Product
Send a PDF or PPTX when the recipient wants a file.
PDF renders pixel accurate through headless Chromium with the watermark intact. PPTX converts through structured generation with the conversion limits called out on the download. Both carry the share fingerprint in document metadata.
In the product
A link for most. A file for the rest.
Download from the viewer
Two formats, one share, the trail intact.
The recipient picks PDF or PPTX from the viewer. PDF renders pixel-accurate through headless Chromium with the visible watermark intact; PPTX converts through structured generation with the limits stated up front. Both carry the share's fingerprint in document metadata, so a leaked file still decodes back to the share.
How the fingerprint survivesDownload as
High-fidelity print. Renders exactly what you see.
PowerPoint (.pptx)
Editable. Best-effort conversion — formatting may differ.
Pixel accurate. Watermark intact. Fingerprint in the metadata.
Codexroom renders PDFs through headless Chromium. The same HTML the viewer renders is the HTML the PDF embeds. The visible watermark stays in, custom fonts embed cleanly, and charts render the way the slide template authored them. The share token's fingerprint goes into the PDF metadata, so a leaked PDF still decodes back to the share.
Generated PDFs cache against a hash of the deck, the share, and the watermark configuration — the second request for the same export returns the cached file. Cap of 100 slides per deck; rate limit of 10 exports per share per hour.
PPTX
Structured generation. Limits stated up front.
PPTX is an editing format and HTML-to-PPTX conversion is always lossy. Codexroom handles the loss honestly. Each slide template carries a structured description of its content (title, body, image, chart, list); the exporter walks that description and builds a corresponding PowerPoint slide through pptxgenjs. Brand tokens for colours and fonts apply where PowerPoint supports them.
The download button shows the conversion limits before the recipient commits: backgrounds and gradients may shift, multi-column layouts approximate, chart styling switches to PowerPoint defaults, animations drop. The fingerprint writes into the document's custom XML properties so the share still decodes from the PPTX. Most modern audiences read in the browser; the file goes to the lawyer on the flight and the procurement team that edits a header before the upload.
See it work