Software · head to head
Dark Reader vs Mercury Reader
The short version
- Each has a real cost: Dark Reader cannot modify PDF files displayed in browsers; Mercury Reader mercury Reader's underlying engine (Postlight Parser) is free open source software licensed under Apache License 2.0, per the GitHub repository, with no paid tier
- They diverge on capability: Dark Reader covers Dark mode, Mercury Reader covers Content extraction.
Where they differ
Only the attributes on which Dark Reader and Mercury Reader actually diverge.
| Attribute | Dark Reader | Mercury Reader |
|---|---|---|
| Pricing model | Unknown | free |
| Platforms | Chrome, Firefox, Safari, Edge | Chrome, Firefox, Edge |
| Founded | 2014 | 2015 |
Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated), category (Unknown).
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 Dark Reader
- Dark mode
- Custom brightness
- Contrast adjustment
- Site-specific settings
- Safari support
Only in Mercury Reader
- Content extraction
- Clean reading view
- Custom themes
- Font customization
Both cover
- Chrome support
- Firefox support
- Edge support
What people use each for
The jobs each tool is most often brought in to do.
Dark Reader
- Applying dark mode to websites that don't natively support itnot Mercury Reader
- Reducing eye strain for night-time or extended browsingnot Mercury Reader
- Per-site brightness, contrast, and sepia customizationnot Mercury Reader
- Toggling dark mode on/off per domainnot Mercury Reader
- Accessibility use for light-sensitive usersnot Mercury Reader
Mercury Reader
No use cases recorded yet. See the Mercury Reader review.
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
Dark Reader
- Cannot modify PDF files displayed in browsers
- Performance impact on devices with limited resources
Mercury Reader
- Mercury Reader's underlying engine (Postlight Parser) is free open source software licensed under Apache License 2.0, per the GitHub repository, with no paid tier
Pricing, plan by plan
Dark Reader
FreeNo published plan breakdown. See the Dark Reader review.
Mercury Reader
Free- FreeFree
- Clutter removal
- Clean reading
- Custom themes
Which should you pick?
Choose Dark Reader if
- You need dark mode.
- You want to start without paying.
- You work on Chrome, Firefox, Safari, Edge.
- You also want custom brightness.
Choose Mercury Reader if
- You need content extraction.
- You want to start without paying.
- You work on Chrome, Firefox, Edge.
- You also want clean reading view.
Questions people ask
- Is Dark Reader or Mercury Reader better?
- Neither clearly leads. Dark Reader starts at Free and Mercury Reader at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, Dark Reader or Mercury Reader?
- Dark Reader starts at Free and Mercury Reader at Free.
- Does Dark Reader or Mercury Reader run on more platforms?
- Dark Reader runs on Chrome, Firefox, Safari, Edge. Mercury Reader runs on Chrome, Firefox, Edge.
- Can I use Dark Reader for free?
- Both have a free tier, so you can try either at no cost before committing.
- What is Dark Reader best used for?
- Dark Reader is most often used for applying dark mode to websites that don't natively support it, reducing eye strain for night-time or extended browsing, per-site brightness, contrast, and sepia customization, toggling dark mode on/off per domain. Of those, applying dark mode to websites that don't natively support it and reducing eye strain for night-time or extended browsing are not what Mercury Reader is typically brought in for.
- What can Dark Reader do that Mercury Reader cannot?
- Dark Reader covers Dark mode, Custom brightness, Contrast adjustment, Site-specific settings. Mercury Reader covers Content extraction, Clean reading view, Custom themes, Font customization. Both handle Chrome support, Firefox support, Edge support.
Answered from the vendors’ own pages
Dark Reader: Is Dark Reader free to use?
Yes, Dark Reader is completely free with no ads and no tracking. It does not send user data anywhere.
SourceDark Reader: How can I customize the dark mode in Dark Reader?
Users can configure brightness, contrast, and sepia filter settings to suit their specific needs, and selectively enable or disable Dark Reader for specific websites.
SourceDark Reader: What browsers does Dark Reader support?
Dark Reader is available for Chrome, Firefox, Safari, and Edge browsers across desktop and mobile platforms.
SourceDark Reader: Does Dark Reader work offline?
Yes, Dark Reader runs entirely on your device with no external dependencies. It analyzes web pages locally to generate dark themes.
Source