Merge PDF
Combine multiple PDF files in your preferred order quickly and securely.
Your files are not uploaded to our server. All processing is done locally inside your web browser, and files are only saved to your device.
Drag and drop PDF files here, or click to browse
Select multiple PDF files to combine them.
⚠️Large PDF files may take longer to process depending on your browser's performance. We recommend keeping a backup of the original files before starting.
Practical guide
How PDF merging works and what to verify
This tool copies pages from each source PDF into a new document in the order you choose. It does not take screenshots of the pages, so ordinary text and vector documents retain their visual clarity while the source files remain unchanged.
Document-level features such as outlines, digital signatures, forms, and embedded attachments may not survive a merge, and existing signatures can become invalid. Review page order and interactive elements before submitting the result.
- Input
- Two or more PDFs
- Output
- One ordered PDF
- Processing
- Current browser memory
Good use cases
- ✓Combining evidence into one upload
- ✓Collecting departmental reports in order
- ✓Joining a cover, main document, and appendices
Checks after download
- •Review the first-to-last page order
- •Test outlines, internal links, and form fields
- •Confirm whether a signed document must be signed again
📝How to Use
- Drag and drop multiple PDF files into the upload zone or click to select them.
- Arrange the merging order in the file queue list by clicking ▲ or ▼ buttons.
- Remove incorrectly added files individually by clicking the ✕ button.
- When the sequence is ready, click the [Merge PDF] button.
- Once combined locally in your browser, the merged.pdf file will download automatically.
⚠️Caveats
- Protected or encrypted PDF documents cannot be merged using this tool.
- Since processing uses browser session memory, combining huge PDF files exceeding hundreds of MBs may cause the browser tab to restart depending on device RAM.
- Always keep a backup copy of your original files before processing.
❓Frequently Asked Questions (FAQ)
Q.Is there a limit to the number of PDF files I can merge?
There is no strict limit on the number of files you can add. However, because everything is processed in your local browser, merging more than 15 large documents at once might slow down the page. We recommend merging in batches if files are extremely heavy.
Q.Will text search or links still work after merging?
Ordinary text and vector pages are copied without rasterizing them, so text usually remains searchable. Document-level outlines, forms, signatures, attachments, and some links may not survive; inspect the result before submitting it.
Q.Can I use this tool offline?
The document operation runs in browser memory. Depending on browser caching, the page may continue working after it has loaded, but offline behavior is not guaranteed for every device or session.