How To Fix Tachiyomi “Failed To Bypass Cloudflare” – WebView, DNS & User Agent

If you are a manga reader using Tachiyomi, you have probably run into the frustrating “Failed to Bypass Cloudflare” error at least once. It stops you right in your tracks and makes your favorite manga sources completely inaccessible. The good news is that this error is fixable — and this guide will walk you through exactly what causes it and how to solve it step by step.

What Is the “Failed to Bypass Cloudflare” Error in Tachiyomi?

This error occurs because Cloudflare, a widely used web security service, is blocking Tachiyomi from accessing manga sources. Cloudflare uses advanced bot detection mechanisms including CAPTCHAs, IP blocking, and JavaScript based verification to prevent automated scraping and DDoS attacks.

Since Tachiyomi is an app rather than a traditional browser, Cloudflare sometimes flags it as a bot and blocks its requests entirely. As of 2026, this issue continues to persist despite Tachiyomi’s ongoing improvements — mainly because Cloudflare constantly evolves its protection systems to stay ahead.

The important thing to understand here is that no single universal fix exists. Solutions tend to be source specific, meaning what works for one manga source may not work for another. However the methods below cover the most effective approaches that work across most situations.

Why Does Tachiyomi Get Blocked by Cloudflare?

Tachiyomi gets flagged by Cloudflare for a few key reasons:

It uses a generic user agent that does not resemble a real browser. It does not always handle JavaScript and cookies the same way a browser does. Its IP requests can appear suspicious or automated to Cloudflare’s detection algorithms.

Essentially what you are trying to do when fixing this error is make Tachiyomi look and behave like a legitimate browser so Cloudflare does not flag it as a bot.

Fix 1 – Customize WebView Settings in Tachiyomi to Act Like a Real Browser

The first and most important fix is adjusting Tachiyomi’s WebView settings. Since Cloudflare relies heavily on JavaScript challenges and cookie verification, you need to make sure Tachiyomi handles these properly.

Here is what you need to do:

Open Tachiyomi and go to Settings. Navigate to the Advanced section. Make sure JavaScript is enabled in the WebView settings. Ensure that cookies are enabled as well. Set the Accept-Language header to en-US — this small change helps Tachiyomi appear as a legitimate English language browser request rather than an automated script.

This method works because Cloudflare uses JavaScript challenges to verify whether the visitor is a real browser. By enabling JavaScript and cookies and setting the correct language header, Tachiyomi can pass these basic checks more effectively.

Fix 2 – Change Your DNS Server to Bypass IP Blocking

Another highly effective fix is changing your device’s DNS servers. Cloudflare sometimes blocks requests based on IP reputation, meaning certain IP addresses get flagged as suspicious or associated with bot traffic.

By switching to a cleaner DNS server you route your traffic through less flagged IP addresses which significantly reduces the chance of Cloudflare blocking your requests.

The recommended DNS servers to use are:

1.1.1.1 — Cloudflare’s own privacy focused DNS (ironically one of the best for bypassing blocks). 8.8.8.8 — Google’s public DNS server which is also widely trusted and less likely to be flagged.

You can change your DNS settings directly on your Android device through your WiFi settings or mobile network settings. Some users also prefer using a DNS changer app for easier configuration.

Fix 3 – Spoof Your User Agent to Mimic Chrome or Firefox

This is one of the most powerful fixes available. By default Tachiyomi uses a generic user agent that immediately signals to Cloudflare that the request is coming from an app rather than a real browser. Cloudflare’s detection systems are smart enough to recognize this and block the request.

The solution is to spoof your user agent — essentially changing the identifier that Tachiyomi sends with its requests so it appears to be coming from a real browser like Chrome or Firefox.

To do this:

Go to Settings in Tachiyomi. Open Advanced Settings. Look for the User Agent String option. Replace the default value with a current Chrome or Firefox user agent string.

You can find up to date user agent strings by simply searching “latest Chrome user agent string” online. Make sure you use a recent one as outdated user agents can also trigger Cloudflare’s detection systems.

For specific manga sources you can also find user agent settings within the individual extension settings which gives you more precise control over how each source handles requests.

Where to Find These Settings in Tachiyomi

All three of the fixes above can be accessed through Tachiyomi’s built in settings. Here is a quick reference:

DNS Settings — Available through your Android device network settings or a third party DNS changer app. WebView and JavaScript Settings — Found under Tachiyomi Settings then Advanced. User Agent Settings — Found under Tachiyomi Settings then Advanced then User Agent String. Also available within individual extension settings for source specific control.

Keep Tachiyomi Updated for the Latest Cloudflare Fixes

The Tachiyomi development community works continuously to improve Cloudflare bypass methods. New updates regularly include patches and improvements that help the app handle Cloudflare’s latest detection techniques more effectively.

Make sure you are always running the latest version of Tachiyomi and keep your manga source extensions updated as well. Extension updates often include source specific Cloudflare fixes that can resolve the issue without requiring any manual configuration on your end.

Important Note on Ethical Use

All of the methods described in this guide should be used responsibly and ethically. These fixes are intended purely for personal manga reading and should not be used for mass scraping, redistributing content, or any activity that violates the terms of service of manga source websites.

Respecting content creators and source websites ensures that these platforms remain available for everyone in the manga reading community.

Final Words

The Tachiyomi Failed to Bypass Cloudflare error is annoying but definitely fixable with the right approach. Start with enabling JavaScript and cookies in WebView, then switch to a reliable DNS server like 1.1.1.1 or 8.8.8.8, and finally spoof your user agent to mimic a real browser like Chrome or Firefox.

Since Cloudflare constantly updates its detection systems remember that these fixes may need occasional adjustments. Stay updated, keep your app and extensions current, and you should be able to enjoy your manga reading experience without constant interruptions.