Import
Select a PPTX, PDF, or HTML lecture. Parsing and media extraction happen locally in the browser.
01 Import · Reorganize · Download
Make every lecture
worth reading.
Upload a PPTX, PDF, or HTML lecture. Jang extracts its academic content and useful visuals locally, optionally asks Gemini to reorganize it, then creates a polished HTML preview and downloadable PowerPoint.
Browser-first extraction
No account required
Downloadable PPTX + HTML
Workspace
Rebuild a lecture
The original file stays on your device. Only extracted text and an asset manifest are sent for AI restructuring when Gemini is configured.
1
Choose the sourceOne .pptx, .pdf, .html, or .htm file
FILE
2
Set the detailsOptional metadata for the cover
Verification protects the free Gemini quota from automated abuse.
Checking the Cloudflare AI configuration…
Your redesigned lecture appears here
Jang will show the generated pages in a safe preview before you download them.
Reading the lecturePreparing content for extraction…
- Read sourceValidate and parse PPTX, PDF, or HTML
- Extract contentText, tables, images and diagrams
- Reorganize with GeminiCreate a faithful academic structure
- Build outputsCreate the HTML preview and PowerPoint
The pipeline
Four clear steps. One clean file.
Extract
Readable text, slide structure, embedded images, SVG, and relevant PDF page snapshots are identified.
Rebuild
Gemini creates a content plan when configured; otherwise Jang creates a source-preserving local layout.
Download
A PowerPoint deck and a self-contained HTML lecture are generated in the browser.