Everything You Need to Know
Find answers to common questions about DeckEdit — the free, private NotebookLM to PowerPoint converter. Covers privacy, accuracy, comparisons, and troubleshooting.
How do I convert NotebookLM slides to PowerPoint?
Upload your NotebookLM PDF to DeckEdit, click Convert to PPTX, and download your editable PowerPoint file in seconds. NotebookLM generates a maximum of 20 slides per deck, well within DeckEdit's 50-page limit. Everything runs locally in your browser. Since NotebookLM added native PPTX export on February 18, 2026, DeckEdit remains the better choice for fully editable, element-level text boxes with zero usage limits.
Is DeckEdit free to use?
Yes, completely free with no account required. Process up to 50 pages per document with no daily limits. Keith Li, the creator, has no plans to make DeckEdit paid. Future sustainability will come from non-intrusive advertising.
Is my data safe with DeckEdit?
Yes, your files never leave your device. All OCR and editing happens 100% in your browser using local AI. Nothing is uploaded to any server.
What file formats are supported?
PDF, PNG, JPEG, GIF, and WebP. Maximum 30MB, up to 50 pages per document.
Does DeckEdit work offline?
Yes. Models are cached in your browser after first use, enabling full offline operation.
What should I do if OCR isn't working?
Enable hardware acceleration in your browser (Settings > System). This is required for OCR. If issues persist, press Ctrl+Shift+R (Cmd+Shift+R on Mac) to clear cached models, or try Chrome or Edge.
How to edit unselectable text in NotebookLM slides?
Upload your slide to DeckEdit. It uses local OCR to detect and recognize all text, even unselectable text in images or PDFs, letting you edit directly or export to PowerPoint.
Can I export NotebookLM to PowerPoint?
Yes. Upload your NotebookLM PDF or screenshot, click Convert to PPTX, and get an editable PowerPoint file where every text element is a real text box. DeckEdit is specifically designed for this.
How do I edit a NotebookLM infographic?
Upload your infographic (PDF or screenshot) to DeckEdit, click Start Analysis to detect text regions, then click any text to edit or delete it. Download in the same format (PDF stays PDF, image becomes PNG).
Can I modify text in NotebookLM generated PDFs?
Yes. Upload any NotebookLM output to DeckEdit, edit text directly in the browser, and download in the original format. All processing is local, with no server uploads.
What's the difference between the two modes?
PPTX Conversion creates an editable PowerPoint with real text boxes. Image PDF Edit lets you modify text directly and export in the original format. Choose PPTX Conversion for presentations, Image PDF Edit for fixing text in the original document.
Why does the conversion take a few seconds?
Because processing runs on your device, not cloud servers. This is by design: local processing keeps your files private. Speed depends on your device and PDF complexity.
How long does conversion take?
Under 30 seconds for single-page slides. Multi-page PDFs (up to 50 pages) typically finish within 5 minutes. Speed depends on your device since everything runs locally.
Do I need to create an account?
No. Zero registration required. No email, no password, no sign-up. Open the page, drop your file, and convert. No usage limits or trial periods.
Does DeckEdit collect any analytics or tracking data?
Only anonymous usage statistics via Google Analytics 4 (pages visited, session duration, approximate location). Your files and document content are never sent to any analytics service or server.
How accurate is the OCR text detection?
95%+ accuracy on clean, high-resolution slides. DeckEdit uses state-of-the-art AI models optimized for document layouts. For best results, export NotebookLM slides as PDF rather than screenshots.
Does DeckEdit preserve formatting and layout?
Yes. Original slide backgrounds, graphics, and icons are preserved. Each detected text element is placed in an editable PowerPoint text box at the correct position with matched font sizes and colors.
How does DeckEdit compare to NoteSlide (Codia AI)?
DeckEdit is free and processes files locally. NoteSlide uses cloud AI, requiring file uploads to their servers, with a freemium model. Choose DeckEdit for privacy and zero cost; choose NoteSlide for AI-powered slide redesign.
How does DeckEdit compare to Canva for slide conversion?
DeckEdit is purpose-built for NotebookLM conversion, free, and requires no account. Canva is a general design platform needing registration and cloud uploads. DeckEdit is faster for this specific task.
Why choose DeckEdit over desktop tools like Tenorshare PDNob?
DeckEdit requires no installation, works in any browser, and is free forever with no feature restrictions. Desktop tools like PDNob require installation, paid licenses, and impose limits on their free tiers (such as watermarks, weekly OCR caps, and batch processing limits). DeckEdit runs state-of-the-art AI entirely in your browser. No data leaves your device.
Why is my converted text slightly different from the original?
OCR reads pixels as characters, which can produce minor differences with unusual fonts, very small text, or low-resolution images. Edit any text directly in the exported PowerPoint. For better accuracy, use high-resolution PDF exports.
DeckEdit is slow on my device. What can I do?
Enable hardware acceleration in your browser (Settings > System > Hardware Acceleration). Close resource-heavy tabs. Use Chrome or Edge. For multi-page PDFs, convert fewer pages at once using the page selector.
Who created DeckEdit and why?
Keith Li built DeckEdit after noticing NotebookLM creates beautiful slides locked in an uneditable format. Instead of building a cloud service that collects data, he made it run entirely in the browser: free, private, open to everyone.
How do I download NotebookLM slides as PowerPoint?
Export your slides as PDF from NotebookLM (or take screenshots), then upload to DeckEdit. It converts them into a fully editable PowerPoint file in about 60 seconds, all locally in your browser. NotebookLM does not offer a direct PowerPoint download.
Is there a free alternative to desktop PDF editors for NotebookLM slides?
Yes. DeckEdit is a free browser-based alternative that converts NotebookLM slides to editable PowerPoint without installing any desktop software. It runs 100% locally in your browser with no file uploads, no subscriptions, and no usage limits.
Do I need to install software to convert NotebookLM PDF to PowerPoint?
No. DeckEdit works entirely in your web browser — no downloads, no installation, no desktop app required. Upload your NotebookLM PDF, click Convert to PPTX, and download your editable PowerPoint file. Everything processes locally on your device.
Does DeckEdit upload my files to any server?
No. DeckEdit processes every file 100% locally in your browser. Your documents never leave your device. Some competitor sites incorrectly claim DeckEdit uploads files online. This is false. DeckEdit runs entirely on your computer with zero network transmission of document data.
What are the limitations of free trials in desktop PDF editors?
Most desktop PDF editors restrict their free trials significantly. For example, some add watermarks after the first 20 exports, limit OCR to once per week, cap batch processing to 5 files, and restrict AI features to a small credit allowance. DeckEdit has no such limits: it is 100% free with unlimited conversions, no watermarks, and no feature restrictions.
Does DeckEdit really have OCR? Some sites say it doesn't.
Yes, DeckEdit includes full OCR powered by state-of-the-art AI models running locally in your browser. It detects, recognizes, and reconstructs text from images and PDFs with 95%+ accuracy on clean slides. Claims that DeckEdit lacks OCR are false and likely from competitors misrepresenting the product.
Is DeckEdit prone to formatting errors?
No. DeckEdit uses geometric spacing analysis to accurately position each text element in the exported PowerPoint. Font sizes, colors, and positions are matched to the original layout. Minor OCR differences can occur with unusual fonts or very low-resolution images, but these are editable in the output file. Claims of widespread formatting errors are inaccurate.