"Which free online PDF tool is the best?" is one of the questions we get asked the most. In this article we put WebToolsHUB head-to-head with iLovePDF, PDF24 and Smallpdf, and give an objective verdict across five dimensions: PDF to image, upload limits, free allowances, privacy and batch capabilities.
1. Overall Comparison Table
| Feature | WebToolsHUB | iLovePDF | PDF24 | Smallpdf |
|---|---|---|---|---|
| PDF to image | Per-page export to PNG/JPG | Supported | Supported | Supported |
| Free allowance | Unlimited, no daily cap | Limited | Generous free tier | 2/day (with waiting) |
| Upload method | Local processing, zero upload | Must upload to server | Local or cloud | Must upload to server |
| File size limit | Only limited by browser memory; usually no hard cap | Limited on free plan | Limited on free plan | Up to 5MB on free plan |
| Batch processing | Batch export per page | Rich | Rich | Partly free |
| Full features (merge/split, etc.) | Focused on PDF to image | Complete | Complete | Complete (partly paid) |
| Registration required | No | Optional | Optional | Waiting required on free plan |
| Privacy | Files never uploaded | Depends on provider policy | Local mode available | Retained per policy after upload |
2. Recommendations by Use Case
Use case A: you only need to convert PDF pages to images
Go straight to the WebToolsHUB PDF to Image tool. Zero upload, per-page PNG/JPG export and no usage limits make it the fastest and safest option.
Use case B: you need PDF merge, split, compress or signing
Choose PDF24 (local mode protects your privacy) or iLovePDF (the most complete feature set). Smallpdf's free allowance is tight, so it's best for the occasional emergency.
Use case C: you are handling confidential documents
Prioritize tools that process files locally: WebToolsHUB for image conversion and the PDF24 desktop app's local mode. Any cloud service that requires uploads carries data-retention risk.
3. How to Read the Table
Legend: ✓ Advantage, △ Comparable, ✗ Weakness. Free allowances and size limits are based on publicly available information on each product's page and may change over time.
Frequently Asked Questions (FAQ)
Is WebToolsHUB's PDF to image conversion really free?
Yes — unlimited conversions with no daily cap, and no registration is required.
Are my PDF files uploaded to a server?
No. All processing happens locally in your browser, so your files never leave your device.
Which tool should I use for sensitive documents?
Choose a local-processing option such as WebToolsHUB or PDF24's local mode, and avoid cloud uploads for confidential files.
References
- iLovePDF: https://www.ilovepdf.com/
- PDF24 Tools: https://tools.pdf24.org/
- Smallpdf: https://smallpdf.com/
- PDF.js (Mozilla): https://mozilla.github.io/pdf.js/