FAQ
Not listed here? Email support@slimppt.com. We usually reply within 1-2 business days. For bugs, include browser version, steps to reproduce, and an optional redacted sample file.
Product & install
Do I need to install SlimPPT?
No. Use a modern browser on the website or open the editor directly. No plugin or desktop app. Open, edit, and present without an account.
Does it work on phones?
Phones and tablets can open the site, but heavy editing (timeline, multi-select) is best on desktop or a tablet with a keyboard. Slideshow and share links usually work on phones.
Can I work offline?
You need a network for the first load. After parsing, editing often works on slow links. Saving .pptx and HTML export need sign-in and a network. PDF, PNG zip, and video are made in the browser. Do not rely on fully offline mode for critical work.
Can I switch the UI to Chinese?
Yes. Console Settings or the editor locale switch: English / Simplified Chinese. This docs site has a language menu in the header.
Files & formats
Which formats are supported?
Import is primarily .pptx / .pptm. Export: PPT, PDF, HTML, PNG as shown in the editor. Convert legacy .ppt to pptx first. Macros in .pptm pass through and are not executed in the browser.
Is there a file size limit?
We recommend under ~100 MB per file. Larger decks may exhaust browser memory. Split files or close other tabs. Online storage has a separate per-file cap (~200 MB in beta). Opening from an https link stops at 100 MB.
Can I open a deck from a web link?
Yes. In the editor, choose Open from link, or open the editor with ?pptx= set to the encoded https address. A public or time-limited link on S3, OSS, or any other host works the same way. The file is read in this browser and opened as a local draft. See Getting started.
Can I keep editing in PowerPoint?
Yes. The export is a .pptx, and PowerPoint can open it. Check complex layouts and uncommon effects in PowerPoint.
WPS / Keynote / LibreOffice?
Save as standard .pptx first. Layout and animation follow the PowerPoint file. Complex effects can differ.
Animations & compatibility
Do animations match PowerPoint?
Transitions and common object animations play from the original file. Custom paths, plugins, VBA, and uncommon effects can differ. Preview in the editor before you export.
One slide looks wrong. Why?
Preview in-app first. Note slide number and effect name, then email support with a redacted sample if needed.
Embedded video and audio?
Depends on encoding and browser codecs. Preview media slides before export; finalize critical decks in PowerPoint.
Laser pointer and whiteboard?
During a show: L laser, W whiteboard, S save the current slide as PNG. Right-click for the menu. See Shortcuts.
Accounts, quotas & beta
Do I need to register?
No. You can open, edit, and present without an account; drafts stay in the browser. Saving .pptx and HTML export need sign-in. PDF, PNG zip, and video do not. Online storage, sharing, live present, and collaboration need sign-in. Sign-up joins the beta. Questions: support@slimppt.com.
What can I do in beta?
Beta includes full editing, slideshow, local storage, and AI with your own API key. Export is 500 pages/month, with no HTML watermark; HTML export keeps advanced motion and plugins. Online storage is 1 GB (~200 MB per file). Online share is up to 50 links, not counted as export; password is available. Live present is included. Live numbers in the console and editor always win.
How are export pages counted?
Each exported slide counts as one page. Downloads of PPT / HTML (including Ctrl/Cmd+S save as .pptx) count toward the monthly quota; PDF / PNG zip and saving the show as a video are free on-device exports. Online share, presentation, local autosave (browser drafts), and cloud upload do not count. Quotas reset each month on the anniversary of when beta access started. Unused pages do not roll over. Rely on the editor and account pages for the live balance.
Local vs online storage?
Local storage uses IndexedDB and does not count toward export quota (browser-limited). Guest drafts live in a visitor store and merge into your account after sign-in. Online storage is optional encrypted backup (cross-device sync) and needs sign-in. Deleting frees space immediately. See Cloud storage & share.
Share vs export?
Export means downloading files locally. Saving .pptx and HTML count toward export pages; PDF / PNG zip and saving the show as a video are free on-device. Online share hosts read-only presentation links. Link count capped by plan, not counted as export. Password (Lite / Pro / beta) and unpublish are available. For co-editing, use collaboration (experimental) or send .pptx.
Can beta use advanced motion and plugins?
Yes. In-product slideshow and HTML export keep advanced transitions and pack playback plugins.
I forgot the cloud passphrase
The passphrase is client-side only; we cannot decrypt for you. Delete the unreadable cloud copies in My files (and the media library if needed), or start from a local draft / re-exported file. The next upload will let you set a new passphrase. Changing the passphrase in the editor also re-encrypts existing files. Only if you still know the old one.
New device cannot open cloud files
Enter the same passphrase you set on the first device. Do not create a new one. The prompt says “enter”, not “set”, when this account already has encrypted data. See Cloud storage & share.
AI
Does SlimPPT charge for AI?
No. Your model vendor bills the key. Generate and chat need a configured key.
Skills / MCP?
Skills are prompt rule sets you can author. MCP exposes tools (stock photos, fonts, …). Toggle them under AI → Capabilities; custom Skills live in the console. See AI assistant.
Live present & collaboration
Viewers cannot join live present
Check the password, lock, and “block entry at start”. Audio is peer-to-peer WebRTC; some corporate NATs fail. Cap is 24 people. It is not a large webinar.
Collaboration vs share?
Share / live present is read-only. Collaboration (experimental) is multiplayer editing, needs the full invite link (including the key), and requires sign-in. Do not use the room as the only backup.
Security & privacy
Is my deck uploaded to your servers?
Core editing is local, and drafts stay on-device. Opening a file from the marketing site prefers a browser-to-editor handoff; if the popup is blocked and you are signed in, a short-lived server slot may be used. Opening from an https link is read in this browser as well. Saving .pptx or exporting HTML sends the deck content needed to generate the file to our servers. Used only for that generation, not retained long term. PDF / PNG zip and saving the show as a video stay in the browser. After import, drafts stay in the browser by default. Online storage encrypts in the browser with your passphrase before upload; share uploads a read-only copy only after a clear prompt.
Who receives AI prompts?
The model vendor you configure with your API key. SlimPPT does not host or store your key.
How do I clear local data?
Clear site data for https://slimppt.com and https://edit.slimppt.com in the browser. Delete cloud files in the console, or email support@slimppt.com.
Sign out other devices?
Console Profile → Sessions: revoke one session or all others.
Legal pages: Terms and Privacy.
Issues & support
Blank page or load failure?
Refresh, clear site data, try another browser, or disable ad blockers.
Tab freezes or crashes?
Close other tabs, reduce deck size, update the browser. Contact us with OS, browser version, and file scale if it persists.
Export failed?
Check sign-in, quota, protected content, and disk space.
Drafts gone after login?
Guest drafts merge in the same browser. A different browser, device, or cleared site data cannot carry them over. Use the cache menu or an exported file.
How do I report bugs or ideas?
Email support@slimppt.com with subject “Bug” or “Feature”, steps, expected vs actual, screenshots, and an optional sample pptx. Never paste API keys.