AfterPack
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AfterPack documentation

A post-build step that obfuscates the JavaScript your bundler produces. One dev dependency, one line; production output ships unreadable, development stays untouched.

Kick off with an agentPaste into Claude Code, Codex, Cursor or Copilot

Where do you want to start?

Quickstart · Frameworks

Get AfterPack into your build

Install the plugin and ship obfuscated output from your normal build — five minutes.

Start here
Concepts · Tiers

Evaluate it for my team

How AfterPack works, the threat it answers, and what each plan ships.

Start here
Best practices · Protection Map

Protect secrets & license logic

Mark high-value code with region directives so it gets the heaviest treatment, and read the Protection Map.

Start here
Reversal classes · Threat model

See what an attacker gets

The three reversal classes, what each one costs a reader of your bundle, and where the honest limits are.

Start here

Every token, scored by how hard it is to reverse

Dim is untouched; green to red marks rising obfuscation complexity. Hover any token to see the transforms that ran and why. The preset ladder moves the whole bundle. Directives move one region.

Full Protection Map walkthrough
entitlements.jsmedium · complexity 8Open full size
entitlements.js, 54 lines, built at the medium preset with a directive around the signature check. Click any token to see what was applied to it.

Use it when

  • •The browser receives logic someone would pay to copy or bypass: a license check, pricing rules, anti-cheat, a paywall, an embedded SDK.
  • •A customer or a security questionnaire asks whether the JavaScript you ship is readable.
  • •You want a build that stays unchanged in development and fails rather than ships weaker output.

Skip it when

  • •Everything valuable already runs on the server and the client is a thin view.
  • •The code is open source or is meant to be read.
  • •You need a secret to stay secret in the browser: no obfuscator does that, and AfterPack says so.

Reference