{ } tools.dcln.me

tools / pdf

PDF tools.

Merge, split, rotate, reorganize, or convert PDFs in your browser. Every operation runs on your device — your files are never uploaded.

Combine multiple PDFs into one. Drag to reorder, then download.

Drop PDFs here

or

Stays on your device. Nothing is uploaded.

How it works

  1. 01 Pick a mode. The tab bar at the top of the toolkit lists the six operations. Each one has its own controls.
  2. 02 Add your files. Drag and drop into the box, or click to pick. Some modes take one file, others take many.
  3. 03 Run & download. The work runs in a background thread in your browser. When it’s done, the result is offered for download.

FAQ

Is this really private? Do my PDFs get uploaded?
No. Every operation runs in your browser using WebAssembly-based PDF libraries (pdf-lib for writes, pdf.js for renders). Your PDFs are loaded into memory on your device, processed locally, and the results are offered for download. You can verify this by opening your browser's network tab — you will see no requests fired during the work.
What can this toolkit do?
Six operations: merge multiple PDFs into one; split a PDF by extracting pages or ranges; rotate pages 90/180/270°; reorganize a PDF by dragging or deleting pages with thumbnail previews; build a PDF from JPG, PNG, WebP, GIF or BMP images; and convert a PDF into JPG or PNG images (one per page, packed as a ZIP if multiple).
What's the file size limit?
There is no server-side limit because there is no server. The practical limit is your browser's available memory — typically a few hundred megabytes on desktop and somewhat less on mobile. Very large PDFs may slow down or, on memory-constrained devices, fail.
Does it work offline?
Yes, after the page has loaded once. All the libraries needed are served from this site, so once cached, you can disconnect from the internet and keep working.
Does this support password-protected PDFs?
Not yet. Encrypted PDFs need the password to be unlocked first. You can unlock them in your PDF reader and re-save without a password, then use the toolkit.
Why is it free?
Because we don't pay for servers to do the work — your device does it. The site is static HTML and CSS served from a CDN, with the work running entirely in your browser. There are no accounts, ads, or premium tiers. The source is on GitHub under the MIT license.