Gradle Sync Failed: Isolate JDK, Plugin, Repository and Network Causes
“Gradle sync failed” means Android Studio could not complete the build-model import. The last line is rarely the root cause. Find the first actionable.
Code quality
Android Build Analyzer
Lint your Gradle build setup and surface configuration issues that slow down or break builds.
Android Build Analyzer is part of APKLint, an online toolkit for inspecting Android APK files. Lint your Gradle build setup and surface configuration issues that slow down or break builds. Paste your build.gradle or libs.versions.toml in your browser to view the relevant details; results reflect what you paste.
Nothing is stored. What you submit is processed on our servers over an encrypted connection for this request only — it isn’t written to file or object storage, and never shared. No account required.
About Android Build Analyzer
Lint your Gradle build setup and surface configuration issues that slow down or break builds.
Android Build Analyzer is part of APKLint’s code quality toolkit — Static analysis for Kotlin, Java, and your Gradle build. It’s free to use and needs no account.
Your privacy is the default: what you submit is processed on our servers over an encrypted connection for that request only — it isn’t written to file or object storage, and never shared.
What Android Build Analyzer checks
- Repository and plugin configuration issues
- Deprecated or risky Gradle settings (e.g. jcenter())
- Android block configuration smells
- Dependency declaration style
Good to know: Reviews build configuration patterns; it doesn't execute Gradle or resolve your dependency graph.
When to use Android Build Analyzer
- Best for
- Surfacing Gradle build-configuration issues that slow down or break builds, from a pasted build script.
- Not the right tool for
- Not a dependency inventory or vulnerability check; the two Gradle dependency tools cover those.
- What you get back
- Build-setup findings: configuration smells and patterns that commonly cause slow or failing builds.
- How it differs from related APKLint tools
- It targets the build configuration itself, while the other Gradle tools target the dependencies it declares.
- Limitations
- Static reading of the script; it cannot run your build or measure real build times.
How to use Android Build Analyzer
- Paste your Gradle file — Paste your build.gradle or build.gradle.kts.
- Send for analysis — APKLint checks it on our servers over an encrypted connection.
- Review the findings — Work through each result with a short explanation of why it matters.
- Nothing is stored — Your pasted text is processed for this request only — it isn't written to file or object storage, logged for analytics, or shared.
Why use APKLint
Always free
Every tool is free with no login and no paywall. Reasonable file and input limits keep the free service stable.
No on-page ad banners
A clean, focused interface with no third-party ad banners cluttering your results.
Privacy-first
What you submit is processed for the request only — it isn't written to file or object storage, and never shared.
How it runs
A pure-Python Gradle and dependency parser.
No sign-up
Start immediately — no account, login, or email required.
Works anywhere
Runs in any modern browser, on desktop or mobile.
Frequently asked questions
What does Android Build Analyzer do?
Lint your Gradle build setup and surface configuration issues that slow down or break builds.
What does it look at?
Your build.gradle setup — repositories, plugins, and Android config — for common configuration issues.
Is it free to use?
Yes. Every tool on APKLint is completely free, with no sign-up and no account.
How is my data handled?
What you submit is sent to our backend over an encrypted connection only to produce your result. It isn't written to file storage, used for analytics, or shared.
What should I paste in?
Paste your build.gradle or build.gradle.kts.
Related tools
All product names, logos, and trademarks are property of their respective owners. APKLint is an independent toolset and is not affiliated with, endorsed by, or sponsored by Google, Android, or any other party.