SlideShrink shows you exactly what's bloating your PowerPoint, Word and Excel files, then compresses them. No black box: you see every file, every estimate, before anything is touched.
Other tools give you a smaller file and no explanation. SlideShrink starts with a full report (what's big, where it's used, and what each fix will save) and lets you pick.
A per-file breakdown before anything changes: sizes, dimensions, bitrates, and which slide, page or sheet uses each file.
Screen recordings stored at 14+ Mbps get re-encoded with ffmpeg at a quality you choose, with GPU (NVENC) acceleration when available.
When you trim a video in PowerPoint, the full original stays in the file. SlideShrink cuts the hidden footage for real, and only when every usage agrees, so playback never breaks.
4000-pixel photos on a 1080p screen are wasted bytes. Images are resized to a sensible cap and recompressed; EXIF orientation is preserved and animated GIFs are left untouched.
The same image pasted on twenty slides is sometimes stored twenty times. Byte-identical duplicates are removed with zero quality loss.
The same engine works on .pptx, .docx and .xlsx: bloated image-heavy reports and workbooks shrink just like decks.
Office files are ZIP archives full of XML and media. SlideShrink reads them directly, no Office installation needed.
Drop in a file. SlideShrink maps every embedded video and image to where it's used, probes codecs and dimensions, finds duplicates and hidden trimmed footage, and estimates the savings.
Untick anything you want left alone, override quality per file, or set a target size (say a 25 MB email limit) and let SlideShrink pick the settings. The estimate updates as you go.
A new file is written next to the original, which is never modified. Open both, compare, keep whichever you want.
The existing options make you choose between knowing what's wrong and fixing it. SlideShrink does both, for free.
| SlideShrink | PowerPoint built-in | NXPowerLite | Slidewise | |
|---|---|---|---|---|
| Per-file analysis report | ✓ | ✗ | ✗ | ✓ |
| Compresses videos & images | ✓ | ✓ | ✓ | ✗ |
| Cuts hidden trimmed footage | ✓ | ✗ | ✗ | ✗ |
| Removes duplicate media | ✓ | ✗ | ✓ | ✗ |
| Word & Excel support | ✓ | ✗ | ✓ | ✗ |
| Free web analyzer | ✓ | ✗ | ✗ | ✗ |
| Price | Free (beta) | with Office | ~$57 | $79/year |
The free web analyzer gives you the full size breakdown (duplicates, hidden trims, oversized media and a savings estimate) entirely client-side. Safe for confidential files.
Open the web analyzerYes. SlideShrink never modifies the input: it writes a new file next to it. Repacking is covered by an automated integrity test suite that verifies every internal reference in the output still resolves.
Defaults are chosen for screen sharing: videos at CRF 28 and images capped at 1920 px look essentially identical in a presentation. If you're projecting on a 4K wall, raise the quality; every setting is adjustable, per file if needed. And deduplication is completely lossless.
Yes. Set a target size (25 MB, say) and SlideShrink picks the least aggressive settings whose estimate fits, per-file overrides included. If even the strongest settings can't reach the target, it says so up front instead of quietly failing.
Nothing extra. The Windows installer bundles everything, including the ffmpeg encoder. The web analyzer needs nothing at all: it runs in any modern browser.
No. It's a static page: unzipping, parsing and estimating all happen in your browser. The page makes no network requests with your data, which you can verify in your browser's developer tools; the analyzer code ships readable and unminified.
Packaged builds are Windows-first for now; Mac and Linux versions are planned. The web analyzer works everywhere today.
SlideShrink is free while in beta. Grab the installer, drop in your biggest deck, and see the difference. Your original file is never touched.
Request the beta installerMicrosoft Store listing coming soon. Prefer zero installs? The web analyzer is free forever.