PNG vs WebP: Which Image Format Should You Use?

Choosing between PNG and WebP is one of the most common image decisions on the web — and the right answer depends on what the image is for. This guide compares both formats with real numbers so you can decide in seconds.

Quick answer

• Converting for a website or app? → WebP. It is 25–35% smaller at the same visual quality, and every modern browser supports it.
• Editing later or need pixel-perfect quality? → PNG. It is lossless and universally accepted by editors and design tools.
• Sending to someone with old software? → PNG (or JPG). Old desktop apps (pre-2020) may not open WebP.

Side-by-side comparison

Feature	PNG	WebP
Compression	Lossless (large files)	Lossy or lossless (small files)
Typical size for a 1000×667 photo	~1.2 MB	~0.3–0.4 MB at q85
Transparency (alpha)	✅ Yes	✅ Yes
Animation	❌ No (use APNG)	✅ Yes
Browser support	Universal	All modern browsers
Opens in old editors	✅ Yes	⚠️ Sometimes not

For photos, WebP at quality 85–90 looks identical to the PNG on screen while being roughly a third of the size. For flat graphics (logos, screenshots with sharp edges), the gap narrows but WebP still wins.

When PNG is still the right choice

1. Working files. If you will crop, retouch or re-export the image later, keep the PNG. Every WebP re-export at quality <100 loses a little detail.
2. Screenshots with tiny text. Lossy compression can blur 1-pixel text. PNG keeps it razor sharp.
3. Maximum compatibility. Some scanners, printers and legacy software only accept PNG/JPG.

When WebP clearly wins

1. Website speed and SEO. Google's Core Web Vitals reward smaller files. Converting your PNGs to WebP is one of the cheapest performance wins available — often cutting total page weight by 20–30%.
2. Image-heavy pages. Galleries, e-commerce listings and portfolios: hundreds of images × 60% smaller each adds up fast.
3. Storage. Photo libraries shrink dramatically without visible loss.

How to convert (free and private)

The safest way is a tool that runs in your browser — your images never leave your device:

• PNG → WebP: use our PNG to WebP Converter — batch supported, with a ZIP download and a size-saved counter.
• WebP → PNG/JPG: use the WebP to JPG Converter or the JPG / PNG / WebP Converter for any direction.
• Just smaller, same format: the Image Compressor handles that.

Quality settings that work

• Quality 90 — visually identical, the safe default for most images.
• Quality 80–85 — maximum savings for photos where slight softness is acceptable.
• Quality 100 / lossless — when every pixel matters; the file stays smaller than PNG anyway thanks to WebP's better lossless codec.

Common misconceptions

• "WebP loses transparency" — false. WebP supports full alpha transparency, including semi-transparent shadows.
• "WebP is not supported anymore" — the opposite: it is now served by the majority of websites and supported everywhere that matters.
• "Converting makes quality worse every time" — only if you re-export repeatedly at low quality. Always convert from the original.

Bottom line

Keep PNG as your archival/working format, ship WebP to the web. A simple workflow: store PNGs, convert to WebP at quality 90 when publishing — you keep quality, cut bandwidth, and your pages load measurably faster.