Merge PDF

Back to Home
Mix PDF and image files freely — or drag them here
PDF JPG PNG WEBP HEIC

About this PDF merger

Merging joins several PDFs into one document, and this tool goes a step further by letting you see and rearrange every page before you commit. The files you add appear as a single grid of thumbnails; you drag pages into the order you want, rotate any that came in sideways, and delete the ones that should not be in the final bundle. Then you save once.

That matters because merging is rarely just concatenation. Assembling a submission usually means the cover letter, then two pages from one scan, then a form with page four turned the wrong way, then an appendix. Doing that as merge-then-reorder-then-rotate across three separate tools is tedious; here it is one pass.

Pages are transferred with pdf-lib’s copyPages, so nothing is rasterised and every document keeps its own fonts, text layer and vector content.

Every file you add stays in your browser’s memory. Confidential bundles — tenders, medical notes, case files — are assembled locally and never uploaded.

How to merge PDF files

  1. Add your PDFs. Drop them in together or add them one at a time. Images can be mixed in too and become pages of their own.
  2. Arrange the pages. Drag thumbnails to reorder. Click to select, then rotate or delete. Double-click a page to see it full size.
  3. Add more if needed. The Add files button appends further documents to the same grid without losing your arrangement.
  4. Save as PDF. The finished document downloads as one file with an -organized suffix.

What survives the merge

ElementPreserved
Selectable textYes — pages are copied, never rendered
Embedded fontsYes
Vector graphicsYes, at full resolution
Page rotationYes, including any you apply here
Different page sizesYes — each page keeps its own dimensions
Bookmarks and form fieldsNo — document-level structures are not carried over

Frequently asked questions

Can I control the order pages end up in?

Yes, that is the point of the grid. Every page from every file appears as a thumbnail you can drag anywhere in the sequence before saving.

Can I mix images into a merged PDF?

Yes. JPG, PNG, WebP and HEIC files can be added alongside the PDFs and each becomes a page, sized to the image at 96 DPI.

Does merging reduce quality?

No. Pages are copied as PDF objects rather than re-rendered, so text, fonts and vector artwork are preserved exactly as they were in the source files.

Is there a limit on file count or size?

No fixed limit. Everything is held in browser memory, so very large bundles are bounded by your device’s RAM rather than by an upload cap.

Are bookmarks kept?

No. Page content copies faithfully, but the document outline and form field definitions are not transferred into the merged file.

Do my files get uploaded?

No. pdf-lib assembles the merged document inside your browser and hands the finished file straight to your downloads.

Related tools