New method added in Chrome 661 that works for a production build on unrooted devices.

  1. Using adb, write the flags to /data/local/tmp/chrome-command-line.

    For example:

    ~$ adb shell 'echo --unsafely-treat-insecure-origin-as-secure=http://a.test > /data/local/tmp/chrome-command-line'
    
  2. In chrome://flags, turn on enable-command-line-on-non-rooted-devices.

  3. Force stop Chrome (the relaunch now button will not trigger the reading of the flags file, even though the danger snackbar will disagree).

Verify in chrome://version that this worked.

https://www.chromium.org/developers/how-tos/run-chromium-with-flags#TOC-Android

Answer from Josh Lee on Stack Overflow
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Android Authority
androidauthority.com › home › computing › chromebooks/chromeos › here are 12 chrome flags that will improve your web-browsing experience
The 12 best Chrome Flags and how to enable them - Android Authority
September 19, 2025 - Open the Chrome Flags page and search for “Auto Dark Mode for Web Contents.” Then, using the drop-down menu next to it, enable the feature. Waiting for large files to download can be a hassle.
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Google Support
support.google.com › chrome › answer › 16552482
Learn about Chrome flags - Google Chrome Help
Chrome flags aren’t settings, and you can’t use them to permanently change how Chrome works.
People also ask

How to Open Google Chrome Flags?
You can open Chrome flags by simply typing chrome://flags in the address bar (URL bar) of the Google Chrome browser both on desktop and mobile. From here you can enable, disable, or manage currently enabled flags.
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beebom.com
beebom.com › google-chrome-flags
15 Google Chrome Flags You Should Use in 2024 | Beebom
Do Chrome Flags work on all devices?

You can use Chrome Flags on both mobile and desktop browsers, but not all Chrome Flags are available on every device. Some are desktop or mobile-specific. However, Chrome will separate unavailable Flags and put them into the Unavailable tab.

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androidauthority.com
androidauthority.com › home › computing › chromebooks/chromeos › here are 12 chrome flags that will improve your web-browsing experience
The 12 best Chrome Flags and how to enable them - Android Authority
Is it safe to use Chrome Flags?

Using Chrome Flags is safe, but it can make your experience a bit buggy. The team also warns that you could lose data and compromise privacy. This is just Google being careful, though. The worst that can usually happen is that you’ll need to relaunch Chrome and turn off the Chrome Flags, if anything goes wrong.

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androidauthority.com
androidauthority.com › home › computing › chromebooks/chromeos › here are 12 chrome flags that will improve your web-browsing experience
The 12 best Chrome Flags and how to enable them - Android Authority
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Google
aboutchromebooks.com › chrome-flags-download-bubble
How to Disable or Restore the Chrome Download Bubble Using chrome://flags/#download-bubble
August 28, 2025 - Downloads are managed through system notifications and the Chrome download manager. The chrome://flags/#download-bubble flag does not exist on Android.
Top answer
1 of 4
7

New method added in Chrome 661 that works for a production build on unrooted devices.

  1. Using adb, write the flags to /data/local/tmp/chrome-command-line.

    For example:

    ~$ adb shell 'echo --unsafely-treat-insecure-origin-as-secure=http://a.test > /data/local/tmp/chrome-command-line'
    
  2. In chrome://flags, turn on enable-command-line-on-non-rooted-devices.

  3. Force stop Chrome (the relaunch now button will not trigger the reading of the flags file, even though the danger snackbar will disagree).

Verify in chrome://version that this worked.

https://www.chromium.org/developers/how-tos/run-chromium-with-flags#TOC-Android

2 of 4
2

What you're doing is correct, but seems like you're writing the switches to the wrong file for Chrome (and note that the file that you write the switches to may vary based on the OS version [or maybe phone?] ).

I tried this on two different phones, and had to write to two different files! Hopefully one of them will work for you:

Phone 1: Nexus 6 with Android 6.0.1

Simply do the following in adb shell:

echo "chrome --sync-url" > /data/local/tmp/chrome-command-line'

Phone 2: MotoG with Android 4.4.4

This is a bit trickier. It turned out that Chrome actually reads the switches from /data/local/chrome-command-line (not in the tmp subdirectory!). Now the issue is that on an unrooted phone you won't have permission to write to this file! So I had to root my phone* and use su to write to the file:

  1. adb shell
  2. su
  3. echo "chrome --sync-url" > /data/local/chrome-command-line

*Rooting an Android phone is actually very easy and takes only a few minutes. There are a number of one click apps for rooting your phone (e.g. KingoRoot). For the case of MotoG, I had to do a few more steps to root, following this)

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Google
aboutchromebooks.com › chrome-flags-settings-android
How To Use And Enable Chrome //flags Settings
September 1, 2025 - This will disable all modified Flags and reset Chrome to its original state. There are numerous Flags available, but here are three useful ones for Android users. This setting divides large downloads into smaller parts and merges them upon completion, making downloads faster.
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How-To Geek
howtogeek.com › home › android › 10 useful flags to enable in chrome for android
10 Useful Flags to Enable in Chrome for Android
May 4, 2023 - Once enabled, the flag ensures your scrolls are as smooth as possible; you won't see any jittery movement while scrolling your web pages. By enabling "Parallel Downloading," you allow Chrome to split your file download into multiple parts, resulting in accelerated download speeds.
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Beebom
beebom.com › google-chrome-flags
15 Google Chrome Flags You Should Use in 2024 | Beebom
October 15, 2025 - Just enable this flag and you should see an improvement in downloading speeds especially when downloading multiple files at once. As the name suggests, this Chrome flag helps improve the scrolling experience on your mobile and desktop. It reduces the janks and jitters that you may witness while scrolling. The feature works on both Android and desktop operating systems including Windows, Linux, and Chrome OS as well.
Find elsewhere
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Google
aboutchromebooks.com › chrome-flags-parallel-downloading
How to Enable Chrome //Flags Parallel Downloading for Faster File Downloads
October 25, 2025 - Yes, the parallel downloading flag functions on Chrome for Android and Chrome OS devices.
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MakeUseOf
makeuseof.com › home › android › the 9 best chrome flags you should enable on android
The 9 Best Chrome Flags You Should Enable on Android
November 29, 2022 - Multiple connections to download a file also reduce the demand on servers, which speeds up downloads in Chrome. Once downloaded, Chrome automatically merges these small packets into the entire download file. Flag URL: chrome:flags#enable-accessibility-page-zoom
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YouTube
youtube.com › watch
How to Enable Parallel Downloads in Google Chrome for Android? - YouTube
We can download some files in Chrome much faster if we first enable a hidden option called Parallel Downloading.~~~~~Hi! Don't forget to like the video, subs...
Published   March 19, 2024
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Croma
croma.com › home › what google chrome flags are, and how to enable them to transform your browsing experience
What flags on Chrome are and how they work | Croma Ubboxed
Here's what flags on Google Chrome are and how to enable them on your device to change your browsing experience. Read more on Croma Unboxed.
Top answer
1 of 2
1503

I want to use parallel downloading

2 of 2
551

Dear Pooja Bhagchandani,

Thank you for reaching out to the Microsoft Community.

While I understand your interest in enabling the Parallel Download feature in Google Chrome to improve your downloading experience, it’s important to note that Google Chrome is a third-party application. As such, Microsoft does not directly manage or provide fixes for Chrome-specific features.

That said, I can guide you on how to enable the Parallel Download feature in Chrome and direct you to the appropriate resources for additional support.

How to Enable Parallel Downloading in Chrome

Parallel Downloading is an experimental feature in Chrome that can speed up downloads by creating multiple connections to download files simultaneously. To enable it:

  • Open Google Chrome.
  • Type chrome://flags in the address bar and press Enter.
  • In the search bar at the top, type Parallel Downloading.
  • When the Parallel Downloading option appears, click the dropdown menu next to it and select Enabled.
  • Click Relaunch to restart Chrome and apply the changes.

Based on my testing on Chrome V131.0.6778.205, this feature is enabled properly in the labs.

For detailed support and to address specific issues, I recommend visiting the Google Chrome Help Community or reaching out to Chrome's support team:

Google Chrome Help Community: Ask a Question - Google Chrome Community

Disclaimer: Microsoft provides no assurances and/or warranties, implied or otherwise, and is not responsible for the information you receive from the third-party linked sites, or any support related to technology.

The dedicated team and community members there will be better equipped to help you troubleshoot and provide specific advice regarding Chrome features.

If you have any other questions or concerns, feel free to reach out.

Best Regards,

Martin | Microsoft Community Support Specialist

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Chromium
chromium.org › developers › how-tos › run-chromium-with-flags
Run Chromium with command-line switches
To set the flags without having ... method for setting command-line switches with ContentShell that doesn't require building yourself: Download a LKGR build of Android. This will include both ChromePublic......
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Google Support
support.google.com › chrome › thread › 205483450 › parallel-download-enable
Parallel download enable - Google Chrome Community
Skip to main content · Google Chrome Help · Sign in · Google Help · Help Center · Community · Google Chrome · Terms of Service · Submit feedback · Send feedback on
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Guiding Tech
guidingtech.com › home › 10 best chrome flags for your android device
10 Best Chrome Flags for Your Android Device
March 6, 2024 - Here are the ten best flags you can use to tweak Google Chrome on your Android device. Enabling the Parallel Downloading flag will help if Chrome struggles to download large files. Parallel downloading splits the files into smaller segments and uses multiple streams to download them onto your ...
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Tom's Guide
tomsguide.com › computing › internet › browsers
How to set Chrome flags | Tom's Guide
July 10, 2024 - Chrome Flags are available on Windows, macOS, Android and iOS, making them accessible across various platforms. However, it's crucial to understand that these features are experimental and come with risks. Enabling certain flags may cause browser instability or even break Chrome entirely.
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Geekflare
geekflare.com › windows › 14 settings on google chrome flags page to make it faster
14 Settings on Google Chrome Flags Page To Make It Faster
January 20, 2025 - Like Firefox Reader View, Chrome also has a reader mode, which makes reading online articles easier. When you use this feature on a page, it will only show the main content and images and strip away everything else, including side panel content and ads. After enabling the flag, you will see a new Page icon in the address bar to click to turn on reader mode. ... This flag can speed up your download speed up to 4x.
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Popular Science
popsci.com › diy › tech hacks › 10 google chrome flags you need to turn on right now
10 Google Chrome flags you need to turn on right now
September 2, 2023 - There are several apps out there with their own live caption capabilities, but for everything else you play on Chrome, you can use the ​​#enable-accessibility-live-caption flag. This setting will generate captions for media playing on Google’s browser, even if the website you’re visiting doesn’t support them. This feature is only available in the desktop version of Google Chrome, which means you cannot use it on your mobile device. Luckily, if you have an Android phone, you won’t have to worry about that because these gadgets have a built-in live caption feature you can use.
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Studytonight
studytonight.com › post › top-10-chrome-flags-to-use
[2023 Update] Top 10 Chrome Flags You Should Enable Right Now on Android - Studytonight
May 5, 2023 - The download manager software downloads faster by creating multiple connections, well this flag does the same thing and allows Chrome to create multiple connections to the download source so that the download is speeded up.