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KB Reducer vs RAR.now

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

KB Reducer compared with RAR.now
DetailKB Reducer logo KB ReducerRAR.now logo RAR.now
What it doesFree online tool to compress images to exact KB size Online RAR converter with REST API, batch processing, and file tools
StageNot given Not given
FoundedNot given Not given
Based inNot given Not given
Pricing modelFree Freemium
PricingNot given Guest: Free, 10 conversions/day, 10 MB file limit. Free Account: Free forever, 20 conversions/day, 50 MB file limit. Premium: €9.99/month, unlimited conversions, 200 MB file limit, 365-day retention, API access (60 req/min). Premium Plus: €29.99/month, everything in Premium plus 1 GB uploads, foreve
Key features
  • Supports JPG, JPEG, PNG, and WebP formats up to 10MB
  • Binary-search algorithm hits target within ±5 KB
  • Preset compression sizes: 20KB, 50KB, 100KB, 200KB
  • All processing happens locally in browser with no server upload
  • Automatic dimension scaling for very small targets
  • Lightweight compression logic optimized for low-RAM devices
  • REST API for programmatic conversion with JSON requests
  • Batch file uploads and processing
  • API rate limits and usage tracking via dashboard
  • Automatic file deletion after retention period
  • Image editing and compression tools
  • HTTPS encryption for secure uploads
  • White-label option for Premium Plus with no branding in output
  • Webhooks and batch API on Premium Plus
  • Commercial license for reselling conversions to clients
What makes it different
  • Browser-based processing with complete privacy - images never leave your device
  • Exact KB targeting with binary search instead of quality slider guessing
  • Completely free with no daily limits, signup, or watermarks
  • Built specifically for exam forms, job portals, and visa applications with exact KB requirements
  • Optimized for low-end devices with limited RAM and older browsers
  • Free to use with no credit card required for core tools
  • Simple REST API with only three endpoints and no SDK installation needed
  • Credit-based pricing with no overage charges or surprise invoices
  • Refund within 48 hours of first payment if unused
  • Premium Plus at 30% cheaper per credit with monthly subscription
Community votes00
DR (Domain Rating by Ahrefs)5 +3 (up) since last check16 −1 (down) since last check
Trust Flow (Majestic)62
Citation Flow (Majestic)1913
Referring domains (Majestic)96

4 details filled in for both companies.

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