Is Youtube Downloader Safe?
Youtube Downloader — Nerq Trust Score 55.0/100 (C grade). Score based on 2 independent trust signals. Last analyzed: 2026-04-12
Youtube Downloader is a Firefox extension with a Nerq Trust Score of 55.0/100 (C), based on 3 independent data dimensions. Last analyzed: 2026-04-12 Security: 90/100. Popularity: 45/100. Data sourced from addons.mozilla.org metadata, permissions analysis, and source code availability. Last updated: 2026-04-12. Machine-readable data (JSON).
Is Youtube Downloader safe?
Trust Score Breakdown — Youtube Downloader has a Nerq Trust Score of 55.0/100 (C). Measured across 2 independent trust signals (as of 2026-04-12).
What is Youtube Downloader's trust score?
Youtube Downloader has a Nerq Trust Score of 55.0/100, earning a C grade. This score is based on 2 independently measured dimensions including security, maintenance, and community adoption.
What are the key security findings for Youtube Downloader?
Youtube Downloader's strongest signal is security at 90/100. No known vulnerabilities have been detected.
What is Youtube Downloader and who maintains it?
| Author | savefrom |
| Category | Firefox Add-ons |
| Source | N/A |
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Safety Guide: Youtube Downloader
What is Youtube Downloader?
Youtube Downloader is a Firefox add-on — SaveFrom.net helper will enable you to download files from YouTube.com, FaceBook.com, Vimeo.com, Daylimotion.com, VK.com, Odnoklassniki.ru, Soundcloud.com and more than 40 other just in one click..
How to Verify Safety
Review permissions on addons.mozilla.org. Check if source code is available.
You can also check the trust score via API: GET /v1/preflight?target=SaveFrom.net helper all-in-1 / youtube downloader
Key Safety Concerns for Firefox add-on
When evaluating any Firefox add-on, watch for: excessive permissions, data harvesting.
Measured Signals
Youtube Downloader has a Nerq Trust Score of 55/100 (C). This score is a composite of automated measurements of security, maintenance, community, and quality signals.
Key Takeaways
- Youtube Downloader has a Trust Score of 55/100 (C).
- The score is a measured composite — it is not a suitability judgment. Evaluate the individual signals against your own requirements.
- Query the current measured values via the Nerq API.
Detailed Score Analysis
| Dimension | Score |
|---|---|
| Security | 90/100 |
| Maintenance | 50/100 |
| Popularity | 45/100 |
| Quality | 40/100 |
| Community | 35/100 |
Based on 5 dimensions. Data from addons.mozilla.org metadata, permissions analysis, and source code availability.
What data does Youtube Downloader collect?
Youtube Downloader has a privacy score of 90/100. Review the documentation and privacy policy for data handling details.
Full analysis: Youtube Downloader Privacy Report · Privacy review
Is Youtube Downloader secure?
Security score: 90/100 (0-100, higher = fewer measured security issues).
Nerq monitors this entity against NVD, OSV.dev, and registry-specific vulnerability databases for ongoing security assessment.
Full analysis: Youtube Downloader Security Report
How we calculated this score
Youtube Downloader's trust score of 55.0/100 (C) is computed from addons.mozilla.org metadata, permissions analysis, and source code availability. The score reflects 5 independent dimensions: security (90/100), maintenance (50/100), popularity (45/100), quality (40/100), community (35/100). Each dimension is weighted equally to produce the composite trust score.
Nerq analyzes over 7.5 million entities across 26 registries using the same methodology, enabling direct cross-entity comparison. Scores are updated continuously as new data becomes available.
Signals last measured on April 12, 2026. Data version: 1.0.
Full methodology documentation · Machine-readable data (JSON API)
Frequently Asked Questions
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Disclaimer: Nerq trust scores are automated measurements based on publicly available signals. They are not endorsements, verdicts, or guarantees of suitability. Always evaluate the signals against your own requirements.