GainUtility's PDF toolkit processes files in your browser, so most PDFs stay on your device. Merge multiple PDFs, split by page range, compress file sizes, rotate pages, convert between PDF, images, and Office documents, and much more. One tool, the PDF Translator, sends extracted text to a translation service and discloses that on its page.
Pick the job rather than the tool name. Every tool below is free, needs no account, and states on its own page where the file is processed.
Three questions, and only what each service publishes about itself: does it need an account, does the file leave your device, and what the free tier allows.
| Service | Account required? | File uploaded to a server? | Free-tier limits |
|---|---|---|---|
| GainUtility How GainUtility handles files | No - the site has no accounts and no sign-up. | No for the PDF tools: they run in your browser. The PDF Translator is the exception, and it says so on its own page. | No published caps - no daily task limit and no file-size paywall. |
| Smallpdf smallpdf.com/support | No - the free plan is available to non-registered users. | Yes - the file is uploaded and transferred over TLS. | 2 conversions per day on the free plan. |
| iLovePDF ilovepdf.com/pricing ilovepdf.com blog | No - the vendor says no account or download is required. | Yes - upload the file, download the result. | Limited document processing; the vendor does not publish a number. |
| PDF2Go pdf2go.com/help pdf2go.com blog | No - the vendor states no signup is required. | Yes - the file is uploaded for processing. | 100 MB free upload cap; free daily Credits, count not published. |
| PDF24 tools.pdf24.org FAQ tools.pdf24.org | Not stated on the vendor's FAQ. | Yes - uploaded, and deleted from the server within one hour. | Free of charge and without restriction; the vendor states there are no artificial limits. |
| Sejda sejda.com/pricing | No - the pricing page states No signup required. | Yes - documents are uploaded and processed on the vendor's servers. | Page and hourly limits plus tool-specific limits; the pricing page does not publish the numbers. |
Checked 2026-10-01 against each service's own published pages.
Most tools process your PDF directly in your browser, so the file stays on your device. The PDF Translator is the exception - it sends the extracted text to a translation service, and this is disclosed on its own page.
Processing is limited by your browser's memory. Most files up to 100MB work smoothly. For very large files, try splitting first.
Yes. All PDF tools are responsive and work on smartphones and tablets through your mobile browser.