Sejda states plainly that its servers process the files for you, so your PDF is uploaded to be worked on. For merging, splitting and compressing PDFs, a browser-based toolkit does those jobs on your own device, so the document is never uploaded and there is no account.
Free online PDF merger. Combine several PDF files into one document, drag the files to reorder them, then download the merged PDF. Nothing uploaded.
Open Merge PDF → Free toolFree online PDF splitter. Pull out a page range from a PDF into a new smaller document and download it, all done privately in your browser.
Open Split PDF → Free toolFree online PDF compressor. Re-save a PDF to trim its file size in your browser and see the before and after numbers. Private, nothing uploaded.
Open Compress PDF →Sejda is a well-rounded PDF suite, and its own site is upfront that although it works in the browser, its servers process the files for you and delete them afterward. That is a fair policy, but it still means a contract or statement is uploaded to be processed. Client-side tools do the everyday page-level jobs, merging, splitting and compressing, with a small library that runs inside the page you have open, so nothing is ever sent to a server.
The no-upload route is the safer default for anything confidential: bank statements, signed forms, ID scans, or documents under an NDA. Sejda offers deeper editing like changing the text inside a PDF, which genuinely needs its heavier tooling; for the common tasks of combining, splitting and shrinking files, the free local option covers them with no account and no upload.
No. Merging, splitting and compressing all run in your browser, so the document never leaves your device.
Merge, split and compress, plus related jobs like rotating, reordering and deleting pages.
No. Every tool works immediately with no sign-up and no watermark.