MarkItDown vs Stability AI

Tagline

Convert PDF, Word, images, and public URLs into clean Markdown optimized for AI workflows

Enterprise-ready creative partner delivering professional-grade generative AI tools for media production

Category

Pricing

Rating

Platforms

API

Open source

Description

MarkItDown is an online converter inspired by Microsoft's open-source utility. It transforms various file formats—such as PDF, DOCX, PPTX, XLS/XLSX, HTML, CSV/TSV, EPUB, and IPYNB—into clean, structured Markdown. Built to optimize content for LLM prompts, RAG, search indexes, and Git workflows, it allows users to choose between secure browser-local processing or fast server-side conversion without requiring an account.

Stability AI is a multi-modal generative AI company that builds world-class open-source models for image, video, 3D, and audio production. It offers professional solutions like Brand Studio, enterprise deployment options, and models optimized for creative workflows.

Key features

• PDF to Markdown conversion
• Word to Markdown conversion
• Excel to Markdown conversion
• PowerPoint to Markdown conversion
• Image OCR for PNG, JPG, JPEG, and WebP
• Public URL conversion
• CSV and TSV table pasting
• Local browser-based OCR
• KaTeX math formula rendering
• Mermaid diagram rendering
• HTML export
• Heading-split ZIP export

• Image generation and editing
• 3D and 4D video models
• Brand Studio creative production platform
• Audio generation with Stable Audio
• Inpainting, recoloring, and upscaling
• On-environment model deployment
• Community License and Enterprise Membership
• Generative product photography solutions

Pros

• No account or registration is required to convert files on the free tier.
• Supports a wide variety of formats including PDF, DOCX, PPTX, XLS/XLSX, HTML, EPUB, and IPYNB.
• Source files are deleted immediately from the servers after conversion.
• Offers a Lifetime plan with a single one-time payment and no recurring subscriptions.
• Enables local, browser-side OCR without uploading files to a server.
• Allows direct conversion of public URLs and copy-pasted CSV/TSV tables.
• Supports math formula rendering with KaTeX and diagram rendering with Mermaid in the Pro editor.
• Payments are processed securely via Stripe, supporting major credit/debit cards and Alipay.

• Offers diverse Generative AI models across modalities including image, video, 3D, and audio.
• Achieved SOC 2 Type II and SOC 3 compliance, validating security controls through third-party auditing.
• Provides a commercial-safe platform with Brand Studio for end-to-end creative production.
• Enables users to deploy models directly in their own environments for advanced data customization.
• Offers a Community License and free exploration of Brand Studio for developers and small businesses.
• Collaborates with major industry partners such as EA, Amazon Web Services, UMG, WMG, and NVIDIA.
• Supports precise image control features like Recolor, Upscale, Inpaint, and Replace Background.
• Consistently releases open-weight models trained on fully licensed data, like Stable Audio 3.0.

Cons

• A programmatic developer API is currently on the roadmap and not yet publicly available.
• The free plan limits single file uploads to a maximum of 20MB.
• Free users are limited to batch processing a maximum of 3 files per conversion.
• The free account tier only saves up to 10 of the most recent Markdown results.
• High-accuracy AI OCR is restricted to 10 pages per month on the free tier and capped at 500 pages per month on Pro.

• Unused service credits automatically expire one year after the date of purchase or issuance.
• A minimum age of 18 is required to register and use their generative AI services.
• No official mobile apps are explicitly listed; operations are web or desktop environment focused.
• Enterprise-tier pricing is not transparently listed and requires speaking with a sales expert.
• Stability AI reserves the right to remove custom LoRA files from Brand Studio at any time without notice.

Pricing plans

• TrialUSD0
  • • Everything included in the Core plan
  • • Generate: text-to-image, sketch-to-image, image-to-image
  • • Edit: Inpaint, Outpaint, Remove Background
  • • Control: Style Guide, Style Transfer, Structure
• CoreUSD50/month
  • • For creative professionals who want both powerful AI capabilities and precise control
  • • Everything your team needs to produce
  • • Unlimited seats
  • • Option to purchase additional credits
• Enterprise—
  • • Everything in Core, plus…
  • • Custom models trained on brand identity
  • • Custom-built solutions
  • • Team & enterprise features

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