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Vacuum Image Optimizer1.0.1
1.0.11 min read

Compression Settings

Tune quality, profiles, WebP, AVIF, resizing limits, Safe Mode, and delivery options.

Compression settings control how Vacuum transforms supported source images.

Profiles

ProfileDefault qualityUse case
Lossless95High visual fidelity and review-sensitive sites.
Balanced82Recommended default for most sites.
Aggressive75Stronger savings with more visible compression risk.
Ultra65Smallest files, best tested on non-critical media.

Core settings

  • Enable or disable WebP optimization.
  • Enable AVIF when supported by the server.
  • Set AVIF quality separately from WebP quality.
  • Choose upload automation mode.
  • Enable frontend delivery and preferred modern format.
  • Keep Safe Mode enabled for conservative behavior.

Resizing limits

The plugin exposes maximum width and height settings. Use 0 to avoid resizing. Do not introduce resizing on production media until you have reviewed the effect on theme layouts, product images, and high-resolution assets.

Saving settings

Settings are sanitized through WordPress Settings API storage under vacimg_settings.

Related articles

WebPGenerate WebP derivatives for JPEG and PNG sources and optimize supported WebP uploads.AVIFEnable optional AVIF generation when Imagick or GD can read and write AVIF images.Safe ModeUse conservative defaults that reduce risk during first-run and production optimization.