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DH Tools vs Kōōihaus™

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

DH Tools compared with Kōōihaus™
DetailDH Tools logo DH ToolsKōōihaus™ logo Kōōihaus™
What it does46+ free online tools for PDFs, images, code, and utilities that process locally in your browser without uploading files to servers Free paint coverage calculator for interior and exterior painting projects
StageStartup Established
Founded2026 2021
Based inTR US
Pricing modelFreemium Free
PricingAll 46 core tools are free with unlimited daily usage. Optional VIP PRO membership available for unlimited AI OCR, ad-free experience, 10x hardware acceleration, and priority server bandwidth. Not given
Key features
  • PDF compression up to 85% file size reduction
  • PowerPoint to PDF conversion (PPTX/PPT)
  • PDF to image conversion (PNG, JPG at 300 DPI)
  • AI OCR to extract tables from images to Excel
  • PDF merging and combining
  • Batch image compression (20+ photos simultaneously)
  • AI background remover for photos
  • JSON formatter and validator
  • QR code generator for URLs, Wi-Fi, text
  • IP lookup and geolocation mapping
  • Interior paint calculator
  • Exterior paint calculator
  • Metric and imperial units
  • Primer calculation option
  • Ceiling painting option
  • Gable area calculation for exterior
  • Instant results display
What makes it different
  • All 46 core tools permanently free with no registration required
  • Direct alternative to subscription-based utility websites
  • Supports files up to device RAM capacity with no artificial limits
  • Handles complex calculations like doors, windows, and multiple stories automatically
  • Works for both interior and exterior projects
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)3 −2 (down) since last check20 no change since last check
Trust Flow (Majestic)14
Citation Flow (Majestic)3023
Referring domains (Majestic)5237

7 details filled in for both companies.

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