Merge PDF

Combine multiple PDF files into one — reorder them, then download. Free and 100% in your browser.

Files are merged entirely in your browser — nothing is uploaded.

How to use the Merge PDF

  1. Select your PDFs. Choose two or more PDF files from your device.
  2. Arrange them. Use the up/down buttons to set the order.
  3. Merge & download. Click Merge and your combined PDF downloads instantly.

Why use our Merge PDF

Merge any number of PDFs. Add as many files as you like and combine them into one document in a single click.
Control the order. Move files up or down so the merged PDF comes out exactly how you want.
Completely private. Your files are processed in your browser and never uploaded to a server.

Free to use — premium coming soon

FREE
  • Merge unlimited PDFs
  • Reorder before merging
  • No watermark
  • 100% private
PREMIUM
  • Remove ads
  • Save merge presets
  • Batch merge folders

About the Merge PDF

Merge PDF takes several separate PDF files and stitches them into one continuous document, with the pages laid out in whatever sequence you choose. Instead of emailing a chain of attachments or asking someone to open four files in the right order, you hand them a single, self-contained PDF. The tool keeps each page exactly as it was: fonts, vector graphics, form fields, and layout are carried over unchanged, because the original page content is copied straight into the new file rather than re-rendered or flattened to an image.

Reach for this when you are assembling something that should read as one document. Common cases include combining scanned receipts and a cover sheet for an expense claim, joining a contract with its signed signature page and appendices, bundling several monthly statements into a year-end archive, or merging chapters and a title page into one report before printing. Reordering before you merge matters here: you can drag a cover page to the front, push references to the back, and drop a stray page out of the stack so the final file flows the way a reader expects.

The merge runs entirely inside your browser. When you add files, they are read into memory as raw byte buffers; a JavaScript PDF library then copies each document's pages into a fresh PDF structure and writes out a single new file, which is offered to you as a download. There is no upload step and no server round-trip, so even a large stack of documents is processed at local speed. Adding a file, dragging it to a new position, or removing one simply updates the list before that final assembly runs.

Because nothing is transmitted, your documents never leave the device you are working on. That is a meaningful difference for anything sensitive, such as tax paperwork, medical forms, or legal contracts, where uploading to a third-party server is exactly what you want to avoid. You can confirm it yourself by opening your browser's developer tools, switching to the Network tab, and watching a merge complete with zero outbound requests carrying your files. Once you close the tab, the in-memory copies are gone.

Frequently asked questions

Are my PDF files uploaded to a server when I merge them?

No. The entire merge happens inside your browser using local JavaScript, so your files are never sent anywhere. You can verify this by opening the Network tab in your browser's developer tools during a merge and seeing no outbound requests with your documents.

Can I change the order of files before merging?

Yes. After adding your PDFs you can drag them into any order, and the final document is assembled in exactly that sequence. You can also remove a file from the list before merging if you do not want it included.

Will merging change the formatting or quality of my pages?

No. Each page's existing content, including text, fonts, and images, is copied into the combined file as-is rather than being re-rendered, so layout and quality stay the same. Merging does not compress or downscale your pages.

Is there a limit on how many files or how large a PDF I can merge?

There is no fixed file-count limit imposed by the tool, but because the work runs in your browser's memory, very large stacks of high-resolution scans use more RAM and take longer. On a typical computer, combining dozens of normal documents is no problem.

Why is my merged file larger than I expected, and can I shrink it?

The combined size is roughly the sum of the originals, since every page is preserved at full quality. If the result is too big, run it through a separate Compress PDF tool afterward to reduce image resolution and file size.

From our blog

PDF to PowerPoint: How to Turn a PDF Back Into Editable Slides

By the Super Simple Digital Tools Team · Updated June 2026

If you have ever lost the original .pptx and been left with only a PDF, you know the frustration of staring at slides you cannot edit. Converting that PDF back to PowerPoint is the shortcut: instead of retyping every heading and re-placing every image, you get a working deck where layout, text, and visuals are already positioned. The goal is not a flawless copy of the original file, but a strong head start that you finish off in your slide editor in minutes rather than hours.

The single biggest factor in how well a conversion goes is the kind of PDF you start with. A PDF that was originally exported from a presentation or document carries real, selectable text, and that text maps neatly into editable PowerPoint text boxes. A scanned PDF, by contrast, is a stack of images, so it needs OCR to become editable at all. Before converting, open the PDF and try to select a line of text with your cursor: if it highlights, you have a text-based PDF and a clean conversion ahead; if nothing selects, you are dealing with a scan that depends on OCR quality.

Once converted, plan to do a quick cleanup pass rather than treating the output as final. The most common issue is fragmented text: a paragraph that was one block in the PDF can reappear as a handful of separate text boxes, and bullets sometimes drift away from their headings. Charts are the other surprise. A graph that started in a spreadsheet usually arrives as a flat picture, so you can move and resize it but not change its numbers. Knowing this in advance saves the frustration of hunting for editable data that simply is not there.

Treat conversion as step one of a short workflow. After converting, scan each slide for misplaced text frames, merge or retype broken paragraphs, and reset the fonts to your brand typeface where decorative fonts failed to carry over. If a chart came in as an image and you need live data, rebuild it natively using the figures from the original. For decks you reuse often, apply your standard slide master afterwards so colours, spacing, and footers snap back into a consistent house style.

Finally, weigh privacy before you upload anything sensitive. Presentations routinely hold revenue figures, roadmaps, or client names, so favour a tool that converts in the browser or wipes files quickly, and avoid uploading legally restricted material to services that retain copies. With the right expectations, a text-based source PDF, and a few minutes of tidying, PDF to PowerPoint reliably saves you from rebuilding a deck you thought was gone for good.

  • Check first: try to select text in the PDF. If it highlights, expect a clean text conversion; if not, it is a scan that needs OCR.
  • Plan a cleanup pass to merge fragmented text boxes and reattach bullets to their headings rather than expecting a perfect copy.
  • Treat converted charts as images. If you need to change the numbers, rebuild the chart natively from the original figures.
  • Apply your slide master and brand fonts after converting to restore consistent colours, spacing, and typography across the deck.

Read the full guide →

Tool by the Super Simple Digital Tools Team. Reviewed by our editorial team. Free to use, no signup required.

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