PDF24 offers a large number of free PDF tools on its website, plus a Windows desktop app that works offline. Its online tools process files on their servers.
Toolkoa sits in between: there's nothing to install, yet the document isn't uploaded either, because everything is processed inside the browser. No account and no watermark.
Real limits: PDF24 has many more PDF tools than Toolkoa (for example OCR and Office conversions). If you already use its desktop app, your files don't leave your computer either; Toolkoa fits better when you can't or don't want to install software.
| Feature | Toolkoa | PDF24 |
|---|---|---|
| Where files are processed (web) | In your browser, never uploaded | On their servers |
| Needs installing | No | No (web) / Yes (desktop app) |
| Account required | No | Check their website |
| OCR and Office conversion | No | Yes |
| Works on mobile and Mac without installing | Yes | Web version |
No. Toolkoa runs in the browser and processes PDFs on your device without sending them.
Usually yes, since it needs no installation. Still check your company's policy.
No. There's no server receiving them; when you close the tab they're gone from memory.