Repair a broken PowerPoint file
Fixes the packaging errors behind “PowerPoint found a problem with content” and “needs to be repaired”, keeps every intact slide and tells you what it fixed. Free.
Three steps, done
Drop the broken file
A .pptx that won’t open, opens with a repair prompt, or shows blank slides. .pptm and .ppsx files work too.
Every part gets checked
The zip, the content types list, every link between parts, the slide list and the XML of each part. Whatever is broken is fixed or, when nothing can save it, removed.
Download the repaired .pptx
With a plain list of what was fixed, down to which slide lost which picture. If nothing needed fixing, you hear that too.
Your deck, with a voice
Narrated PowerPoint
Every slide voiced by an AI voice, timed to auto-advance. Download the .pptx and press play.
Narrate every slide of my PowerPoint with a natural voice and give me the narrated .pptxMP3 narration
The whole deck as one clean audio file, or one clip per slide.
Read my PowerPoint aloud and give me the MP3Deck from a brief
Describe the talk. Noty writes the slides, designs them and narrates them.
Make me a narrated presentation aboutYour own voice
Clone your voice once and every deck sounds like you presenting.
Narrate my deck in my cloned voiceVideo export
SoonThe narrated deck rendered as an MP4 for YouTube, LMS or email.
Tell Noty you want videoFrom a repair prompt to a deck that opens
Before
“PowerPoint found a problem with content”
A file that won’t open, or opens with missing slides after PowerPoint’s own repair, and no word on what went wrong.
After
A .pptx that opens, and a list of what was wrong
Every intact slide kept in order. Missing pictures replaced by blank placeholders so the layout holds. Each fix named.
Opens again? Give it a voice
Once the deck opens, tell Noty in the Studio chat what it should become: every slide narrated from its text or speaker notes, in a natural AI voice or your own, handed back as a PowerPoint that plays itself.
Why PowerPoint says the file is corrupt
A .pptx is a zip of hundreds of small parts: one per slide, layout, master, theme, picture and note, plus the lists that tie them together. PowerPoint refuses the whole file when one of those ties is broken, even if every slide is fine.
A broken zip after an interrupted download
Downloads, syncs and email attachments that stop early leave the zip without its table of contents at the end. The parts before the cut are usually intact and are recovered one by one; the part that was cut off mid-way is lost.
Missing content types
Every part has to be declared in a list called [Content_Types].xml. A slide that isn’t declared, or a declaration for a slide that no longer exists, is enough for PowerPoint to stop.
Dangling relationships
Slides point at their pictures, charts, audio and layouts through relationship files. When a target is missing, the link is removed, a missing picture becomes a blank placeholder and a missing chart or video is taken off the slide.
Deleted slides still listed
The presentation keeps its own list of slides. Tools that delete a slide file but not its entry, or give two slides the same id, produce a list PowerPoint can’t follow.
Bad XML from third-party exporters
Some exporters write stray byte-order marks, invisible control characters or a bare “&” into slide text. Those are cleaned out; a slide whose XML is truly unreadable is removed and named.
A .ppt renamed to .pptx
An older PowerPoint 97–2003 file with a .pptx name isn’t broken, just mislabeled. It is detected and you are told to rename it and save it as .pptx from PowerPoint.
Repairing a deck, three ways
PowerPoint’s own repair either works silently or gives up, and it can drop slides without saying which. Online repair tools vary in what they keep and rarely say what they changed.
| Notevibes | PowerPoint’s own repair | Online repair tools | |
|---|---|---|---|
| Explains what it fixed | Rarely | ||
| Keeps every intact slide | Sometimes | Sometimes | |
| Works when PowerPoint won’t open it | |||
| Narrate afterwards | |||
| Cloned voice | |||
| Video export | Soon | Export only |
Repair here for free and read exactly what changed. When it opens, Noty can narrate it.
When a file cannot be repaired
Repair works on structure: it can rebuild the lists that tie a deck together and recover every part that is still intact. It can’t bring back bytes that aren’t in the file. A download that stopped after a few kilobytes, or a file that is all blank bytes because a sync reserved the space and never filled it, has no slides left to recover.
Password-protected decks are encrypted. Without the password the contents are unreadable, to this tool and to every other one. Open the file in PowerPoint with the password, remove it under File → Info → Protect Presentation, and save.
A real .ppt file, the PowerPoint 97–2003 format, is a different kind of file altogether, not a damaged .pptx. The tool recognises it and says so. Rename it to end in .ppt, open it in PowerPoint, Keynote or Google Slides, and save it as .pptx.
When a file can’t be saved, look for another copy before rebuilding the deck: the version history of OneDrive, Google Drive or Dropbox, the original email attachment, or PowerPoint’s AutoRecover files (File → Info → Manage Presentation → Recover Unsaved Presentations). Any intact older copy is worth more than a heroic repair.
It opens. Now make it speak
Noty narrates every slide of the repaired deck in a natural voice or your own, and hands back a PowerPoint that plays itself.
Free to try · No credit card required
More PowerPoint tools
Frequently Asked Questions
What kind of damage can this fix?
Packaging damage, which is behind most “needs to be repaired” messages: a zip whose table of contents is broken or cut off, a missing or wrong content-types list, links to parts that don’t exist, deleted slides still in the slide list, duplicate slide ids, lost masters or themes, and XML with stray characters.
Will I lose any slides?
Only a slide whose own file is missing or whose content can’t be read at all. Every intact slide is kept, in its original order, and the list of fixes names any slide that was removed and why.
Can it fix a file that was cut off during download?
Partly. Every part stored before the cut is recovered and the deck is rebuilt around them. Parts after the cut are gone; a missing picture becomes a blank placeholder, and missing audio, video or charts are taken off their slide. Downloading the file again is still the better fix when you can.
My deck is password-protected. Can this help?
No. A password-protected deck is encrypted, and without the password nothing inside can be read. Open it in PowerPoint with the password, remove the password, save, and run it through again if it still misbehaves.
What about .ppt files?
A .ppt is the older PowerPoint 97–2003 format, not a broken .pptx, so there’s nothing here to repair. If a .ppt has been renamed to .pptx, the tool tells you. Open it in PowerPoint, Keynote or Google Slides and save it as .pptx.
What happens to .pptm and .ppsx files?
They come back as a regular .pptx. Macros are removed, since a .pptx can’t hold them, and a .ppsx opens for editing instead of straight into the slideshow. Your original file is untouched.
PowerPoint still says it needs repair. Now what?
The remaining problem is inside a slide’s content, such as a damaged chart or picture, rather than in the packaging. Let PowerPoint’s own repair run on the repaired file, which now has far less to fix, or open a new deck and bring slides in one by one with Home → New Slide → Reuse Slides to find the one that fails.