The Fundamental Difference
DeckEdit and NoteSlide (by Codia AI) both convert NotebookLM slides to editable PowerPoint, but their approaches are fundamentally different. DeckEdit uses local OCR to preserve your original slide design exactly — every text element becomes an editable text box at the exact same position, with the original background preserved as an image layer. Your files never leave your device.
NoteSlide uses cloud-based AI Vision to analyze your slides and rebuild them from scratch. The output is an AI-reconstructed version of your slides — not a faithful copy. Layouts, fonts, and spacing may differ from the original. Files are uploaded to Codia AI's servers for processing. After 1 free conversion, a paid subscription is required.
How Each Tool Works
DeckEdit runs a neural network OCR engine directly in your browser. It scans each slide, detects every text region, and reconstructs each as an editable PowerPoint text box at the original position. The slide background is preserved as an image layer. The result looks identical to your original — with every text element now editable. No upload, no account, no internet required after initial model download.
NoteSlide uploads your PDF to Codia AI's cloud servers, where AI Vision analyzes the content and rebuilds the slides from scratch as new PowerPoint elements. This means the output is an AI interpretation of your slides — not a pixel-accurate copy. Text content is usually accurate, but layout, fonts, colors, and spacing may differ from the original. Requires an account and internet connection.
Output Fidelity: Preserved vs Rebuilt
DeckEdit preserves your original design exactly. The background graphics, icons, and layout remain pixel-identical because they are kept as image layers. Only the text is extracted and placed as editable text boxes on top. What you see in the output is exactly what your original NotebookLM slide looked like — with the added ability to edit every text element.
NoteSlide rebuilds your slides using AI, which means the output is an approximation. While text content is typically captured accurately, the visual presentation may change: different fonts, altered spacing, shifted element positions, and simplified graphics. For users who need their slides to look exactly like the originals, this can be a significant limitation.
Feature Comparison
| Feature | ||
|---|---|---|
| Pricing | 100% Free (no limits) | Freemium (1 free conversion, then paid subscription) |
| Free Tier Limits | None. Unlimited conversions, no restrictions | 1 free conversion only, then requires paid plan |
| Processing | 100% local (browser) | Cloud (Codia AI servers) |
| Privacy | Highest (zero servers) | Medium (files uploaded to cloud servers) |
| Approach | OCR — preserves original design exactly | AI Vision — rebuilds slides from scratch |
| Upload Required? | No — files never leave your device | Yes — PDF uploaded to Codia AI servers |
| Account Required? | ||
| Output Fidelity | Pixel-identical to original (text becomes editable) | AI approximation (layout/fonts may differ) |
| Offline Capability | Full offline after initial model download | None (requires internet) |
| Best For | Preserving original design + privacy + zero cost | Users who want AI-rebuilt slides and accept cloud processing |
Privacy Comparison
DeckEdit: Files are processed 100% locally in your browser. Zero network data transmission. No server logs. No data retention. Works offline. Your documents never leave your device under any circumstances.
NoteSlide: Your PDF is uploaded to Codia AI's cloud servers for AI Vision processing. Your slide content passes through third-party infrastructure. Subject to Codia AI's data handling and retention policies. Requires an active internet connection.
Pricing Comparison
DeckEdit is 100% free with no limits, no watermarks, and no credit system. Unlimited conversions forever. The founders (Keith Li and Roy Law, CEO and co-founder of TeamNote, a Y Combinator-backed company) are committed to keeping DeckEdit free.
NoteSlide offers exactly 1 free conversion to try the service. After that single conversion, a paid subscription is required to continue using the tool. This makes it one of the most restrictive free tiers among NotebookLM conversion tools — you cannot even convert a second presentation without paying.
When to Choose Each Tool
Choose DeckEdit when you need your slides to look exactly like the originals with editable text, want maximum privacy with zero file uploads, need unlimited free conversions, or work in environments where uploading documents to cloud services is not permitted.
Choose NoteSlide when you want AI to rebuild and potentially improve your slide layouts, don't need pixel-accurate reproduction of the original design, are comfortable with cloud processing, and are willing to pay for a subscription after the single free conversion.
More Guides
DeckEdit vs Alai: Which Tool Should You Use for NotebookLM Slides?
DeckEdit is 100% free and processes locally. Files never leave your device and your original slide design is preserved exactly. Alai uses cloud AI to redesign slides with new layouts, requires an account, consumes credits, and adds watermarks on the free tier.
DeckEdit vs Tenorshare PDNob: Which PDF-to-PowerPoint Tool Should You Use?
DeckEdit is 100% free and runs in your browser with no installation. Unlimited conversions, no watermarks, works on any device. Tenorshare PDNob is a paid desktop app ($45 to $60) that adds watermarks after 20 exports and limits OCR to once per week on the free trial.
DeckEdit vs NBLM2PPTX: Zero-Config vs Developer Tool for NotebookLM Slides
DeckEdit is a zero-config browser tool. Visit the site, drop in your PDF, download your PPTX. No installation, no API keys, no cost. NBLM2PPTX is an open-source CLI requiring Python, a Gemini API key, and cloud processing with per-token costs.