JPG vs PNG: When to Use Each (With Examples)

“JPG for photos, PNG for graphics” is the advice everyone repeats, and it’s mostly right. But the edge cases are where people waste megabytes or wreck image quality. Here’s the full decision framework with concrete examples.

How they differ, technically

JPG uses lossy compression tuned for continuous-tone images — photographs. It stores 24-bit color (16.7M colors) but no transparency, and every save discards some detail.

PNG uses lossless compression — every pixel is preserved exactly. It supports full transparency (alpha channel) and is ideal for sharp edges, flat colors, and text. The price: much larger files for photographic content.

The file-size reality

Same image, different formats (typical 12 MP photo):

• JPG quality 85: ~1.2 MB — looks perfect
• PNG: ~9 MB — looks identical, 7× larger

Same logo (simple graphic with flat colors):

• PNG: ~45 KB — crisp edges, transparency intact
• JPG quality 85: ~120 KB — larger and worse: fuzzy halos around every edge, no transparency

This is the whole story in two examples: each format is excellent at what it’s designed for and terrible at the other job.

When to use JPG

• Photographs of any kind — portraits, landscapes, product shots, event photos
• Any continuous-tone image without sharp text or line art
• When file size matters more than pixel perfection — web content, email attachments, social posts

Concrete: a blog post hero image, a real-estate listing photo, a restaurant menu photo. All JPG (or better, WebP).

When to use PNG

• Logos and icons — especially anything needing transparency
• Screenshots — text and UI elements stay razor-sharp
• Images with text overlays — infographics, diagrams, charts
• Line art and illustrations with flat colors
• When you need a lossless master before further editing

Concrete: your site logo, an app screenshot for documentation, a chart from a presentation. All PNG.

The tricky middle cases

A photo with a text overlay (e.g., a meme, a quoted testimonial on a background photo). JPG will fuzz the text edges. Options: export as PNG (large but crisp), or use WebP which handles this mixed content better than either.

A product photo on white for an online store. JPG is fine — the white background compresses to almost nothing and there are no sharp edges that matter. Save the bytes.

A screenshot of a photo (e.g., screenshotting an Instagram post). PNG preserves it exactly but the file is huge for photographic content. If it’s for the web, convert the screenshot to JPG/WebP at quality 85 — the photo content dominates, and nobody will see the difference.

An illustration with gradients (digital painting, gradient mesh logo). PNG files balloon on gradients; JPG banding may show. WebP or AVIF handles both better — this is exactly the case modern formats were built for.

What about WebP?

In 2026, the honest answer to “JPG vs PNG” is often “neither — use WebP.” WebP does lossy (like JPG, but ~30% smaller), lossless (like PNG, but smaller), and transparency (like PNG). For web delivery it beats both formats at their own game. Keep JPG/PNG as source and interchange formats; serve WebP. Our converter and WebP optimizer handle the transition in the browser.

The full comparison lives in WebP vs AVIF vs JPG.

Quick decision cheat sheet

One more: if your graphic is vector (logo, icon, diagram), SVG beats every raster format — infinitely scalable, tiny files. Use SVG for vector content, PNG/WebP only when you must rasterize.

PNG-8 vs PNG-24: the setting everyone ignores

When exporting PNGs, most tools offer two flavors, and the choice matters enormously:

• PNG-24 (truecolor): 16.7 million colors + full transparency. The default, and the reason PNGs get huge.
• PNG-8 (indexed): 256 colors, like a GIF with better compression and alpha transparency. For logos, icons, and simple UI graphics, PNG-8 is often 60–80% smaller than PNG-24 with zero visible difference — because a flat logo doesn’t have 16 million colors in it.

Always try PNG-8 first for graphics. If you see banding in gradients, then step up to PNG-24. Most “PNG files are huge” complaints are really “someone exported a two-color logo as PNG-24” complaints.

Converting in bulk

Format transitions usually happen in batches — a folder of screenshots to convert, a photo library to shrink. Two rules:

1. Convert from the best source. PNG→JPG from the original PNG, never from a JPG someone already made. Each lossy generation compounds.
2. Keep the originals. Disk is cheap; re-shoots aren’t. Convert into a new folder (/web/ alongside /originals/) so you can always re-export at different settings.

Our converter and compressor both handle batches in the browser — drop a folder’s worth of images, pick settings once, download everything as a ZIP.

Practical next steps

• Photos too heavy? Compress them — pick quality visually with the live preview.
• Need PNGs as JPGs for upload forms that reject transparency? Convert PNG to JPG in the browser.
• Building for the web? Optimize to WebP and serve modern formats with JPG fallback.