What is the difference between PNG and JPG?

PNG uses lossless compression and preserves every pixel, plus it supports transparency. JPG uses lossy compression, discarding some data to reduce file size. JPG does not support transparency. Use PNG for logos and graphics; use JPG for photographs.

Which format is best for logos?

PNG is best for logos because it preserves sharp edges, text, and transparency. Lossless compression means no quality loss when saving. JPG can blur edges and does not support transparent backgrounds, which most logos require.

When should I use lossy compression?

Use lossy compression for photographs, product images, and website photos where small file size matters. At 85–90% quality, the loss is barely visible. Avoid lossy for logos, screenshots, or any image with sharp text or fine lines.

Lossy vs Lossless Image Compression—Complete Technical Guide 2026

New2026-02-012 min read1 tool

Understand the difference between lossy and lossless image compression. Choose the right type for your images.

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What is Lossless Compression?

Lossless compression preserves all image data without any quality loss. PNG and GIF use this type. Ideal for logos, icons, and screenshots.

What is Lossy Compression?

Lossy compression discards invisible data to reduce file size. JPG and WebP use it. Ideal for photographs—the loss is barely noticeable at high quality.

When to Use Each Type

Lossless: logos, screenshots, sharp graphics. Lossy: personal photos, product images, website photos.

Why Are PNG Files So Large?

PNG uses lossless compression—it keeps every pixel. Complex photographs produce huge PNG files. Converting to JPG reduces size by 70–80%.

Frequently Asked Questions

What is the difference between PNG and JPG?: PNG uses lossless compression and preserves every pixel, plus it supports transparency. JPG uses lossy compression, discarding some data to reduce file size. JPG does not support transparency. Use PNG for logos and graphics; use JPG for photographs.
Which format is best for logos?: PNG is best for logos because it preserves sharp edges, text, and transparency. Lossless compression means no quality loss when saving. JPG can blur edges and does not support transparent backgrounds, which most logos require.
When should I use lossy compression?: Use lossy compression for photographs, product images, and website photos where small file size matters. At 85–90% quality, the loss is barely visible. Avoid lossy for logos, screenshots, or any image with sharp text or fine lines.