Resize PowerPoint Slides
Change a deck to 4:3, 16:9, A4 or a custom size and scale the content to match
Drop a PowerPoint fileTap to choose a PowerPoint file
or click to browseor tap to choose
Change the slide size, in your browser
Large files (over 50 MB) may take longer or run out of browser memory
About Resize PowerPoint Slides
Changes the page size of a PowerPoint presentation (.pptx) to 16:9, 4:3, 16:10, A4, Letter or a size you type, and moves and scales everything on the slides to match: pictures, shapes, text boxes, tables, charts, and by default the text sizes and line widths too. Choose how the content fits when the shape of the page changes: fit inside, fill the page, or stretch.
Going from 16:9 to 4:3 (or back) changes the shape of the page, so something has to give: "Fit" keeps every proportion and leaves some space unused, "Fill" keeps proportions and lets content run past the edge, "Stretch" fills the page but squashes or widens pictures. Check the slides afterwards, since text that was tight may now wrap differently. The slide master and layouts are scaled too, but SmartArt diagrams, the insides of grouped shapes and some animations are not recalculated, and PowerPoint redraws charts and diagrams on its own. This works on the file's XML and has not been checked in desktop PowerPoint. Old .ppt files: open them in PowerPoint and save as .pptx first.
- What do Fit, Fill and Stretch mean?
- When the new page has a different shape, something has to give. Fit keeps every proportion and leaves some space unused. Fill keeps proportions and lets content run past the edge. Stretch fills the page and squashes or widens pictures and shapes.
- Is the text scaled too?
- By default yes: font sizes, line widths, indents and spacing are scaled with the shapes. Turn that off to keep every font size as it is.
- What is not recalculated?
- SmartArt layouts, the insides of grouped shapes and some animations. Charts and diagrams are resized as frames. The result lists how many it found.
- Has this been checked in PowerPoint?
- The result opens in LibreOffice and python-pptx in our tests, but it has not been checked in desktop PowerPoint, so look through the slides afterwards.
How to use Resize PowerPoint Slides
Drop your .pptx and choose a new size or type a custom one in inches, centimetres, millimetres or pixels. Choose how the content fits and whether text sizes scale. The preview shows your original beside the resized deck, and the page lists any shapes that now sit outside the slide.
When to use it
Useful when a deck made for a widescreen projector must be printed on A4 or Letter, when an old 4:3 deck has to become 16:9, or when a template and a deck have different sizes.
When not to use it
If a deck has heavy SmartArt or many grouped drawings, resize in PowerPoint where they can be redrawn. If you only want to print, use the print settings instead of changing the deck.
Tips for best results
Use Fit when nothing may be cut off. Compare the first and the busiest slide in the preview. When you go from 16:9 to 4:3, expect more empty space at the top and bottom.
Limitations
Sizes from 1 to 56 inches. The insides of grouped shapes, SmartArt layouts and some animations are not recalculated. Text that no longer fits its box is not re-fitted. Changing the page shape always trades something: check the preview. The result has not been checked in desktop PowerPoint.
Privacy
The deck is rewritten inside your browser tab and is not uploaded. A request that counts the use goes to this site when you download and carries no part of your file.
Next: PowerPoint Accessibility Checker
Find missing alt text, titles and tiny text, and type the fixes
Related PowerPoint tools: