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PDF Merger

Merge PDF files client-side without upload

Drop or click to upload PDF

Up to 20 files; each file and the combined total up to 100.00 MB; up to 2000 pages in total

No files uploaded yet

Upload PDFs and select a file on the left to preview pages

Click a page thumbnail to exclude it from merge

100% in-browser — files never leave your device

SIMILAR PDF

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PDF Compressor

Compress PDF files client-side, with a non-destructive "preserve document" mode and a smaller-file "rasterize" mode

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PDF Splitter

Split a PDF by page ranges, every N pages, or custom groups — original page content is fully preserved

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JPG to PDF

Combine multiple JPG/PNG images into a single PDF, with page size, orientation and margin controls

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WHAT IS PDF MERGER?

PDF Merger lets you combine multiple PDF files into one, with full control over which pages to include and in what order. Everything happens in your browser — your files never leave your device.

Why use JoeLucky PDF Merger?

  1. 100% client-side: Files never leave your browser. No uploads, no servers, complete privacy.
  2. File limits: up to 20 PDFs, each up to 100 MB, with a 2,000-page total for the merged file. Processing is local, so there are no server upload limits.
  3. Drag to reorder: Drag file cards to set the exact merge order.
  4. Page thumbnail preview: See a thumbnail of each page before merging.
  5. Page selection: Click any thumbnail to include or exclude it. Use Select All / Deselect All for bulk control.
  6. No registration required: Upload, organize, and merge instantly.

More than just merging

  1. Extract specific pages: Upload, deselect all, then click only the pages you need to get a new PDF with just those pages.
  2. Remove blank pages: Deselect any blank pages you see in the preview to clean up scanned documents.
  3. Combine parts from different files: Upload multiple PDFs, select specific pages from each, and merge into a single document.

How to use?

  1. Drag PDF files onto the upload zone, or click to select files (multi-select supported).
  2. Drag file cards in the left list to reorder, or use the ↑↓ buttons.

Frequently asked questions

How many PDFs can I merge?

Multiple PDFs can be uploaded and merged simultaneously. Drag to reorder, then export as one PDF.

Are PDF contents uploaded to a server?

No. Everything is processed locally using pdf-lib, keeping your documents private.

Does merging reduce quality?

No. Pages are merged directly without re-compression, preserving original quality.

Open →
  • Click a file on the left to see its page thumbnails on the right. Click any thumbnail to include or exclude that page.
  • When ready, click “Merge & Download PDF” — the merged file will download automatically.