Merge PDF Files Online for Free
Combine multiple PDF documents into a single file, right in your browser — no upload, no signup.
Files never leave your device — everything runs locally in your browser
Merging PDF files means combining two or more separate PDF documents into a single file, in whatever page order you choose. It's one of the most common tasks people run into when putting together a report from several sources, combining scanned pages with a cover letter, or assembling a set of invoices before sending them to a client. Toolevia's merge tool does this entirely inside your browser: no file is uploaded to a server, nothing is stored anywhere, and the merged PDF is generated on your own device.
How it works: add two or more PDF files, then drag them into the order you want the final document to follow. The tool reads each source file locally, copies its pages exactly as they appear — the same text, images, and layout — into a new PDF, and joins those pages end to end. Once processing finishes, you get a single download containing every page from every source file, in the sequence you set.
What carries over: the visual content of each page — text, embedded images, vector graphics, fonts, and page size — stays unchanged, because pages are copied directly rather than redrawn. What does not carry over automatically: a document's outline or bookmark tree, since merging builds a new document structure rather than reusing the originals' navigation trees; and interactive elements such as fillable form fields or digital signatures, which are tied to the specific file they were created in and can stop working or stop validating once their pages move into a different document. If any source PDF is signed or contains a form you rely on, flatten those elements first or keep a copy of the original.
Limitations: very large files, or a very high total page count across all sources, can be slow or memory-heavy to process in a browser tab, since everything runs on your device's own CPU and RAM instead of a server's. If a merge fails on a large batch, try splitting it into smaller groups of files, or close other browser tabs to free up memory. Password-protected PDFs need to be unlocked before merging — the tool can't read pages it doesn't have permission to open.
Because processing happens entirely on your device, this is a safe way to combine PDFs that contain sensitive information — contracts, ID scans, medical records — without sending them anywhere. There's no upload step, no server-side storage, and no third party ever sees the contents of your files: the merge happens, and stays, on your own device.
How it works
- Add two or more PDF files by dragging them into the tool or choosing them from your device.
- Arrange the files into the order you want them to appear in the final document.
- Click merge — the tool combines the pages locally in your browser.
- Download the merged PDF, ready to share or save.
Frequently asked questions
Is there a limit to how many PDF files I can merge?
There's no artificial cap in the tool itself — you can add as many files as you need. Very large batches (dozens of sizeable files) may process more slowly or use more memory, since everything runs on your device rather than a server.
Can I choose the order the pages end up in?
Yes. Arrange the files in the order you want them to appear before starting — pages are combined in that exact sequence, file by file.
Will bookmarks or a table of contents from my original files carry over?
No. Merging builds a new PDF structure, so each source file's outline/bookmark tree isn't automatically rebuilt in the combined document.
Are fillable form fields or digital signatures preserved?
Not reliably. Form fields and signatures are tied to the specific file they were created in and can stop working once their pages move into a merged document — flatten forms or remove signatures first if you depend on them.
Do I need to upload my files to a server?
No. Everything runs locally in your browser — your files never leave your device.
What if one of my PDFs is password-protected?
Unlock it first. The merge tool can't read pages inside an encrypted PDF it doesn't have permission to open.