PNG vs JPG: Which Image Format Should You Use in 2026?

PNG and JPG are the two most common image formats on the web, and the choice between them matters more than most people realize. The wrong choice can double your storage costs, blur your screenshots, or make your photos look like they were faxed. Here's a practical breakdown of when to use each.

The one-sentence answer

Use JPG for photographs. Use PNG for screenshots, logos, UI mockups, and anything with sharp edges or transparency. That's it — 90% of the time, that rule gets it right.

Why the rule works: lossy vs lossless

JPG is lossy. It discards visual information the human eye is less sensitive to — fine color variation in smooth areas — to achieve file sizes 5 to 20 times smaller than PNG. On a photograph of a face, you literally cannot see the lost data at quality 85+.

PNG is lossless. Every pixel is preserved exactly. On a photo this is wasteful (you're paying 10x the bytes for detail you can't see). On a screenshot of text, a logo, or a diagram, it's essential — lossy compression turns sharp edges into a muddy halo of JPEG artifacts.

A concrete example

Take a 1920×1080 photo of a landscape:

As PNG: ~4–6 MB
As JPG at quality 90: ~400–600 KB

Now take a screenshot of a spreadsheet at the same dimensions:

As PNG: ~150 KB (fewer unique colors compress well)
As JPG at quality 90: ~400 KB, with visible fringing around every letter

PNG wins on both size and quality for the screenshot. JPG wins by 10x on size for the photo.

When to pick PNG

Screenshots — especially of text, UI, or terminals
Logos and icons — typically contain flat areas and sharp edges
Any image requiring transparency — JPG does not support an alpha channel
Images you'll edit repeatedly — every JPG re-save loses more data; PNG doesn't degrade
Text on images — charts, memes, marketing graphics with overlaid text

When to pick JPG

Photographs, period — portraits, landscapes, food, products
Images for the web where file size matters (hero images, galleries)
Email attachments when your PNG is over a few megabytes
Anywhere you don't need transparency and the source is photographic

The transparency deal-breaker

JPG does not support transparency. If you have a logo with a transparent background and you save it as JPG, the transparent areas become solid white. Every time. There's no quality setting that fixes this — it's a hard limitation of the JPG format.

If you need a small file and transparency, your choices are PNG (lossless, larger) or WebP (lossy, small, near-universal browser support).

Converting between formats

Both directions are a click away in the browser:

PNG to JPG — good for shrinking screenshots that are actually photos, or when you need universal compatibility without transparency
JPG to PNG — useful for editing workflows (avoiding further lossy re-saves) and adding alpha channels later

Both tools process files entirely in your browser. Nothing is uploaded.

One gotcha: converting JPG to PNG doesn't restore quality

A common mistake: taking a low-quality JPG, converting it to PNG, and assuming it's now "high quality." Not how it works. PNG preserves whatever data it's given — if the JPG was already blurry with compression artifacts, the PNG is an exact copy of the blurry, artifact-ridden image. PNG-izing a JPG doesn't bring back lost detail; it just freezes the current state at a larger file size.

What about WebP, AVIF, HEIC?

These modern formats outperform JPG on size-to-quality ratio by 20–50%. If your audience is on up-to-date browsers and you have the tooling to generate them, use them. For broad compatibility — email, legacy systems, Microsoft Word documents — JPG and PNG remain the safe defaults. See our guide to the best image formats for the web for a format-by-format rundown.