Why resize to 1920px before compressing?

Most screens are 1920px wide or less. Larger dimensions just waste file size. Resizing to 1920px before compression reduces file size by 50-70% with no visible quality loss on screens.

What does 'longest side' mean?

For landscape photos (wider than tall), the longest side is width. For portrait photos (taller than wide), it's height. Resizing by longest side maintains aspect ratio automatically.

Will 1920px work for print?

No. For print, use 300 DPI and keep original dimensions. 1920px is optimized for digital/web use only.

Resize by Longest Side (e.g., 1920px for web)

Short answer: In /compress, set resize to longest side (e.g. 1920), then compress—keeps aspect ratio and makes KB targets much easier.

Last reviewed: April 2026.

Open /compress
Choose Resize = Longest side, set value (e.g., 1920).
Compress with desired quality or target size.

Downscaling before compression saves size dramatically with minimal perceived loss.

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