Paperly vs iLovePDF: Upload vs In-Browser
Updated: September 2026
Both Paperly and iLovePDF are popular PDF tool suites. The real difference is architectural: iLovePDF processes files on its servers after upload, while Paperly processes them in your browser. This page compares both fairly — each approach has genuine trade-offs — so you can choose per task.
Where your files go
| Aspect | iLovePDF | Paperly |
|---|---|---|
| Processing location | Company servers (upload required) | Your browser (no upload) |
| Works offline | No | Yes, after first visit (PWA) |
| File-size ceiling | Set by the plan (free tier limited) | Browser memory (about 100 MB per file here) |
| Cost | Free tier + paid plans | Free, ad-supported later |
| Batch tools | Yes, on paid tiers | Yes, free |
Server-side processing is not automatically bad: it lets iLovePDF run heavier conversions (for example high-fidelity Office rendering) on powerful machines. In-browser processing means your document bytes never travel over the network — there is no upload step to complete, wait on, or trust.
When each one is the better choice
- Choose Paperly for private or sensitive documents (contracts, IDs, medical or financial statements) where the file simply should not leave your device.
- Choose Paperly for very repetitive tasks where you do not want upload queues: merge, split, rotate, page deletion, watermarking and JPEG/PNG conversion are instant locally.
- Choose iLovePDF when you need its specific server-side pipelines on a non-sensitive document and are happy with its account and quota model.
- For redaction, in-browser processing matters most: verify what a tool claims before trusting it with document redaction (see our Redact PDF and Redaction Verification tools).
How to verify these claims yourself
Open your browser DevTools → Network tab on either site and process a file. On Paperly you will see no request carrying your document — processing runs locally (you can even disconnect from the internet after load). That is a test you can repeat on any tool that claims local processing.