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SlideFast slidefast.io

Can AI replace SlideFast?

A personal prompt-to-carousel tool is a solid weekend build, but SlideFast's polished editor, reusable brand system, asset library, dependable multi-format exports, and publishing workflow take sustained product work.

Verdict: Half-bot · AI gets you partway; the hard part stays hardBuild time: weekend
Half-bot

01What it costs

$8.07/moStarter, monthly
$96.84per year at that price

Checked Aug 14, 2026 · source: slidefast.io.

PlanMonthlyBilled yearlyWhat you get
Starter$8.07$5.65/mo5 AI carousels/month, 50 edit messages/month, unlimited exports
Pro$21.91$15.34/mo50 AI carousels/month, 500 edit messages/month, unlimited exports, custom themes/brand kit, no watermark
MAX$44.98$31.49/moHigher carousel/edit allowance than Pro; exact numeric caps were not exposed on the live pricing card

Hidden costs: Carousel creation and AI revisions are separately capped; MAX's exact numeric caps were not publicly exposed. USD amounts vary with EUR/USD exchange rates.

02Could AI build it for you?

The core job: Turn a topic, URL, or rough notes into a structured social carousel, edit the slides, apply a brand theme, and export a LinkedIn-ready PDF.

What a working version needs:

  • LLM API key
  • PDF rendering library
  • local image storage
  • optional URL content extractor

The core generator is approachable; repeatable visual quality and last-mile publishing are the durable product.

03What you'd give up

  • polished visual editor
  • reusable brand and asset library
  • reliable PDF and image exports
  • multi-channel publishing workflow
  • hosted storage and sharing

They pay to skip the fragile parts between an AI draft and a consistently branded carousel that is actually ready to publish.

04Free and cheaper alternatives

Piktochart Freefree

Sixty AI credits refresh each month; it makes carousels, not your entire social calendar.

piktochart.com →

05The build prompt

Paste this into an AI coding tool (such as Claude, ChatGPT, Lovable or Replit) to build your own version.

prompt.txt
Build me a local AI social-carousel maker to replace SlideFast. Requirements:

- Use Node, Express, SQLite, and a single-page vanilla JS interface.
- A composer accepts a topic, pasted notes, or a URL; URL fetching extracts
  readable article text on the server.
- Send the source to one LLM (API key in .env) and require structured JSON:
  hook, 5-10 slides, CTA, LinkedIn caption, and hashtags.
- Show every slide in a 1080x1350 canvas preview with inline text editing,
  drag-to-reorder, duplicate, delete, and regenerate-one-slide actions.
- Include 4 fixed layouts: cover, statement, bullets, and CTA. Auto-fit text
  within strict bounds and warn when copy is too dense.
- Load brand settings from brand.json: logo, two fonts, 4 colors, and footer.
  Provide a small settings panel that updates and saves this file.
- Let me upload local images and assign one to a slide; store them under
  data/assets and never send them anywhere except the optional LLM call.
- Save projects to SQLite and autosave edits after a short debounce.
- Export every slide as PNG and the full carousel as a LinkedIn-ready PDF
  using Playwright, with deterministic dimensions and embedded fonts.
- No accounts, payments, analytics, collaboration, or direct social posting.
- Ship one sample project and a README covering setup, .env, brand.json,
  supported input types, and export commands.

06Open-source starting points

  • PptxGenJS: Open-source JavaScript presentation generator that can provide the structured rendering and export layer.
Sponsor slot · openFeatured alternative to SlideFast. A labeled card for one relevant tool.
Book this spot →

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App prices, verdicts, alternatives and build prompts are adapted from Can I Vibecode It? (MIT License, © 2026 Rob Hallam). Each price shows the date it was checked and its source. Prices change; confirm on the vendor's site before you decide.