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markitdown.ai vs STL File Converter

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

markitdown.ai compared with STL File Converter
Detailmarkitdown.ai logo markitdown.aiSTL File Converter logo STL File Converter
What it doesConvert documents and web pages into Markdown for AI workflows Free browser-based converter for 3D model files and image-to-STL
StageNot given Not given
FoundedNot given Not given
Based inNot given Not given
Pricing modelFreemium Freemium
PricingFree anonymous trial: up to 10 MB and 25 pages, 3 conversions per IP per hour, 10 per day. Lite: $20/month (150 credits/month, 100 MB max file size, 100 pages/file). Pro: $50/month (500 credits/month, 200 MB max file size, 200 pages/file). Max: $100/month (1200 credits/month, unlimited file size). A Free for image-to-STL conversion, 3D file format conversion, and preview. AI generation: Starter $6.90 (60 credits), Standard $14.90 (200 credits), Professional $29.90 (500 credits). One-time payment, no subscription. 20 credits per AI generation.
Key features
  • Convert PDFs, Word, PowerPoint, Excel, images and HTML to Markdown
  • Side-by-side source and Markdown preview in viewer
  • Automatic OCR for scanned pages and images
  • Batch conversion with per-file status tracking
  • Developer API with webhooks and polling
  • Preserved structure: headings, lists, tables and reading order
  • AI figure enhancement and image understanding (paid plans)
  • Markdown export to HTML, text and PDF
  • Saved conversion history with storage by plan
  • Support for web page URLs with server-side fetching
  • Convert PNG, JPG, WEBP to STL up to 10 MB
  • Heightmap mode for photo reliefs
  • Extrude mode for logos and silhouettes
  • 3D preview before download
  • Convert 3D files (STL, OBJ, GLB, glTF, 3MF) up to 50 MB
  • Local file processing in browser
  • Adjust depth and base settings
  • Adjust output size
  • AI image-to-3D generation with credits
What makes it different
  • Preserves document structure in Markdown so AI models and RAG pipelines receive predictable text
  • Automatic OCR handles scanned and image-based documents the same as text-layer PDFs
  • Free anonymous trial requires no account or payment to test a file
  • Independent service unaffiliated with Microsoft MarkItDown open-source library
  • All free tools run locally in your browser with no uploads or signup needed
  • No file size caps, watermarks or paywall after limited conversions
  • Open-source 3D engine (three.js) powers conversions
  • Credits never expire and are one-time payment only
  • Built specifically for photo reliefs, logos and decorative plates
Community votes00
DR (Domain Rating by Ahrefs)27 +1 (up) since last check1 no change since last check
Trust Flow (Majestic)272
Citation Flow (Majestic)3219
Referring domains (Majestic)737

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