How Should Print and Web Images Be Compressed Differently?
A web image should be small and good enough; a print image needs enough pixels and accurate colour. The two ask almost opposite things of compression, and one file trying to serve both usually serves neither well.
The core difference
| Aspect | Web | |
|---|---|---|
| What matters | File size, load speed | Total pixels, colour accuracy |
| Size | Shrink to display size | Keep original pixels |
| Preset | Balanced (JPEG quality 75) | High quality (JPEG quality 90) |
| Format | WebP or JPEG; AVIF where supported | JPEG or PNG — ask what the printer accepts |
| Photo info | Removing it is fine | Usually irrelevant, but keep the colour profile |
Print sharpness depends on pixels divided by print size. A 6000×4000 photo prints comfortably at A4; shrink it to 1920px wide first and the print looks soft. The web is the reverse: the browser only uses as many pixels as the display area, and the rest just slows loading.
Resizing is irreversible; quality is not
Pick the wrong quality preset and you can simply recompress the original. Start from an already-shrunk file and the lost pixels are gone. So always produce the print version from the original, with size set to "Keep original size".
Settings for the web version
- Preset: Balanced. To save more, try Smart auto, which finds the lowest quality for each image that still keeps at least 95% similarity.
- Size: longest edge 1920px for full-width banners, 1280px for in-article images, 800px for thumbnails. Only shrinks; smaller images are left as they are.
- Format: converting everything to WebP is broadly compatible now; AVIF is smaller but older devices may not open it.
- Photo info: leave the default (not kept), which strips GPS location and similar data.
Settings for the print version
- Preset: High quality. For photos, JPEG quality 90 rarely shows artifacts at print size.
- Size: keep original size.
- Format: keep the original, or convert all to JPEG/PNG as the printer requests. Avoid WebP and AVIF — many prepress tools do not accept them.
- With original format and size kept, if a lossy result would be less than 5% smaller than the original, the tool hands back the original instead, so you do not pay a generation of loss for almost nothing.
One set of assets, two uses
- Leave the original folder untouched as the master.
- Drag the folder in, process with the web settings, download the ZIP, and name it web.
- Switch to the print settings and click "Recompress all with current settings" — no need to drop the files in again — then download a second ZIP named print.
- Send each version to its own destination; never send the web version to a printer.
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