Merge PDF
WEBMerge and combine multiple PDF files into one document, in any order — free and right in your browser. Nothing is uploaded.
Combine several PDFs into one file, in order.
Add at least one file to continue.
100% private — files never leave your browser.
Need more than this?Edit, sign, merge, split, protect, compress and convert PDFs — all in one free live workspace.Open PDF Editor ProWhat is the Merge PDF tool?
Merge PDF combines two or more PDF files into a single document, in any order you choose — and unlike most online PDF mergers, it never uploads your files anywhere. The whole merge runs inside your browser, so contracts, bank statements, scans and anything else you combine stay on your device from start to finish. There is no sign-up, no watermark and no file limit, and the tool is completely free.
Add the PDFs you want to join, then drag the file cards into the order you want — the combined PDF follows your arrangement exactly. It is the quickest way to combine PDF files into one: a cover letter and CV for a job application, separately scanned pages of one agreement, or a stack of invoices you need to send in a single email. Pages are copied as they are, so text, images, embedded fonts and layout come through untouched, with no re-compression and nothing stamped on your pages.
Because everything is client-side, you can merge PDF online from your phone just as easily as from a desktop — open the page on Android or iPhone, pick your files and join PDFs without installing an app. Once the page has loaded, the merge itself even works with the connection off, and the finished file downloads straight to your device.
How to use the Merge PDF
- Click «Add files» or drag your PDF files into the tool — add every document you want to combine.
- Drag the file cards up or down to set the exact order of the merged document.
- Check the list: the file at the top becomes the first pages of the combined PDF.
- Click «Merge PDF» — the files are joined right in your browser; nothing is uploaded.
- Download the merged PDF to your device.
Frequently asked questions
Is it safe to merge PDFs online?
With Carbide, yes — because your files are never actually sent online. The merge runs entirely in your browser on your own device, so no server or third party ever sees your documents. Upload-based tools ask you to trust their storage and deletion policies; here there is nothing stored to delete.
How do I merge PDF files for free?
Add your PDFs, drag them into order and click merge — that's all. Carbide's PDF merger is free with no sign-up, no watermark and no daily quota, on desktop and on your phone.
Is there a limit on how many files or pages I can merge?
The tool sets no cap on files or pages. Because processing happens on your device, very large merges are limited only by your browser's memory — combining documents of hundreds of pages is normally no problem.
Can I change the order of the files before merging?
Yes. Drag the file cards into any order before you merge; the combined PDF follows that order exactly, so you can put a cover page first or move an annex to the end.
How is Carbide different from iLovePDF, Smallpdf or Adobe for merging?
The main difference is where the work happens. Those services upload your files to their servers to merge them; Carbide merges locally in your browser, so nothing is transmitted and there is no account or paid tier involved. The end result — one combined PDF — is the same.
Does merging change the quality or content of my PDFs?
No. Merging copies pages exactly as they are — text, images, embedded fonts and formatting are preserved, and nothing is re-compressed or watermarked.
Can I merge password-protected PDFs?
Not directly — a protected file can't be read without its password. Remove the password first (for example by saving an unlocked copy from a PDF reader that has the password), then merge the unlocked files.
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