JPG vs PNG: Which Format Should You Use and When?

JPG and PNG are the two formats you'll encounter most often. Both are universally supported, both have been around for decades, and both are still the right choice — depending entirely on what you're doing. Picking the wrong one doesn't break anything, but it can mean a file that's ten times larger than it needs to be, or a logo with ugly compression artifacts on its edges.

Quick answer

• Use JPEG for photos, web images, and anything where file size matters
• Use PNG for logos, screenshots, graphics with text, and anything needing transparency

Technical differences

The fundamental difference is in how each format handles compression. JPEG uses lossy compression — it permanently discards image data to achieve smaller files. The result is 70–90% smaller than raw, with 8-bit color (16.7 million colors), but no transparency support and visible artifacts at low quality settings.

PNG uses lossless compression — every pixel is stored exactly as it was captured. You get 24-bit color plus an 8-bit alpha channel for full transparency, with no quality loss no matter how many times you save. The trade-off is larger file sizes, especially for photographs.

Format comparison

When to use JPEG

JPEG is the right choice whenever you're working with photographic content:

• Photographs — portraits, landscapes, food, product shots
• Social media photos — platforms re-compress uploads anyway, so JPEG's efficient encoding saves you bandwidth with no meaningful quality difference
• Email attachments — smaller files load faster and stay under attachment limits
• Hero images and blog photos on websites
• Any image where 100% pixel-perfect accuracy isn't required

A typical 12 MP smartphone photo saved as JPEG at quality 80 is usually 300–600 KB. The same image as PNG can easily exceed 8 MB. For a photo that will never be edited again, that extra size is wasted.

When to use PNG

PNG wins wherever sharp edges, transparency, or pixel accuracy matter:

• Logos and icons — flat color areas stay crisp; JPEG would introduce blocky artifacts on edges
• Screenshots — fine text stays readable; JPEG blurs it
• Images with text overlay
• Transparent backgrounds — product shots you want to place on any background, UI elements, overlays
• Diagrams, charts, and infographics
• Files you'll edit and re-save multiple times — PNG never accumulates quality loss the way JPEG does

File size reality check

Typical sizes for a 1920×1080 image:

WebP delivers 25–35% smaller files than an equivalent JPEG for the same perceived quality. For modern web projects, WebP is the recommended default.

Converting between formats

JPEG to PNG — safe to do, creates a lossless copy. The resulting PNG will be pixel-perfect going forward, but it will not recover any quality that was already lost when the JPEG was first saved.

PNG to JPEG — loses any transparency (replaced with white or the background color), gains a much smaller file size. Good choice when you need to share a PNG photo and file size matters.

Either to WebP — recommended for web use. WebP supports both lossy and lossless compression as well as transparency, matching or beating both JPEG and PNG.

Convert directly in your browser — no uploads, no signup, no quality loss beyond what you choose:

• JPG to PNG — convert JPEG photos to lossless PNG
• PNG to JPG — shrink PNG files for sharing or web use
• Image Compressor — compress JPEG or PNG without visible quality loss

The bottom line

If you're unsure, ask yourself two questions: Does the image need transparency? Is it a photograph or a graphic? Photographs without transparency belong in JPEG. Everything with transparency, sharp edges, or text belongs in PNG. And if you're building for the web in 2026, consider converting everything to WebP — you'll get the best of both worlds.