LocalPDF vs Smallpdf vs iLovePDF — Privacy Comparison
Compare browser-only PDF tools with upload-based converters. See how LocalPDF, Smallpdf, and iLovePDF differ on privacy, pricing, features, and processing method.
Feature Comparison
| Feature | LocalPDF | Smallpdf | iLovePDF |
|---|---|---|---|
| Processing | 100% browser-side | Server upload | Server upload |
| File leaves device | No | Yes | Yes |
| Account required | No | Free tier limited | Free tier limited |
| Free daily limit | Unlimited | 2 tasks/day | Limited |
| Merge PDF | ✓ | ✓ | ✓ |
| Split PDF | ✓ | ✓ | ✓ |
| Compress PDF | ✓ | ✓ | ✓ |
| Rotate PDF | ✓ | ✓ | ✓ |
| Watermark PDF | ✓ | ✓ | ✓ |
| OCR / Edit text | ✗ | ✓ | ✓ |
| Sign PDF | ✗ | ✓ | ✓ |
| Pricing | Free | $9/mo Pro | $9/mo Pro |
Privacy: How Each Tool Handles Your Files
LocalPDF — Files never leave your browser
When you use LocalPDF, your PDF is read into your browser's memory using JavaScript libraries (pdf-lib, pdf.js). All processing — merging, splitting, compressing, rotating, watermarking — happens on your device. The file bytes are never sent to any server. After processing, the result is offered as a direct download. No account, no upload, no storage.
Smallpdf — Files uploaded to their servers
Smallpdf requires you to upload your file to their servers for processing. Your file is stored temporarily (typically 1 hour for free users) while conversion happens server-side. They claim to delete files after processing, but your data does leave your device and travels over the network to their infrastructure.
iLovePDF — Files uploaded to their servers
Like Smallpdf, iLovePDF processes your files on their servers after upload. Files are deleted after 2 hours. Your documents traverse the network and are temporarily stored on third-party infrastructure before deletion.
When to Use Each Tool
Choose LocalPDF if you need quick merge/split/compress/rotate/watermark and privacy matters. Ideal for contracts, tax forms, medical documents, legal filings, or anything you don't want on someone else's server.
Choose Smallpdf if you need OCR, e-signatures, or advanced editing that requires server-side processing. Good for non-sensitive documents where convenience beats privacy.
Choose iLovePDF for similar use cases as Smallpdf — batch processing, format conversion (PDF ↔ Word), or when you need features that browser-side processing can't provide yet.
Frequently Asked Questions
Is LocalPDF really free?
Yes. All tools are free for personal use with no daily limits. No account required.
Why is browser-side processing slower?
Browser processing uses your device's CPU and RAM instead of powerful servers. For most PDFs (under 50 pages), the difference is negligible. Large books may be slower on phones.
Can LocalPDF handle scanned PDFs?
LocalPDF can compress and merge scanned PDFs. For OCR (extracting text from images), you'd need a server-side tool like Smallpdf or iLovePDF.
Is my data safe with Smallpdf/iLovePDF?
Both services encrypt files in transit and at rest, and delete them after processing. However, your files do leave your device and are temporarily stored on their servers. For sensitive documents, browser-side processing eliminates this risk entirely.