| Feature ID | Feature | Lovable | Replit | Vercel’s v0 | base44 | Cursor | Copilot | Claude |
|---|---|---|---|---|---|---|---|---|
| 1.1 | URL Input | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| 1.2 | PDF Upload (max 10MB, text-based) | Yes | Yes | Yes | Yes, allowed >10mb | Yes | Yes, allowed >10mb | Yes, allowed > 10mb |
| 1.3 | AI Summarization (gemini-2.5-flash) | Yes | Yes | No, there was an error | Yes | No | No (reader page not accessible) | Yes |
| 2.1 | Web Content Extraction | Yes, but also footer and header etc. was extracted. | Yes | Yes | Partially, some pages just did not load | Yes | No (reader page not accessible) | Yes |
| 2.2 | PDF Text Extraction | No, PDF reading did not work as it should, did not find text | No, failed for all tested PDFs | No, failed to extract content | Yes | No, failed for all tested PDFs | No (reader page not accessible) | No, failed for all tested PDFs |
| 3.1 | TTS Voice Selection (min 2 voices) | Yes | Yes | Yes | Yes, significantly less voices than others | Yes, voice selection did not work | No (reader page not accessible) | Yes, just 2 voices, but that’s the spec ;) |
| 3.2 | Playback Controls (Play/Pause/Resume/Stop) | Yes, only 1 word played | Yes | Yes | Sometimes played, sometimes not | Buttons available, but did not work | No (reader page not accessible) | Yes |
| 3.3 | Reading Speed (0.5x to 2.0x) | Yes | Yes | Yes | Yes | Yes | No (reader page not accessible) | Yes |
| 3.4 | Instant Playback | Yes | No | Yes | Sometimes yes, sometimes | Yes | No (reader page not accessible) | Yes |
| 4.1 | Real-Time Word Highlighting | Yes | Yes, after initial voice selection | Yes, but is not accurate | No | Yes | No (reader page not accessible) | Yes |
| 4.2 | Auto-Scrolling | Yes | Yes, after initial voice selection | Yes | No | Yes | No (reader page not accessible) | Yes |
| 5.1 | Landing Page (URL input + PDF upload) | Yes | Yes, inserted AI generated image | Yes | No | Yes | Yes, very limited | Yes |
| 5.2 | Minimal Reader Interface | Yes, but could be more minimalistic | Yes | Yes, but could be more minimalistic | Yes | Yes | No (reader page not accessible) | Yes |
| 5.3 | Progress Bar | No | Yes (X of XXX Words played) | Yes | Yes | Yes | No (reader page not accessible) | Yes |
| 5.4 | Responsive Design (desktop/tablet/mobile) | Partially, Controls were not fully visible | Yes | Yes | Yes | Yes | Yes | Yes |
| 5.5 | Authentication UI (Log In/Sign Up) | Yes | No, Error while calling the Firebase Login | Yes | Yes | Yes | Yes (same page with two buttons) | Yes |
| 6.1 | Guest Mode + Authenticated Accounts (Firebase) | Yes, used own Database | No, Firebase failure | No, failed to create account | No | No, failed to create account | No, failed to create accounts | No, failed to create accounts |
| 6.2 | Data Persistence (session-based for guests, Firestore for authenticated) | Yes, used own Database | No | No | No | No | No | No |
| 6.3 | Security (HTTPS) | Yes | Yes | Yes | Yes | - | - | - |
Created
October 29, 2025 08:42
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