Do free PDF tools upload your files?
We read all 8 privacy policies.
We checked the official privacy policy and help docs of every major free online PDF and image tool. The answer is unanimous: all 8 upload your file to a serverto process it. Below is the evidence — each claim quoted from the tool's own documentation, with a source link.
Try the tools that don'tEvery tool we checked sends your document to its own servers, processes it there, then sends the result back. To be fair: each one encrypts the transfer and auto-deletes the file afterward (retention ranges from ~1 hour to 48 hours). Uploading isn't reckless — it's just the default architecture of the entire category.
But “encrypted and deleted later” is not the same as “never left your device.” For a contract, an NDA, a payslip, or medical scans, the most private option is the one where the file never travels at all.
The data
Free-tier figures and retention windows as stated by each tool, verified May 31, 2026.
| Tool | Your file | Kept for | Free limit | Source |
|---|---|---|---|---|
Smallpdf PDF | Uploaded | ~1 hour | Daily task limit | smallpdf.com ↗ |
iLovePDF PDF | Uploaded | ≤ 2 hours | Per-task caps (e.g. 2 files / 100 MB) | ilovepdf.com ↗ |
Adobe Acrobat (online) PDF | Uploaded | “a short time period” | 1 free task / 30 days | helpx.adobe.com ↗ |
PDF24 PDF | Uploaded | ~1 hour | No numeric cap stated | pdf24.org ↗ |
CloudConvert Convert | Uploaded | ≤ 24 hours | 10 / day · 1 GB | cloudconvert.com ↗ |
Sejda PDF | Uploaded | ~2 hours | 3 tasks / hour | sejda.com ↗ |
Convertio Convert | Uploaded | ≤ 24 hours | 10 / 24h · 1 GB | convertio.co ↗ |
TinyPNG Image | Uploaded | ≤ 48 hours | 20 images · 5 MB each | tinify.com ↗ |
WebToolVerse PDF · Image | Stays local | Never uploaded | No limit | in-browser |
The receipts
We don't ask you to take our word for it. Here is what each tool's own documentation says, verbatim:
“When you upload a document to Smallpdf, only you can see it.”
“While your files are in our servers, they are strictly secured and no one can access them.”
“Acrobat online services upload your files to Adobe cloud storage.”
“PDF files are merged in the cloud on our servers.”
“Your selected files are transferred to and temporarily stored on CloudConvert's servers.”
“Files are safely uploaded over an encrypted connection.”
“Only you — the person who uploaded and converted the file — can download the result.”
“Images uploaded to the Service are temporarily stored, optimized and deleted within 48 hours.”
How we checked
- We read each tool's own first-party pages — privacy policy, terms, security/FAQ, and help docs — on May 31, 2026. No third-party blogs.
- “Uploaded” means the tool's own documentation states the file is transferred to its servers for processing. Where a vendor also ships a separate desktop app that runs offline, that is a different product and not counted here.
- Retention windows and free-tier limits are quoted as stated; some vendors don't publish exact numbers, which we've marked accordingly. Figures can change — they reflect what was published on the verification date.
- We tested our own tools the same way you can: with the browser's Network panel open (see below).
The exception: tools that never upload
WebToolVerse runs in your browser — the file never leaves your device
Our PDF and image tools do the work locally using WebAssembly and JavaScript (pdf-lib, Canvas, and friends). There is no upload step, no server copy, and nothing to delete later — because nothing was ever sent.
Don't trust us either — verify it. Open any tool, press F12 → the Networktab, then process a file. With a tool that uploads, you'll see your file leave in a request. With ours, you'll see none.
Try it on the PDF Merger