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Browser Extensions · head to head

Night Eye vs SimilarWeb

Night Eye logo

Night Eye

Browser Extensions

Dark mode on any website

From
Free
Rated
-
Full reviewWebsite
SimilarWeb logo

SimilarWeb

Browser Extensions

Website traffic and competitive analysis

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Night Eye can impact browser performance, especially on older or less powerful devices due to color conversion processing; SimilarWeb browser extension data accuracy is lower than full platform
  • They diverge on capability: Night Eye covers Dark mode, SimilarWeb covers Traffic analytics.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Night Eye and SimilarWeb actually diverge.

Attributes where Night Eye and SimilarWeb differ
AttributeNight EyeSimilarWeb
Pricing modelUnknownfreemium
PlatformsChrome, Safari, Edge, Firefox, Opera, BraveWeb, Browser Extension
Founded20182007

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated), category (Browser Extensions).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Night Eye

  • Dark mode
  • Color analysis
  • Image preservation
  • Per-site settings
  • Safari support
  • Opera support

Only in SimilarWeb

  • Traffic analytics
  • Audience insights
  • Competitor research
  • Industry analysis

Both cover

  • Chrome support
  • Firefox support
  • Edge support

What people use each for

The jobs each tool is most often brought in to do.

Night Eye

  • Force a consistent dark mode on websites that don't natively support onenot SimilarWeb
  • Reduce eye strain and blue light exposure during night browsing via a built-in blue-light filternot SimilarWeb
  • Per-site color, brightness, contrast, and saturation customizationnot SimilarWeb
  • Selectively convert only icons/small images rather than full images to preserve visual fidelity in dark modenot SimilarWeb

SimilarWeb

  • Analyzing competitor advertising across display, search, socialnot Night Eye
  • Understanding traffic loss to search and AI recommendationsnot Night Eye
  • Tracking brand visibility across ChatGPT and AI chatbotsnot Night Eye
  • Optimizing Amazon product placement with marketplace analyticsnot Night Eye
  • Identifying high-intent prospects at optimal buying momentsnot Night Eye

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Night Eye

  • Can impact browser performance, especially on older or less powerful devices due to color conversion processing
  • Ineffective on web applications with fixed color schemes that cannot be altered
  • Does not work offline or on non-web content
  • Limited customization on websites that have their own built-in dark mode implementation

SimilarWeb

  • Browser extension data accuracy is lower than full platform
  • Full platform pricing is not transparent and requires quote-based inquiry

Pricing, plan by plan

Night Eye

Free
  • LiteFree
    • Dark mode on up to 5 websites
    • No ads
  • Pro$9/year
    • Up to 3 browsers
  • Pro Max$14/year
    • Up to 6 browsers
  • Lifetime$40/mo
    • Unlimited browsers
    • Lifetime updates

SimilarWeb

Free
  • FreeFree
    • Traffic overview
    • Engagement metrics
    • Similar sites

Which should you pick?

Choose Night Eye if

  • You need dark mode.
  • You want to start without paying.
  • You work on Chrome, Safari, Edge, Firefox, Opera, Brave.
  • You also want color analysis.
Night Eye review

Choose SimilarWeb if

  • You need traffic analytics.
  • You want to start without paying.
  • You work on Web, Browser Extension.
  • You also want audience insights.
SimilarWeb review

Questions people ask

Is Night Eye or SimilarWeb better?
Neither clearly leads. Night Eye starts at Free and SimilarWeb at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Night Eye or SimilarWeb?
Night Eye starts at Free and SimilarWeb at Free.
Does Night Eye or SimilarWeb run on more platforms?
Night Eye runs on Chrome, Safari, Edge, Firefox, Opera, Brave. SimilarWeb runs on Web, Browser Extension.
Can I use Night Eye for free?
Both have a free tier, so you can try either at no cost before committing.
What is Night Eye best used for?
Night Eye is most often used for force a consistent dark mode on websites that don't natively support one, reduce eye strain and blue light exposure during night browsing via a built-in blue-light filter, per-site color, brightness, contrast, and saturation customization, selectively convert only icons/small images rather than full images to preserve visual fidelity in dark mode. Of those, force a consistent dark mode on websites that don't natively support one and reduce eye strain and blue light exposure during night browsing via a built-in blue-light filter are not what SimilarWeb is typically brought in for.
What can Night Eye do that SimilarWeb cannot?
Night Eye covers Dark mode, Color analysis, Image preservation, Per-site settings. SimilarWeb covers Traffic analytics, Audience insights, Competitor research, Industry analysis. Both handle Chrome support, Firefox support, Edge support.

Answered from the vendors’ own pages

Night Eye: What is Night Eye?

Night Eye is a browser extension that applies dark mode to websites by analyzing page colors and converting them into a comfortable dark theme. It preserves photos and videos and offers customization options for brightness, contrast, and blue light filtering.

Source
SimilarWeb: How much does Similarweb cost?

Similarweb does not publish pricing. Custom packages are available for businesses and enterprises. Self-service options are available for entrepreneurs and small teams. Customers must start a free trial or contact sales to receive a quote.

Source
Night Eye: What is the pricing for Night Eye?

Night Eye Lite is free with dark mode on up to 5 websites. Night Eye Pro costs $9/year for up to 3 browsers, Night Eye Pro Max costs $14/year for up to 6 browsers, and lifetime updates cost $40 for unlimited use across 10 browsers.

Source
SimilarWeb: Does Similarweb offer a free trial?

Yes. Similarweb offers free trials for its various products. Users can start a free trial through their registration page or contact support to switch between different product trials.

Source
Night Eye: Which browsers does Night Eye support?

Night Eye is available for Chrome, Safari, Microsoft Edge, Firefox, Opera, Brave, and other Chromium-based browsers.

Source
SimilarWeb: What products does Similarweb offer?

Similarweb offers the Competitive Intelligence Suite, Strategic SEO Suite, Ads Intelligence Suite, Gen AI Intelligence Suite, AI Studio with natural language queries, custom data feeds, API access, and managed services with custom dashboards.

Source
Night Eye: Does Night Eye track my browsing?

No. Night Eye does not monitor, process, or store browsing activity. Webpage conversion is performed locally on the user's device. No ads appear in the free Lite version.

Source
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