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SPECIFICTION
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Chroma Ad-Blocker

github.com

Free plan WindowsmacOSLinuxBrowser extension
Visit github.com
Spec score 8.5 #2 of 32 in Musical Tuner Apps

What it is

Chroma Ad-Blocker is a free, open-source Manifest V3 browser extension for local ad blocking in Chrome and Chromium-based browsers. It uses Chromium's declarative network request rules and includes exactly 300,000 static rules. Filtering supports Hagezi Pro Mini, EasyList, Fanboy Annoyance, Chroma's scriptlet library, and user-added lists. It can remove ad-related metadata from YouTube JSON payloads and redirect known Spotify web-player ad media to a packaged silent clip. Selected media domains can be routed through HTTP, HTTPS, SOCKS4, or SOCKS5 proxies while other browser traffic remains direct. Chroma says it has no telemetry, analytics, or tracking servers, and keeps core settings, diagnostics, subscriptions, proxy settings, statistics, and logs on the device. When Chrome reports matched rules, a local log stores the latest 500 matches, possibly including full request URLs and rule metadata. Installation involves extracting a ZIP from GitHub releases and loading the unpacked extension in Chrome or Edge. Ad acceleration is for YouTube, not Amazon Prime Video or Twitch.

Spec sheet

Product
Chroma is a free, open-source Manifest V3 browser extension for local ad blocking in Chrome and Chromium-based browsers.Read 9 Oct 2026 · github.com
Free plan
YesRead 20 Sep 2026 · github.com
Privacy
The extension says it does not operate telemetry, analytics, or tracking servers, and keeps core settings, diagnostics, subscriptions, proxy settings, statistics, and logs on the user's device.Read 9 Oct 2026 · github.com
Support
The privacy policy directs questions to [email protected].Read 9 Oct 2026 · github.com
Maker
The repository describes Chroma as a solo project and credits Dabrogost.Read 9 Oct 2026 · github.com
Browser support
multiple-browsersRead 20 Sep 2026 · github.com
Custom filter lists
YesRead 20 Sep 2026 · github.com
Device coverage
browser-onlyRead 20 Sep 2026 · github.com
Element picker
YesRead 20 Sep 2026 · github.com
Filtering
It supports Hagezi Pro Mini, EasyList, Fanboy Annoyance, its bundled scriptlet library, and user-added filter lists.Read 9 Oct 2026 · github.com
Installation
Chroma is distributed through GitHub releases, and installation involves extracting a ZIP and loading the unpacked extension in Chrome or Edge.Read 9 Oct 2026 · github.com
Local request log
When Chrome exposes matched-rule feedback, Chroma stores a local log of the newest 500 reported matches, which can include full request URLs and rule metadata.Read 9 Oct 2026 · github.com
Network blocking
It uses Chromium declarative network request rules and packages exactly 300,000 static rules.Read 9 Oct 2026 · github.com
Platform limitation
Ad acceleration supports YouTube and is not available for Amazon Prime Video or Twitch.Read 9 Oct 2026 · github.com
Proxy credentials
HTTP/HTTPS proxy credentials are stored locally in obfuscated form with a bundled extension key, which the privacy policy says is not strong encryption.Read 9 Oct 2026 · github.com
Proxy routing
It can route selected media domains through HTTP, HTTPS, SOCKS4, or SOCKS5 proxies while keeping unrelated browser traffic direct.Read 9 Oct 2026 · github.com
Remote lists
Remote filter lists are fetched over HTTPS, parsed locally, and subject to size and rule-budget limits; supported scriptlets are limited to Chroma's shipped implementations.Read 9 Oct 2026 · github.com
User scripts
Advanced user-added scriptlet resources run as executable JavaScript in the page's MAIN world, and Chroma says it does not audit or sandbox their intent.Read 9 Oct 2026 · github.com
Video and music
It strips ad-related metadata from YouTube JSON payloads and redirects known Spotify web-player ad media to a packaged silent clip.Read 9 Oct 2026 · github.com

Plans and prices

Free Free Free for everyone, forever Read 9 Oct 2026 · github.com

Every Chroma Ad-Blocker plan and price →

Strong points and limits

Strong points

  • Free and open source
  • Exactly 300,000 packaged static rules
  • Supports several filter lists and user-added lists
  • Settings and logs remain on the device
  • Routes selected media domains through multiple proxy types

Limits

  • Installation requires loading an unpacked extension
  • Proxy credentials are obfuscated, not strongly encrypted
  • User-added scriptlets run as page JavaScript without auditing
  • Ad acceleration is unavailable for Amazon Prime Video and Twitch

Who it suits

Chroma suits users seeking local browser ad blocking with configurable filter lists and optional proxy routing for selected media domains. It is limited to Chrome and Chromium-based browser use.

Verdict

Chroma offers local filtering and selective proxy routing without operating telemetry or tracking servers. Review its local URL logging, proxy credential handling, and user-script limitations before configuring it.

Where Specifiction places it

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