utilby

Merge PDF

Combine multiple PDFs and images into one document. Reorder, rotate, or remove pages before merging — all inside your browser, nothing is uploaded.

Runs in your browser · Files never uploaded

Drop PDF files here or click to browse

PDF files and images (JPG, PNG) • Multiple files supported • Processed on your device

Add two or more PDFs, drag pages into the order you want, then download one merged PDF.

How to use Merge PDF

  1. 1

    Add Your PDFs

    Drop two or more PDF files into the box, or click to browse. You can also add JPG or PNG images — each becomes a page.

  2. 2

    Arrange the Pages

    Every page appears as a thumbnail, color-coded by file. Drag pages (or use the arrows) to put them in the order you want.

  3. 3

    Tidy Up (Optional)

    Rotate sideways pages, delete pages you don't need, duplicate pages, or insert blank pages. Undo any change with Ctrl+Z.

  4. 4

    Download

    Name your file and click Download PDF. The merged document is created on your device in seconds.

How Utilby Processes PDFs Privately

Most online PDF tools upload your document to their servers. Utilby doesn't. Pages are read and rebuilt directly in your browser using pdf-lib, and thumbnails are drawn with Mozilla's PDF.js — the same engine that powers Firefox's PDF viewer.

Lossless page copying: When you merge, split, reorder, or rotate, each page is copied as-is into the new document. Text stays selectable and searchable, fonts stay embedded, and images keep their original resolution.

Works offline: After the page has loaded, you can disconnect from the internet and the tool keeps working — proof that nothing is being sent anywhere.

Questions & answers

No. Every PDF is opened and processed inside your own browser using JavaScript. Your documents are never uploaded, stored, or seen by anyone — which makes it safe for contracts, bank statements, and other confidential files.