Some merging tools reserve their best output for paying customers, stamping free results with a watermark or holding a combined file behind a login. ThothBox keeps it simple: you can merge PDFs without a watermark and without any kind of signup. Combine your files, download a clean result, and move on.
The merge is processed client-side in your browser, so there is no upload and no account to gate the download. You add your PDFs, combine them, and save the result whenever you are ready.
No watermark is added to your combined document, and no registration is required at any step.
The absence of a login is part of the design. Many tools collect an email address or push a free tier that leaves a mark on your output. ThothBox neither requires registration nor adds a watermark, because the processing is done locally in your browser and there is no server-side pipeline to monetize with upselling.
Practically, this means the steps are few and the result is yours. Add your files, place them in order, merge, and you have a clean combined PDF downloaded to your device.
No. ThothBox does not add a watermark to your merged document, and the output is free to download.
Yes. Merging PDFs in the browser is free with no hidden fees.
No account, login, or email address is required.
No. The merge runs in your browser and your PDFs are never uploaded.
Yes, it runs in modern mobile browsers and processes files locally on your phone.
Files are handled on your device, so limits depend on your browser’s memory rather than a server quota. Very large documents may take longer or reach browser resource limits.