Camoufox crashes on MacOs with `geoip: true`

[MatousMarik]

When running Camoufox locally on macOS, it crashes.

The cause is the geoip: true launch option (works just fine for other values).

const crawler = new PlaywrightCrawler({
    proxyConfiguration,
    maxRequestsPerCrawl,
    requestHandler: router,
    launchContext: {
        launcher: firefox,
        launchOptions: await camoufoxLaunchOptions({
            headless: true,
            proxy: await proxyConfiguration?.newUrl(),
            geoip: true,               <------------------------------------------ HERE
            // fonts: ['Times New Roman'] // <- custom Camoufox options
        }),
    },
});

Repro:

• https://github.com/apify/actor-templates/blob/6afe9e98f610606d137e558463788b04fa15d0d9/templates/ts-crawlee-playwright-camoufox/src/main.ts
• apify create -t ts-crawlee-playwright-camoufox

Tested with node versions 22.14.0 and 24.13.0.

[barjin]

Hello, could you please share the details/logs of the error? Thanks!

[dmkng]

I have the exact issue, the logs are very ambiguous, I was thinking for hours why even a simple www.google.com opening doesn't work, here's the minimal sample code:

import { Camoufox } from 'camoufox-js';

const browser = await Camoufox({
    geoip: true
});

const page = await browser.newPage();
await page.goto('https://www.google.com', { waitUntil: 'domcontentloaded' });

and here's the error:

page.goto: Page crashed
Call log:
  - navigating to "https://www.google.com/", waiting until "domcontentloaded"

    at /Users/user/camoufox-js-test/index.js:8:12 {
  name: 'Error'
}

Node.js v24.13.1

[barjin]

This seems related to daijro/camoufox#461, let's see how the upstream project handles this. They should be landing the fixes soon, so I'll keep this ticket open for now.

Thank you for reporting this.

[JWriter20]

Diagnosed the issue working with claude, it seems like the issue is with the actual camoufox binary. Making a pr now that includes a fix (until the binary is updated) and new fixes/features from the original camoufox github and the forked cloverlabs one.

High level Issue:

---

The Camoufox binary's docShell.overrideTimezone() (used when timezone is set in CAMOU_CONFIG) crashes the page on macOS when Intl.DateTimeFormat() is instantiated. This affects any geoip usage since it always sets a timezone.

Low level Issue:

---

The bug is on line 45 of timezone_spoofing.patch: reinterpret_cast<const char*>(uniStr.getBuffer()) — this casts UTF-16 data to const char*, which is wrong on macOS (and works on Linux only by coincidence due to different ICU behavior). The zoneID variable is expected to be UTF-16 char16_t* data, but it's being cast to char*. This causes a crash when ICU tries to parse it.

[DeVoresyah]

Diagnosed the issue working with claude, it seems like the issue is with the actual camoufox binary. Making a pr now that includes a fix (until the binary is updated) and new fixes/features from the original camoufox github and the forked cloverlabs one.

High level Issue:

The Camoufox binary's docShell.overrideTimezone() (used when timezone is set in CAMOU_CONFIG) crashes the page on macOS when Intl.DateTimeFormat() is instantiated. This affects any geoip usage since it always sets a timezone.

Low level Issue:

The bug is on line 45 of timezone_spoofing.patch: reinterpret_cast<const char*>(uniStr.getBuffer()) — this casts UTF-16 data to const char*, which is wrong on macOS (and works on Linux only by coincidence due to different ICU behavior). The zoneID variable is expected to be UTF-16 char16_t* data, but it's being cast to char*. This causes a crash when ICU tries to parse it.

PR link from the original repo?