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GoToolsOnline vs Age by Serial Number

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

GoToolsOnline compared with Age by Serial Number
DetailGoToolsOnline logo GoToolsOnlineAge by Serial Number logo Age by Serial Number
What it does130+ free online tools for PDF, images, text, and media with no login or watermark Find how old a water heater, furnace or air conditioner is from its serial number
StageNot given Not given
FoundedNot given Not given
Based inIN Not given
Pricing modelNot given Free
PricingWeb tools are free with no signup required. API pricing: Free ($0/month, 100 calls/day), Pro ($9/month, 5,000 calls/day), Business ($29/month, 50,000 calls/day). Not given
Key features
  • PDF merge, compress, split, edit
  • Image compression with quality slider and bulk mode
  • Background removal for photos
  • Image resize and crop to aspect ratio
  • PDF to Word conversion
  • QR code generation
  • JSON formatter and validator
  • Word counter with reading time
  • Base64 encoder and decoder
  • Hash generator for SHA-256, SHA-384, SHA-512, MD5
  • Water heater serial number decoders for Bradford White, A.O. Smith, State, American, Whirlpool, Rheem, Ruud, Lochinvar
  • Furnace and air conditioner decoders for Goodman, Amana, Lennox, Carrier, Trane, American Standard
  • Water heater and furnace error code lookups
  • Water heater sizing calculator for tank and tankless models
  • Rheem water heater status light meanings
  • Goodman furnace LED flash code reference
  • Rinnai V53De tankless water heater code lookup
  • Rheem tankless water heater code lookup
What makes it different
  • No signup required for any tool
  • Built and maintained by one developer with no corporate backing
  • Browser-based tools keep your data local
  • Files deleted immediately after processing
  • Independent reference not affiliated with or endorsed by any manufacturer
  • Distinguishes manufacture date from installation date and emphasizes condition and maintenance over age
  • Covers safety guidance including gas smell warnings and professional contractor recommendations
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)Not checked yet no change since last check1 no change since last check
Trust Flow (Majestic)51
Citation Flow (Majestic)917
Referring domains (Majestic)74

3 details filled in for both companies.

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