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Privacy Policy

Last updated: June 2026

Who we are

PixelPatrol is developed by Helmholtz Imaging at the Max-Delbrueck-Centrum fuer Molekulare Medizin in der Helmholtz-Gemeinschaft (MDC), Berlin. Contact: ella.bahry@mdc-berlin.de

Your data in the viewer

PixelPatrol processes your data files entirely in your browser. Nothing you load into the viewer is uploaded to any server - your files never leave your device.

Sharing PixelPatrol results

A PixelPatrol table is a parquet file that contains metadata extracted from your images - including all fields your processing pipeline recorded. Anyone you share the table file with will have access to all of that information:

  • The base directory (the local filesystem path you processed) is stored in the parquet's project metadata by default. Use --omit-base-dir to exclude it when sharing.
  • File and folder paths. The name, path, and parent columns store your file and folder names (relative to the base directory), plus each file's modification date. If your files or folders are named after patients, samples, or people, that information is in the table.
  • Loader-extracted image metadata. Whichever loader you used (e.g. bioio or tifffile) contributes its own set of columns - dimensions, pixel size, channel names, and more. Some formats can embed arbitrary free-text fields (e.g. notes, operator or sample IDs) - check the columns if unsure.
  • Thumbnails of your images. If the thumbnail processor ran (it does by default), the table contains a small copy of every image.
  • Derived statistics (intensity, histograms, quality/compression metrics) describe your images numerically.

If your dataset contains sensitive information - such as patient data, proprietary annotations, or details that should not be made public - treat the table file with the same care as the original data.

GitHub Pages

This website is hosted on GitHub Pages (GitHub, Inc., a Microsoft subsidiary). GitHub automatically collects server logs including your IP address when you visit. We have no control over this data. See GitHub's privacy statement for details.

Feedback form

The feedback form on this website and in the viewer is powered by Formspree (Formspree, Inc.). When you submit feedback, your name, email address, and message are transmitted to Formspree and forwarded to our email inbox. We use this data only to respond to your feedback and do not share it further. Submission is entirely voluntary. See Formspree's privacy policy for details.

To request deletion of feedback you submitted, contact us at ella.bahry@mdc-berlin.de.