Most "free" converters work by uploading your file to a server, processing it there, then sending it back —
which means a copy of your file (photos, PDFs, IDs, whatever it is) briefly or permanently sits on someone else's
machine. Lotus Convert doesn't do that. Every tool here runs using your browser's own built-in
tools — the same engine that draws web pages and plays videos — to decode, transform, and re-encode your file
directly on your computer or phone. The data never crosses the network, so there's nothing to intercept, log,
or leak. You can even disconnect your Wi-Fi after the page loads and every tool will keep working.
Concretely: image conversion uses your browser's Canvas API to decode the picture and re-export it in a new
format. PDF merging and compressing use a JavaScript PDF library running locally in a background thread.
PDF-to-image rendering uses your browser's own PDF rendering engine. Background removal downloads a small
machine-learning model once (so it can run offline afterward) and runs it locally too. In every case, the
only network activity is fetching the tool's code (and ads) — your actual file contents are never part of any
request this site makes.
Runs entirely on your device
Merge PDFs without the upload.
Drop in two or more PDFs, put them in the order you want, and combine them into one file — all processed locally in your browser.
Drop PDFs here
.pdf files — batch supported
No PDFs added yet — drop a couple above to merge them.
0 files loaded
How PDF merging works here
Your PDFs are read directly into your browser's memory and stitched together page-by-page using a
JavaScript PDF library that runs entirely client-side. The combined file is assembled and handed to you as a
download — it's never transmitted to a server in between.
Can I reorder the PDFs before merging?
Yes — use the move buttons next to each file to set the order they'll appear in the final document.
Is there a limit on how many PDFs I can merge?
No fixed limit — you can add as many as your device can comfortably hold in memory.
Can I merge PDFs without uploading them anywhere?
Yes — merging happens entirely on your device, so your files are never sent to a server. No account or sign-in is required either.
No uploads
Every tool here runs with your browser's own engine. Files never leave your device.
No limits
No file count cap, no watermark, no account required.
No install
Works in any modern browser, on desktop or mobile.