Verified Sep 2026

ActiveChromium engine 24/30 documented

UC Browser

A mobile browser built around data saving, downloads, and media tools, historically dominant across South and Southeast Asian markets.

Published by UCWeb (China) · Verified September 2026

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Runs on

macOSmacOS: Unavailable
WindowsWindows: Unknown
LinuxLinux: Unavailable
AndroidAndroid: Available
iOSiOS: Unknown

Choose it when

Consider UC Browser only where its download and data-saving tools solve a specific problem on a constrained Android connection.

Avoid it when

Avoid it when vendor jurisdiction, an undocumented telemetry position, or its history of privacy criticism matter to you.

Quick answers

Read straight off the verified record - every one of these is expanded with its source below.

Which platforms does UC Browser run on?: Documented on Android. Not available on macOS and Linux.
Can I install Chrome extensions?: No - the Chrome Web Store is not supported.
Does it block trackers out of the box?: Yes - tracker or ad blocking is on by default. A built-in ad blocker is documented.
Does it have built-in AI features?: No AI capability in this record is documented as built in.
Is it open source?: Proprietary
Is it still being developed?: Active - Still updated for Android, with a user base concentrated in Asian markets.

What UC Browser does

Open any row for the wording and the source behind it

Privacy and tracking

2 built in · 2 undocumented

Blocks trackers by defaultBlocks trackers by default: Built in
A built-in ad blocker is documented.
Anti-fingerprintingAnti-fingerprinting: Unknown
Telemetry postureTelemetry posture: Unknown
Built-in VPN or proxyBuilt-in VPN or proxy: Built in
A bundled VPN feature is documented.
Private windowsAn incognito mode is available that does not retain local browsing history.
An incognito mode is available that does not retain local browsing history.
Default search engineConfigurable

Extensions and blocking

1 built in · 4 not available

Chrome Web StoreChrome Web Store: Unsupported
Firefox Add-onsFirefox Add-ons: Unsupported
Native content blockingNative content blocking: Built in
Ad blocking is built in.
Manifest V3Manifest V3: Unavailable
Manifest V2Manifest V2: Unavailable
Known limitationsThere is no third-party extension platform; added capability comes from bundled features instead.
There is no third-party extension platform; added capability comes from bundled features instead.

Workflow

2 built in · 7 not available · 2 undocumented

Vertical tabsVertical tabs: Unavailable
Tab treesTab trees: Unavailable
Workspaces or spacesWorkspaces or spaces: Unavailable
ProfilesProfiles: Unavailable
Split viewSplit view: Unavailable
SidebarSidebar: Unavailable
Reader modeReader mode: Unknown
Reader mode is not documented.
Command paletteCommand palette: Unavailable
Sync across devicesSync across devices: Built in
Cloud storage and sync features are documented.
TranslationTranslation: Built in
Translation is documented.
Progressive web appsProgressive web apps: Unknown
Progressive web app behaviour is not documented.

AI features

8 not available · 1 undocumented

Built-in assistantBuilt-in assistant: Unknown
Assistant features are not clearly documented.
Page summarisationPage summarisation: Unavailable
Acts on pages for youActs on pages for you: Unavailable
AI answer engineAI answer engine: Unavailable
Works across open tabsWorks across open tabs: Unavailable
Text or image generationText or image generation: Unavailable
Choice of modelChoice of model: Unavailable
Retention or training controlsRetention or training controls: Unavailable
Voice or image inputVoice or image input: Unavailable

On a phone

3 built in · 1 not available · 6 undocumented

Undocumented is not the same as absent - it means the publisher does not state it.

Extensions on mobileExtensions on mobile: Unavailable
Can be the phone defaultCan be the phone default: Built in
Can be set as the Android default browser.
Biometric lockBiometric lock: Unknown
Biometric locking is not documented.
Offline readingOffline reading: Unknown
Offline reading is not documented.
Desktop-site modeDesktop-site mode: Unknown
Desktop-site mode is not documented.
Download managerDownload manager: Built in
A download manager with media extraction is a headline feature.
Background playbackBackground playback: Unknown
Background or picture-in-picture playback is not documented.
Web pushWeb push: Unknown
Web push support is not documented.
Data saverData saver: Built in
Data-saving modes are documented.
Address-bar placementAddress-bar placement: Unknown
Address-bar placement is not documented.

Under the hood

Rendering engine: Chromium
JavaScript engine: V8
Upstream project: Chromium
Release channel: stable
Code and licence: Proprietary
Install method: App store or direct download.
Hardware support: Historically optimised for low-specification Android hardware.

Source repository

Active. Still updated for Android, with a user base concentrated in Asian markets.

Editorial view

UC Browser is one of the most-used mobile browsers in the world and one of the least documented, and both facts belong in the same record. Its user base is concentrated in South and Southeast Asian markets, where its download manager, media extraction, and data-saving modes solved real problems on expensive, slow connections long before Western browsers took those constraints seriously.

The product

Android-first. Android availability is documented; Windows and current iOS availability are not clearly documented and are recorded as unknown rather than guessed, while macOS and Linux have no builds. It renders with Chromium and V8 under a proprietary licence with no public source repository. A built-in ad blocker, a bundled VPN feature, incognito mode, cloud sync, and translation are documented.

Why to be careful

The reason is evidential rather than rhetorical. The browser has drawn repeated public scrutiny over data handling, including removals from app stores in some markets, and the vendor publishes no telemetry position that would let a reader evaluate those concerns. This record marks telemetry as unknown because that is the honest reading. An unknown here is worse than an unknown elsewhere: for a browser with this history, the absence of a documented position is itself information. Ownership is part of the picture too: UCWeb is part of the Alibaba group, and vendor jurisdiction is a legitimate input for some readers, weighed the same way this directory weighs it elsewhere.

The genuine strengths

Narrow and real.

The download manager, including extraction of in-page media, beats what mainstream browsers ship
Data-saving modes matter on metered connections
It sets as the Android default, and everything it does is built in, since there is no extension platform

The verdict

Conditional on purpose. If its download and data tools solve a specific problem you actually have, and the material you browse is not sensitive, it does that job well. If you are choosing a general-purpose browser and have any alternative available, the combination of an undocumented telemetry position and a history of scrutiny makes other options easier to justify. Set-as-default works on Android, and the bundled feature set stands in for the extension platform the browser deliberately does not have.

Where these facts come from

Every capability above is read from a primary source and dated. 6 of 30 fields stay recorded as unknown rather than assumed.

UC Browser official site
Product scope and platform availability.
Verified Sep 2026

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