View prettified HTML source of any page in a clean side panel.
Overview
User Growth & Download Statistics
Manifest V3 Add-on
- By:
- Stephen
- Daily users:
- 1
- Version:
- 1.0.0 Last updated: 2026-06-27
- Version code:
- 6322823
- Creation date:
- 2026-06-24
- Risk:
- Very low risk impact High risk likelihood
- Permissions:
- Size:
- 12.53KB
- Source:
- Firefox Add-ons Store
- Data ingested on:
- 2026-07-26
- Compare stats and ranking:
- HTML Source Viewer vs HTML Viewer
- HTML Source Viewer vs Html Viewer App
- HTML Source Viewer vs Multi-Panel Source Viewer
Ranking
For Developers
Contact the developer
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Is HTML Source Viewer Safe?
Risk impact
Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.
HTML Source Viewer does not require any sensitive permissions.
Risk impact analysis details
Risk likelihood
Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.
HTML Source Viewer is recently added, and hasn't been around long enough for us to gather enough data to accurately assess its risk level.
Risk likelihood analysis details
- High This extension was recently updated in the past month. New updates may not be stable or safe.
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- Medium **** ********* *** ***** ** *** **** * ******* *** ********** *** *** ** ****** ** *****
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