Combine PDFs and images into a single file directly in your browser. Drag files in, drag pages to reorder, and download the merged result. Nothing is uploaded to a server, no account is required, and Culacc has no copy of your files. Works on any device with a modern browser.
Most "merge PDF" sites upload your files to a server, process them there, and send back the result. That works, but it means your files — sometimes containing contracts, ID copies, or medical paperwork — pass through someone else's infrastructure. This tool uses pdf-lib running in your browser. The combining happens locally, on your machine, in JavaScript. Your files never travel over the network.
No. Pages are recombined into a single file using pdf-lib, entirely in your browser. Nothing is sent to a server. Even Culacc has no copy.
Yes. JPG, PNG, GIF, BMP, and WebP files are converted into pages and merged with your PDFs in the order you choose.
200 MB total across all files. The browser handles the merging, so memory on your device is the only real constraint. On a laptop you can comfortably merge 50+ PDFs at once.
Yes. Switch to the Pages tab after uploading. Every page from every file appears as a draggable thumbnail you can rearrange individually or remove.
Yes. Page contents, fonts, embedded images, and layouts are preserved exactly. The merged file is a true PDF, not a re-rendered image of one.
Yes — make a free Culacc account (5 GB, every feature unlocked) and use the Save to my Culacc button. The merged PDF lands in your storage, available on every device you sync.