Change Slide Size
Change PowerPoint slide dimensions
Last updated: April 30, 2026
Upload an image
Drag & drop or browse
Settings
Selected Preset
Widescreen (16:9)
33.87 × 19.05 cm
12,192,000 × 6,858,000 EMUs
The tool modifies the <p:sldSz> tag inside your PPTX file. Only the canvas size changes — your content layout may need manual adjustment after resizing.
Change Slide Size
Adjust your presentation for any screen or print format. Easily switch between Standard (4:3), Widescreen (16:9), or custom dimensions for specialized displays. Our tool offers two content strategies: Scale to Fit grows or shrinks every element proportionally so nothing is cut off, while Ensure Fit keeps your current font sizes and reflows shapes to the new canvas. Images, text boxes, charts, and tables are repositioned against the new slide boundaries, and the slide master is updated so new slides inherit the correct dimensions. Animations, transitions, and embedded media stay attached to their slides. For dramatic aspect ratio changes, some overlap is unavoidable, so the preview lets you inspect each slide before committing. Everything is processed locally in your browser without uploading your deck.
Why This Tool Exists
What makes this useful — and why I built it this way.
Universal Display: Ensure your slides look perfect on any projector or monitor.
Print Ready: Scale your slides to standard A4 or Letter sizes for handouts.
Time Saving: Avoid manually resizing elements on every slide.
Secure Local Processing: No data ever leaves your browser.
Master Consistency: The slide master is resized too, so newly added slides match.
When You'd Use This
Real situations where this tool saves the day.
Monitor formatting: Convert widescreen 16:9 slides to classic 4:3 layouts.
Print formatting: Adjust slides to standard A4 or Letter sizes for handouts.
Custom screens: Format presentations for unique display banner ratios.
Video exports: Fit slides to 16:9 before recording a walkthrough for YouTube.
Kiosk displays: Resize decks to the exact pixel dimensions of a lobby screen.
Using Change Slide Size
It's straightforward — here's how it works.
Select your PPTX file.
Choose a preset size or enter custom dimensions.
Select 'Scale to Fit' or 'Ensure Fit' for your content.
Click 'Change Size' to regenerate the presentation.
Download the resized PPTX file.
Questions People Ask
Honest answers about how this works.
Does it work with legacy .ppt files?
For best results, we recommend converting legacy .ppt files to the modern .pptx format first using our conversion tools.
Will resizing cut off text or images?
With Scale to Fit, every element is resized proportionally, so nothing falls off the canvas, though text becomes smaller on a reduced slide. For large aspect ratio changes, use the per-slide preview to catch any overlap before downloading, then adjust individual shapes if needed.
Is my deck uploaded to change its size?
No. The presentation is opened, resized, and saved back to a download entirely within your browser. Client decks and internal strategy slides are processed in local memory and never sent to a server or retained after the page is closed.
Does the slide master get resized too?
Yes. Along with the individual slides, the tool updates the slide master dimensions so placeholders and layouts stay aligned, and any slide you add later in PowerPoint uses the new size automatically instead of reverting to the old dimensions by default.
Discover More Tools
Hand-picked utilities to speed up your workflow.