
- Signup
- Not required
- Max file size
- Up to 100 MB per file
- Your files
- Deleted automatically after processing
- Works on
- Any browser — desktop, tablet, mobile
- Watermark
- None on your output
How to use Merge PDF
- Upload or drag in every PDF you want to combine.
- Drag the files into the exact order you need.
- Click Merge and download the single combined PDF.
Why use Confileo
- ✓Try it free — 50 credits a month with no account and 300 a month with a free one; no watermarks and no credit card.
- ✓No signup or account required — start using it instantly.
- ✓Your files are processed securely and deleted automatically for full privacy.
- ✓Works in any browser on desktop, tablet and mobile — nothing to install.
- ✓Fast processing built to handle real, everyday document workloads.
Merge PDF — Frequently asked questions
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. It works in your browser for free, with nothing to install on your device; the files are merged on our server and deleted automatically afterwards.
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.
Can I merge PDFs that have different page sizes or orientations?
Yes. Each page keeps its own size and orientation in the merged file, so mixing A4, Letter and landscape pages works fine.
Can I merge a password-protected PDF?
Unlock it first, then add it to the merge — locked files cannot be combined until the password is removed.
What is the largest set of files I can merge at once?
You can merge files up to 100MB total in one batch, which covers most documents, scans and reports.
Is this tool really free?
You can try it free: 50 credits without an account and 300 with a free account, renewed on the 1st of every month. Every tool uses credits — file tools 3 per file and the heavy ones 12. No watermark, no credit card. Beyond the monthly credits, Pro gives open use with no credits to count, or you can buy a credit pack.
Do I need to create an account?
No. You can use the tool straight away without signing up or logging in.
Are my files safe and private?
Yes. A file sent to our servers travels over an encrypted HTTPS connection and is deleted automatically after processing; tools that work in your browser never upload it. We don't open, read or sell your files.
Does it work on my phone?
Yes. The tool runs in any modern browser, so it works the same on desktop, tablet and mobile with nothing to install.