How to Reduce Image File Size for Email or Upload Limits

Find out why the file is big

The most common culprit is a photo saved as PNG. PNG is lossless, so photos stored that way are several times larger than the same image as JPG. Screenshot tools and some editing apps save PNG by default.

The second is JPG saved at 100% quality. 100% and 80–90% look nearly identical, but the file size difference is large.

Method 1: switch format

PNG photo → JPG: usually the biggest win. Transparent areas are filled with white.

JPG → WebP: typically 25–35% smaller at similar quality — check the destination accepts WebP.

JPG → AVIF: often smaller still, though some apps and sites don't accept it yet.

BMP or TIFF → JPG: these are barely compressed, so shrinking them dramatically is common.

Method 2: lower quality

Under “Options”, choose JPG/WebP/AVIF quality from 50, 70, 80, 90, 92 or 100%. 80% is a good balance; try 70% if it's still too big; 50% suits thumbnails and previews.

After changing quality, click the format button again to re-convert with the new setting, and repeat until the file fits.

Step by step

1) Drop images into anyview.dev or tap “Choose files”. 2) Pick a quality in “Options”. 3) Click JPG, WEBP or AVIF — the file converts and downloads immediately. For several files use “Download all (ZIP)”. Everything runs in your browser; nothing is uploaded.

Limits and alternatives

AnyView changes format and quality only — it doesn't resize pixel dimensions. If you must hit a very small target (say under 200 KB) with a high-megapixel photo, lowering quality may not be enough; combine it with your phone's or computer's resize feature.

Need to send many images as one attachment? Combining them with “PDF” keeps them together, but won't make them smaller.