PixelSpec

Changelog

Image sizes change, and a reference is only useful if it keeps up. Here is what has changed and when.

July 2, 2026

  • Launched PixelSpec with 33 platform specs across 16 networks.
  • Verified every size against current platform guidance.
  • Added the in-browser resizer, size reducer, aspect ratio calculator and YouTube thumbnail downloader.
  • Published the free JSON API and the embeddable resizer widget.

Found a size that has changed? Please tell us so we can verify and update it.