Compare PowerPoint Files
Compare two PowerPoint (.pptx) decks online. See slides visually diffed or compare extracted text, with added and removed slides flagged. Free, with no upload.
Files never leave your browser.
About PowerPoint Diff
Compares two .pptx decks slide by slide. Rendered slides draws each slide as an image and marks pixel-level changes; Slide text extracts the text and runs a structural diff.
How to use
- Pick the left .pptx file.
- Pick the right .pptx file.
- Set Compare as to Rendered slides or Slide text under Options.
What this tool doesn't handle
- Embedded videos and audio are not analyzed.
- Animations are not played; comparison is at the static state.
Frequently asked questions
Do my files ever leave my browser?
No. Every comparison runs locally in your browser. Nothing you paste, drop, or load is uploaded to a server; the tool keeps working even if you go offline after the page loads.
Is this tool free to use?
Yes. All DiffResolver tools are free, with no account, sign-up, or installation. Because processing happens on your device, there are no server-imposed usage limits.
Can I see exactly what changed between two slide decks?
Yes. Rendered slides draws each slide and highlights pixel differences; Slide text extracts the slide text and diffs it structurally. Slides present on only one side are flagged.
Are animations and embedded media compared?
No. Slides are compared in their static state, and embedded video or audio content is not analyzed.
Is there a file size limit?
No server limit applies, because nothing is uploaded. The memory of your device sets the practical limit. Above 10 MB for text, 40 MB for images, 100 MB for documents, or 500 MB for archives, the tool warns you that the work can be slow, but it never blocks the file.
Does this tool work offline?
Yes. The browser keeps a copy of the tool after the first visit, so a page you opened before still works without a network. You can also install DiffResolver as an app from the browser menu. Installation stays optional; the site works the same in a normal tab.
Where is my data stored?
Your files are stored nowhere. They stay in the memory of the page and are gone when you close the tab. Only what you save yourself stays in this browser: a snapshot, your tool options, and your theme. To remove it, open Settings and select Clear all local data.