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PDF Tools That Don't Upload Your Files: iLovePDF vs Smallpdf vs PDF24 vs PDF Perfect (2026)
By Ayesha Iftikhar · Updated
Most free PDF websites process your file on their servers and delete it later. That's often fine, but not for every document. Here's what each popular tool says it does with your file, and how to check any site yourself.
See How PDF Perfect Works: free, no uploadShort answer: iLovePDF, Smallpdf and PDF24's online tools process files on their own servers and delete them after a set time, according to their own policies. PDF Perfect processes files in your browser, so they're never uploaded. Server-based tools can do more (OCR, Word and Excel conversions); browser-only tools keep sensitive documents on your device.
The Comparison
The retention summary below is based on each company's own published pages, checked on 5 October 2026. Policies change, so follow the links to read the current version.
- iLovePDF: files are processed on iLovePDF's servers. Its FAQ says ordinary processed files are retained for up to two hours so they can be downloaded, with a manual delete option available.
- Smallpdf: files are processed on Smallpdf's servers. Its privacy notice describes retention that varies by account and storage choices, so check the current notice for the workflow you use.
- PDF24 (online tools): files are processed on PDF24's servers. Its FAQ says online-tool files are automatically deleted within one hour and can be deleted manually sooner. PDF24 Creator is a separate Windows desktop app that can work offline.
- PDF Perfect: files are processed in your browser and never uploaded, so there is nothing to retain. No account is needed.
How to Test Any PDF Site Yourself
- Open the tool and your browser's developer tools (right-click, Inspect, then the Network tab).
- Clear the list, then process a PDF of a known size, say 5 MB.
- Look for a request of roughly that size going out. If you see one, the file was uploaded.
- Or turn off Wi-Fi after the page loads. If the tool still works, it's processing on your device.
Our How It Works page walks through both tests in Chrome, Firefox and Safari.
When Server-Based Tools Are Fine
Server tools are a reasonable choice for documents that aren't sensitive: a public brochure, a menu, lecture slides. They're also where you'll find features that are hard to do in a browser, like OCR on scanned pages or converting a PDF to an editable Word file. iLovePDF, Smallpdf and PDF24 all offer far more tools than PDF Perfect does today.
When to Use a Browser-Only Tool
- Contracts, NDAs and anything under a confidentiality agreement.
- Bank statements, tax returns, payslips and invoices.
- Medical records, prescriptions and insurance claims.
- Scans of passports, ID cards and driving licences.
- Work documents your employer doesn't allow on third-party services.