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Browser Extensions · head to head

Night Eye vs WhatFont

Night Eye logo

Night Eye

Browser Extensions

Dark mode on any website

From
Free
Rated
-
WhatFont logo

WhatFont

Browser Extensions

Identify fonts on web pages

From
Free
Rated
-

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; WhatFont can only detect web-safe fonts and fonts loaded via web font services
  • They diverge on capability: Night Eye covers Dark mode, WhatFont covers Font detection.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

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

Attributes where Night Eye and WhatFont differ
AttributeNight EyeWhatFont
PlatformsChrome, Safari, Edge, Firefox, Opera, BraveChrome, Firefox, Arc
Founded20182011

Identical on both: starting price (Free), pricing model (Unknown), 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
  • Opera support

Only in WhatFont

  • Font detection
  • Typography info
  • Service detection
  • Hover inspection

Both cover

  • Chrome support
  • Firefox support
  • Edge support
  • Safari 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 WhatFont
  • Reduce eye strain and blue light exposure during night browsing via a built-in blue-light filternot WhatFont
  • Per-site color, brightness, contrast, and saturation customizationnot WhatFont
  • Selectively convert only icons/small images rather than full images to preserve visual fidelity in dark modenot WhatFont

WhatFont

  • Identifying typefaces used on competitor websites for design researchnot Night Eye
  • Sourcing font inspiration from high-performing landing pagesnot Night Eye
  • Discovering web font services like Google Fonts or Typekit on sitesnot 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

WhatFont

  • Can only detect web-safe fonts and fonts loaded via web font services
  • Does not work on images with embedded text or rasterized typography
  • Limited to inspecting single text elements at a time

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

WhatFont

Free
  • FreeFree
    • Font inspection on any website
    • Font family identification
    • Font size and weight detection

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.

Choose WhatFont if

  • You need font detection.
  • You want to start without paying.
  • You work on Chrome, Firefox, Arc.
  • You also want typography info.

Questions people ask

Is Night Eye or WhatFont better?
Neither clearly leads. Night Eye starts at Free and WhatFont at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Night Eye or WhatFont?
Night Eye starts at Free and WhatFont at Free.
Does Night Eye or WhatFont run on more platforms?
Night Eye runs on Chrome, Safari, Edge, Firefox, Opera, Brave. WhatFont runs on Chrome, Firefox, Arc.
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 WhatFont is typically brought in for.
What can Night Eye do that WhatFont cannot?
Night Eye covers Dark mode, Color analysis, Image preservation, Per-site settings. WhatFont covers Font detection, Typography info, Service detection, Hover inspection. Both handle Chrome support, Firefox support, Edge support, Safari 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
WhatFont: How do I use WhatFont to inspect fonts?

Click the WhatFont icon in your browser toolbar to activate it, then hover over any text on a webpage to see the font name and details in a pop-up. Click the text to reveal additional information like font style, weight, color, and font samples.

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
WhatFont: What browsers does WhatFont support?

WhatFont works on Google Chrome, Firefox, and Arc browser. It is available as a free extension in each browser's extension store.

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
WhatFont: Is WhatFont free?

Yes. WhatFont is a completely free browser extension with no paid tier or premium features. It is maintained as a free tool for designers and developers.

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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