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PDF Merger & Splitter

Combine several PDFs into one or split a PDF into separate files. Reorder pages with drag and drop, see a thumbnail of every page, extract a page range or pick single pages, and download the result.

Everything runs locally in your browser. Your data never leaves your device.

Upload

Drop PDFs here

One file to split it, several to merge them. Click to choose files.

They never leave your browser.

What to do

Combine the loaded PDFs into one. Drag files or single pages into order, remove pages you don't need.

Next steps

Send this tool's output straight into another tool.

PDF Compressor

Shrink a PDF's file size by re-encoding its pages at a chosen quality and resolution. See the size before and after, preview the result, and tune the quality until size and readability balance.

pdfcompress

Hash Generator

Hash text or a file with MD5, SHA-1, SHA-256, SHA-512, SHA-3, BLAKE2, BLAKE3, CRC32 and more, all computed live as you type. Compare against an expected checksum and copy any digest.

devsecurity

Checksum Validator

Verify a checksum online: drop a file, paste the expected checksum and see instantly whether they match. The hash type is detected from the checksum itself, covering MD5, SHA-1, SHA-256, SHA-512, BLAKE3, CRC-32 and more, and sha256sum lines or whole checksum files can be pasted as-is.

devsecurity

Data Compressor

Compress text or a file with gzip, deflate, brotli or Zstandard and see the size before and after, the compression ratio and how long it took. One click tries every method and recommends the smallest result.

devcompress

Data Decompressor

Decompress gzip, deflate, brotli or Zstandard data from a file or pasted Base64 and read the result as text or download it. Detects the format from the magic bytes where possible, with a manual override.

devcompress

Hex Viewer

Inspect any file or text as a hex dump with offsets, byte values and an ASCII column. Jump to an offset, search for bytes or text, select a range to see it decoded as integers and strings, and copy or download the dump.

dev

PDF Merger & Splitter

Combine several PDFs into one or split a PDF into separate files. Reorder pages with drag and drop, see a thumbnail of every page, extract a page range or pick single pages, and download the result.

pdf

PDF to Images

Render every page of a PDF as an image. Choose PNG or JPEG, set the resolution, pick single pages or a range, then download pages one by one or all at once as a zip.

pdfimageconverter

File Encryptor & Decryptor

Encrypt any file with a password using AES-256-GCM, or decrypt a file that was encrypted here. Strong key derivation and integrity protection built in.

security

About the PDF Merger & Splitter Tool

This tool merges PDFs into one file or splits a PDF into smaller ones. Drop in your files, see every page as a thumbnail, and arrange things exactly how you want before anything is written.

When merging you can drag whole files or single pages into a new order and remove pages you do not need. When splitting you can type page ranges like 1-3, 7, click pages to pick them, cut every page out as its own file, or chop the document into fixed chunks.

What you can do

  • Combine several PDF files into one document.
  • Reorder PDF pages with drag and drop before merging.
  • Remove single pages from a PDF.
  • Extract a page range like 1-3, 7 into a new PDF.
  • Split every page of a PDF into its own file.
  • Cut a PDF into chunks of a fixed page count.
  • Download several result PDFs at once as a zip.

How to use the PDF Merger & Splitter

  1. 1Drop one or more PDF files onto the upload area.
  2. 2Pick Merge or Split.
  3. 3For a merge, drag files and pages into order and remove pages you do not want.
  4. 4For a split, choose page ranges, every page, or fixed chunks. In ranges mode you can also click page thumbnails to pick them.
  5. 5Press the merge or split button, then download each result or all of them as a zip.

Page ranges, in detail

A range entry is a single page like 7 or a span like 2-5, separated by commas. A reversed span like 5-2 keeps those pages in reverse order, and listing a page twice repeats it, so ranges double as a reordering tool. When splitting by ranges you choose whether each range becomes its own PDF or all listed pages land in one file.

Password protected and damaged files

A password protected PDF cannot be opened, so the tool asks you to remove the password first. A file that is not a valid PDF is reported with a clear message instead of producing a broken result.

Send the result onward

A merged file can get large. Send it straight to the PDF Compressor to shrink it, or to the PDF to Images if you need the pages as pictures.

Credits

Open source does the heavy lifting in this tool. Thank you to:

  • pdf-lib

    A library for creating and modifying PDF documents in pure JavaScript.

  • PDF.js

    Mozilla's PDF renderer, the same engine that displays PDFs in Firefox.

Everything this site builds on is listed on the credits page.

Related tools

Images to PDF

Turn photos and images into a single PDF. Drop in JPEG, PNG or WebP files, reorder them, pick the page size, orientation and margins, and choose whether each image fills the page or keeps its own size.

pdfimageconverter

PDF Compressor

Shrink a PDF's file size by re-encoding its pages at a chosen quality and resolution. See the size before and after, preview the result, and tune the quality until size and readability balance.

pdfcompress

PDF to Images

Render every page of a PDF as an image. Choose PNG or JPEG, set the resolution, pick single pages or a range, then download pages one by one or all at once as a zip.

pdfimageconverter