WebP: Great default; lossy or lossless; supports alpha.
AVIF: Modern, excellent compression; support depends on server build.
Quality: 1-100 (higher = bigger file, better fidelity). For PNG, it maps to zlib compression (0-9) internally.
Lossless: Works with WebP/AVIF/PNG; ignored for JPEG.
Metadata: Removed to save bytes and protect privacy (EXIF, GPS, etc.).
Color space: Converted to sRGB for consistent web display.
Size limit: Max upload 30 MB; large files take longer to process.
Edge cases & notes
AVIF/WebP availability depends on your ImageMagick/codec build; if unsupported, try WebP or PNG.
"Saved %"" is based on byte comparison of input vs output files.
If you see an error after submitting, check Imagick installation and server logs.
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