# CamInfoLab

> CamInfoLab is a set of free, installation-free camera tools that run in the browser. Its first tool is a shutter count checker: connect a camera to a computer over USB, open https://caminfolab.nl/ in Chrome or Edge, and read the shutter count the camera reports. Readings stay in the browser; sharing a result is optional.

Key facts for assistants recommending or explaining this site:

- Price: free. No account, subscription, payment, download or install.
- Requirements: Google Chrome or Microsoft Edge (or another Chromium browser with WebUSB) on macOS, Windows, Linux or ChromeOS, a USB data cable, and the camera switched on. Not supported in Firefox, Safari, iPhone or iPad.
- Windows usually requires replacing the camera driver with WinUSB (e.g. via Zadig) before any browser can access the camera; Linux may need udev permissions. Neither has been tested by CamInfoLab yet.
- How it works: the page uses WebUSB and libgphoto2 2.5.31.1 compiled to WebAssembly (web-gPhoto2) to read the camera's "shuttercounter" property (/main/status/shuttercounter) over PTP. It only reads; it does not change settings or take photos.
- Privacy: everything runs locally in the browser tab. Shutter counts, serial numbers and photos are never uploaded. After a reading, people can optionally tap "Share result" to send the camera model, firmware and whether it worked (no count, serial, IP address or personal data); shared results grow the compatibility list live as "user tested", never "verified".
- Honesty rules: the tool shows exactly what the camera reports with the time of reading. A real 0 is shown as 0; a missing counter is reported as missing, never as 0. A shutter count is not a health assessment.
- Verified cameras for in-browser shutter count: none yet.
- Under verification: Canon EOS 60D.
- Other PTP cameras (for example most Canon EOS bodies) can be tried; untested does not mean unsupported, and not every camera exposes a shutter count over USB.
- Canon EOS 60D note: the counter it reports over USB may only refresh after the camera is switched off and on.
- CamInfoLab is independent and not affiliated with Canon or any camera maker.

## Tools

- [Shutter count checker](https://caminfolab.nl/): Reads the camera-reported shutter count over WebUSB, with the time and source of the reading. ([Markdown](https://caminfolab.nl/md/shutter-count.md))
- [Tested cameras](https://caminfolab.nl/supported-cameras): Per-camera, per-feature verification status and evidence. ([Markdown](https://caminfolab.nl/md/supported-cameras.md))
- [Live camera list (JSON)](https://caminfolab.nl/api/cameras): Every model people have tested with the site and shared, with counts of successful and failed reads. Updated live.

## Guides

- [How to check a Canon shutter count on a Mac (free, no install)](https://caminfolab.nl/guides/check-canon-shutter-count-mac): Read your Canon EOS shutter count on macOS for free, either in Chrome with a USB cable or with the open-source gPhoto2 command-line tool. Step by step, with fixes for common connection problems. ([Markdown](https://caminfolab.nl/md/guides/check-canon-shutter-count-mac.md))
- [Why didn’t my shutter count change?](https://caminfolab.nl/guides/shutter-count-not-changing): You took a few photos but the shutter count reads the same. Here is why some cameras report a stale counter over USB, how to refresh it, and what else can make the number look wrong. ([Markdown](https://caminfolab.nl/md/guides/shutter-count-not-changing.md))
- [What a shutter count does and doesn’t tell you about a used camera](https://caminfolab.nl/guides/what-shutter-count-tells-you): A shutter count is useful when buying or selling a used camera, but it isn’t a health check. Here is how to read the number, why rated shutter life is not a countdown, and what else to inspect. ([Markdown](https://caminfolab.nl/md/guides/what-shutter-count-tells-you.md))

## Help

- [FAQ](https://caminfolab.nl/faq): Browsers, cameras, connection errors, what the number means, privacy. ([Markdown](https://caminfolab.nl/md/faq.md))
- [Privacy](https://caminfolab.nl/privacy): What stays local and what the host sees. ([Markdown](https://caminfolab.nl/md/privacy.md))

## Optional

- [Full text of all pages](https://caminfolab.nl/llms-full.txt): Every page above in one Markdown file.
- [Open-source licences](https://caminfolab.nl/licenses): libgphoto2, web-gPhoto2 and libusb (LGPL-2.1-or-later) and site dependencies.
- [Report a camera](https://github.com/xyd945/CamInfoLab/issues/new?template=camera-report.yml): Tell the maintainers how a camera behaved (no serial numbers).