Merge PDFs Fast

Free Merge PDF Tool

Combine multiple PDF files in your browser, reorder pages by file order, and download one merged PDF without uploading anything to a server.

Upload PDF files

Add two or more PDFs, reorder them, then merge into one file.

● Browser-only processing

Choose or drop PDF files PDF only. Max 500 files. Maximum total size up to 3GB. Large batches may slow the browser.

Merge order No files added yet

Your selected PDFs will appear here. Use ↑ and ↓ to reorder before merging.

Merge Summary

Check totals and export the final PDF.

Files 0

Total Pages 0

Total Size 0 B

Status Ready

Preparing... 0%

Merged PDF is ready.

Click the download button to save it to your device.

Tips

Encrypted or password-protected PDFs may fail to merge.
Up to 500 PDF files are allowed, but total size cannot exceed 3GB.
Large batches may take time to read, count pages, and merge in the browser.
For normal shared hosting, this tool stays light because files are not uploaded.
If a 3GB merge fails, the limit is usually the visitor’s browser memory, not your hosting.

Your PDF files stay on your device.

AnoxFlow does not upload, read, store, sell, or send your PDF files to our hosting, any AI service, or any third-party API. The merge process happens locally inside your browser.

Technical transparency: this tool uses the browser File API and a pinned pdf-lib browser library to merge PDF files locally. It does not use server upload forms, backend processing, cloud storage, or tracking scripts for your PDF content.