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jarpeek

Online JAR viewer and Java decompiler that runs entirely in your browser with no file uploads

Community votes
0
DR by Ahrefs
0 no change since last check

Ahrefs Domain Rating benchmarked 2 Nov 2026, rebuilt 1 Nov 2026.

A browser-based Java decompiler and bytecode viewer that processes JAR, WAR, and CLASS files locally without uploading them to a server.

What it is

Screenshot of the jarpeek homepage
jarpeek.com, as visitors see it

jarpeek is a pure-frontend Java decompiler and bytecode viewer that runs entirely in your browser. It allows you to open JAR, WAR, and standalone CLASS files to inspect decompiled source code, JVM bytecode, constant pools, class structure, and hex data. All file parsing and decompilation happen locally on your device with no file uploads or server processing.

The tool supports deep bytecode analysis, letting you switch between decompiled Java source, JVM bytecode instructions, class structure information, fields, methods, attributes, and a section-aware hex view. It can also load remote JAR files directly from URLs when the server supports cross-origin requests.

jarpeek is designed for multiple workflows including code audits and security reviews, debugging and diagnosis of third-party libraries, learning and research into Java implementation patterns, and plugin and mod development. It requires no Java installation, account registration, or desktop software—only a modern browser with JavaScript support.

What it is built with

  • Inspect decompiled Java source code locally
  • View JVM bytecode instructions, operands, and labels
  • Explore class structure, fields, methods, and constant pool
  • Section-aware hex view of class file bytes
  • Support for JAR, WAR, and standalone CLASS files
  • Search and filter files and classes by name
  • Load remote JAR files from URLs with CORS support
  • Preview and export text and image resources
  • Web Workers for responsive decompilation
  • Safety limits for archive processing: 512 MiB input, 100,000 entries, 2 GiB expanded content

Pricing

Pricing model: Free

jarpeek metrics

Benchmarks for jarpeek.com: Ahrefs Domain Rating and Majestic link data, with the change since the last build.
MetricValue
Domain Rating0 no change since last check
Trust Flow0 no change since last check
Citation Flow26 no change since last check
Referring domains18 no change since last check
External backlinks69 no change since last check

Ahrefs Domain Rating benchmarked 2 Nov 2026, rebuilt 1 Nov 2026. Majestic benchmarked 1 Nov 2026, rebuilt 1 Nov 2026. Link data built by Majestic. Trust Flow, Citation Flow and Topical Trust Flow are trademarks of Majestic-12 Ltd.

jarpeek domain build sheet

Open the build sheet
Public RDAP record, last read 2 Nov 2026, 20:56 UTC.
Domain age2 months
Registered
Expires
RegistrarSpaceship, Inc.
DNSSECNot signed

Inspect jarpeek.com's registration

jarpeek after-launch build log

Since jarpeek launched on Maker Launches on 1 November 2026, these are the figures we have tracked.

Domain Rating (Ahrefs)
0
First measured 1 Nov 2026
Referring domains (Majestic)
18
First measured 1 Nov 2026

Day 0 since launch. Next receipt: day 30, 1 Dec 2026. We show what changed, not what caused it: many things affect these numbers. Nothing here is estimated.

Biggest gains on Maker Launches

Questions from the bench

Are files uploaded to a server?
No. File parsing and decompilation happen locally in your browser, and file contents are not uploaded to a server.
Which file formats are supported?
You can open .jar, .war, and standalone .class files. Resources such as manifests, properties, text, and common images can also be inspected inside an archive.
Can I open a JAR from a URL?
Yes. Enter a direct JAR URL. The remote server must allow cross-origin browser requests (CORS); otherwise, download the file and open it locally.
What can I inspect in a Java class?
You can switch between decompiled Java source, JVM bytecode, class structure, fields, methods, attributes, the constant pool, and a section-aware hex view.
Do I need Java, an account, or an installation?
No. The viewer runs in a modern browser without a local JDK/JRE, registration, or desktop installation.

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More on this profile

jarpeek has a free listing. The owner can unlock the full profile with a paid launch for $5:

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  • Milestones (locked)
  • Demo video (locked)
  • Dofollow website link (locked)

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