Software · head to head
Violentmonkey vs Night Eye
The short version
- Each has a real cost: Violentmonkey smaller script ecosystem compared to Tampermonkey which has larger user base and more available scripts; Night Eye can impact browser performance, especially on older or less powerful devices due to color conversion processing
- They diverge on capability: Violentmonkey covers Userscript support, Night Eye covers Dark mode.
Where they differ
Only the attributes on which Violentmonkey and Night Eye actually diverge.
| Attribute | Violentmonkey | Night Eye |
|---|---|---|
| Platforms | Chrome, Firefox, Edge | Chrome, Safari, Edge, Firefox, Opera, Brave |
| Founded | 2013 | 2018 |
Identical on both: starting price (Free), pricing model (Unknown), 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 Violentmonkey
- Userscript support
- Clean interface
- Cloud sync
- Script editor
Only in Night Eye
- Dark mode
- Color analysis
- Image preservation
- Per-site settings
- Safari support
Both cover
- Chrome support
- Firefox support
- Edge support
- Opera support
What people use each for
The jobs each tool is most often brought in to do.
Violentmonkey
- Run open-source userscripts to customize or automate web pagesnot Night Eye
- Import scripts compatible with Greasemonkey and Tampermonkey formatsnot Night Eye
- Sync scripts and settings across browsers via Dropbox, OneDrive, Google Drive, or WebDAVnot Night Eye
- Batch import/export scripts as zip filesnot Night Eye
Night Eye
- Force a consistent dark mode on websites that don't natively support onenot Violentmonkey
- Reduce eye strain and blue light exposure during night browsing via a built-in blue-light filternot Violentmonkey
- Per-site color, brightness, contrast, and saturation customizationnot Violentmonkey
- Selectively convert only icons/small images rather than full images to preserve visual fidelity in dark modenot Violentmonkey
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
Violentmonkey
- Smaller script ecosystem compared to Tampermonkey which has larger user base and more available scripts
- Less marketing and visibility results in lower adoption compared to more widely-known alternatives
- Community maintenance model means slower feature development compared to commercial alternatives
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
Pricing, plan by plan
Violentmonkey
FreeNo published plan breakdown. See the Violentmonkey review.
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
Which should you pick?
Choose Violentmonkey if
- You need userscript support.
- You want to start without paying.
- You work on Chrome, Firefox, Edge.
- You also want clean interface.
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.
Questions people ask
- Is Violentmonkey or Night Eye better?
- Neither clearly leads. Violentmonkey starts at Free and Night Eye at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, Violentmonkey or Night Eye?
- Violentmonkey starts at Free and Night Eye at Free.
- Does Violentmonkey or Night Eye run on more platforms?
- Violentmonkey runs on Chrome, Firefox, Edge. Night Eye runs on Chrome, Safari, Edge, Firefox, Opera, Brave.
- Can I use Violentmonkey for free?
- Both have a free tier, so you can try either at no cost before committing.
- What is Violentmonkey best used for?
- Violentmonkey is most often used for run open-source userscripts to customize or automate web pages, import scripts compatible with greasemonkey and tampermonkey formats, sync scripts and settings across browsers via dropbox, onedrive, google drive, or webdav, batch import/export scripts as zip files. Of those, run open-source userscripts to customize or automate web pages and import scripts compatible with greasemonkey and tampermonkey formats are not what Night Eye is typically brought in for.
- What can Violentmonkey do that Night Eye cannot?
- Violentmonkey covers Userscript support, Clean interface, Cloud sync, Script editor. Night Eye covers Dark mode, Color analysis, Image preservation, Per-site settings. Both handle Chrome support, Firefox support, Edge support, Opera support.
Answered from the vendors’ own pages
Violentmonkey: Is Violentmonkey open-source?
Yes. Violentmonkey is fully open-source and available on GitHub, making it free to use and community-maintained unlike Tampermonkey which has a larger proprietary ecosystem.
SourceNight 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.
SourceViolentmonkey: What browsers does Violentmonkey support?
Violentmonkey works on browsers with WebExtensions support, including Chrome, Firefox, Edge, and other Chromium-based browsers.
SourceNight 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.
SourceViolentmonkey: How does Violentmonkey compare to Tampermonkey in performance?
Community benchmarks show Violentmonkey uses about 15 to 30 percent less RAM on Chrome compared to Tampermonkey when managing many open tabs.
SourceNight Eye: Which browsers does Night Eye support?
Night Eye is available for Chrome, Safari, Microsoft Edge, Firefox, Opera, Brave, and other Chromium-based browsers.
SourceViolentmonkey: What is the current version of Violentmonkey?
Violentmonkey reached version 2.46.0 as of July 31, 2026, with active ongoing development and regular updates to the open-source project.
SourceNight 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.
SourceRelated pages
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