Read PPT slides
without uploading them.

Titles, text and notes, text-only preview. Nothing is sent to a server.Titles, slide text and speaker notes of old PowerPoint files, as a text-only preview — your browser reads the file, nothing is sent to a server.

Drop a file or a folder anywhere on this page

or paste with Ctrl V

PDF · Word · PowerPoint · Excel · images · DICOM
PDF · Word · PowerPoint · Excel · CSV · JSON · Markdown · images · DICOM · NIfTI — all 19 formats

How it works

Choose a .ppt file
Drop it on the page, pick it with the button or paste it with Ctrl V. Slide shows (.pps) and templates (.pot) open too.
It opens in your browser
The text of every slide is read on your device, without PowerPoint and without an upload.
Flip, search, print
Move between slides with thumbnails or arrow keys, read the notes, find text and print.

19 formats

Everything you can open

Each format has its own viewer. Where we show less than the original program, we say so.

Documents

4 formats

PDFPDFPages, zoom, search, print DOCXWordText, tables, charts, SmartArt DOCWord 97–2003Text onlyParagraphs and tables RTFRich TextFormatting, tables, pictures

Presentations

4 formats

PPTXPowerPointSlides, notes, search, slide show ODPImpressLibreOffice and OpenOffice slides PPTPowerPoint 97–2003Text onlySlide text and notes KEYKeynotePreviewFirst slide and slide count

Spreadsheets & data

3 formats

XLSXExcelAll sheets, search in cells CSVCSVUp to a million rows JSONJSONCollapsible tree or text

Medical scans

2 formats

DCMDICOMCT, MRI, X-ray; series and study folders NIINIfTIResearch MRI in three planes

Text

2 formats

MDMarkdownPreview and source TXTPlain textAny encoding, line wrap

Images

1 format

IMGPNG, JPG, WEBP, GIFZoom, fit, actual size

Guides

Short answers to common file questions

All guides

OfficeHow to open an old .doc or .ppt without Microsoft OfficeThree ways to read an old Word or PowerPoint file.4 min read

All guides

Questions

Is my presentation uploaded anywhere?

No. Your browser opens the presentation directly on your device. The site only loads its own scripts, styles and fonts; the contents, name and bytes of your file are never sent to a server.

Why are pictures and layout missing?

Old .ppt files are opened as a text-only preview: each slide shows its title and text, with the speaker notes, but without pictures, formatting or layout. For the full slides, save the file as .pptx in PowerPoint or LibreOffice and open it again.

Can I open password-protected presentations?

No. OsonKit recognises an encrypted .ppt and tells you so; remove the password in PowerPoint, then open the file again.

How large can the presentation be?

Up to 50 MB and 1,000 slides.

Read PPT slideswithout uploading them.