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StackTools vs DualTrans

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

StackTools compared with DualTrans
DetailStackTools logo StackTools DualTrans
What it doesPrivate browser tools for everyday work Immersive bilingual web translation and YouTube dual subtitles powered by DeepSeek, Claude, and Gemini
StageNot given Not given
FoundedNot given Not given
Based inNot given Not given
Pricing modelFree Freemium
PricingNot given Free plan: $0 forever with built-in Google and Edge translation engines and custom API key support. Pro plan: $2.99 USD per month or $24.99 USD per year (Save 33% with annual billing), includes official Cloud AI models (DeepSeek V3, Claude 3.5, Gemini 1.5), 10,000,000 AI tokens per month, YouTube du
Key features
  • PDF merge, split and compress
  • Convert Word, Excel, images to PDF
  • OCR, redact and protect PDFs
  • Compress images (JPG, PNG, WebP, AVIF)
  • Convert HEIC images
  • Background removal
  • On-device image upscale
  • Works offline after first load
  • No signup required
  • Immersive bilingual alignment with zero layout breakage
  • YouTube and video dual subtitles with synchronized real-time display
  • Instant selection lookup with floating quick-action ball
  • Six translation display styles (None, Dotted Underline, Marker, Quote Block, Subtle, Hover Learn)
  • Support for DeepSeek, Gemini, Claude, and OpenAI AI models
  • Bring Your Own Key (BYO-Key) with local privacy
  • Support for custom API endpoints and local Ollama models
  • Access to Google Translate and Microsoft Edge Neural Translate
  • Seamless cloud member synchronization across devices
  • 7-day money-back guarantee
What makes it different
  • Files process in your browser with no uploads to servers
  • No account, no credit card, no friction
  • Works offline after first visit
  • Preserves 100% of webpage structure and code without layout breakage
  • Native dual-line synchronized subtitles for YouTube videos
  • Absolute local privacy with client-side encryption of API keys and browsing data
  • Powered by cutting-edge LLMs with deep contextual understanding
  • Zero-config Pro Cloud AI with no overseas API key registration required
Free planNot given Not given
Open sourceNot given Not given
PlatformsNot given Not given
Public APINot given Not given
Community votes00
DR (Domain Rating by Ahrefs)8 no change since last check20 no change since last check
Trust Flow (Majestic)45
Citation Flow (Majestic)1418
Referring domains (Majestic)48

4 details filled in for both companies.

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