JPG vs PNG: Which Format Should You Use?
A deep comparison of JPG and PNG image formats — file size, quality, transparency, and when to use each. Includes a quick decision table.
PixConvert Team
JPG vs PNG: The Complete Comparison
JPG and PNG are the two most widely used image formats on the web. Both are universally supported, but they solve fundamentally different problems. Picking the wrong one costs you either unnecessary file size or visible quality loss. This guide breaks down exactly when to use each.
What Is JPG?
JPG (also written JPEG — Joint Photographic Experts Group) is a lossy compression format created in 1992, specifically designed for photographs and photorealistic images. When you save a JPG, the encoder discards image data that the human eye is least likely to notice — fine color transitions, subtle texture detail — to achieve a dramatically smaller file.
Key characteristics:
- Lossy compression — some quality is permanently discarded on save
- Supports 16.7 million colors (24-bit color depth)
- No transparency support (alpha channel)
- Excellent for photographs and gradients
- Near-universal compatibility — every browser, OS, email client, and printer supports JPG
- Smaller file sizes than PNG for the same photographic content
A 6 MB RAW photo exported as JPG at 80% quality typically weighs 500–900 KB. The same image as PNG would be 8–15 MB. That 10–20x size difference matters enormously for web performance.
What Is PNG?
PNG (Portable Network Graphics) is a lossless compression format released in 1996 as a patent-free replacement for GIF. Every pixel is preserved exactly — no matter how many times you save the file, quality never degrades.
Key characteristics:
- Lossless compression — zero quality loss
- Full alpha transparency (transparent backgrounds, partial opacity)
- Best for graphics, logos, screenshots, and images with text
- Larger file sizes than JPG for photographic content
- Universal browser and OS support
- Two variants: PNG-8 (256 colors, like GIF) and PNG-24 (16.7M colors with transparency)
A screenshot of a browser window saved as PNG might be 400 KB. The same screenshot saved as JPG at 85% quality would be around 150 KB — but JPG would add visible compression artifacts around the text and sharp edges, making it harder to read.
File Size Comparison
For photographic content, JPG almost always wins on file size:
| Content Type | JPG (80% quality) | PNG (lossless) |
|---|---|---|
| Landscape photo (2000x1333px) | ~350 KB | ~4.2 MB |
| Portrait photo (1080x1350px) | ~200 KB | ~2.8 MB |
| Product on white background | ~120 KB | ~600 KB |
| Screenshot with text | ~180 KB | ~280 KB |
| Logo with transparency | N/A | ~45 KB |
The screenshot row is instructive: PNG is only 1.5x larger for screenshots, while JPG artifacts make text look noticeably worse. For photos, the gap is 10–12x.
Quality: Artifacts vs Lossless
JPG introduces compression artifacts — blocky distortions most visible around sharp edges, high-contrast transitions, and text. At high quality settings (85–95%), these artifacts are invisible in photos. At lower settings (50–70%), they become obvious, especially when zoomed in.
PNG has no quality degradation whatsoever. A logo saved as PNG at 1000px will look pixel-perfect at 1000px. A text overlay screenshot saved as PNG stays perfectly sharp.
The practical rule: if your image contains sharp edges, text, or flat color areas, JPG artifacts will be visible. Use PNG. If your image is a photo with smooth color transitions, JPG artifacts are imperceptible.
Transparency
This is a hard technical difference — PNG supports transparency, JPG does not.
If you need a logo on a colored background, a product image with the background removed, or a UI element that overlays other content, you need PNG (or WebP). Saving a transparent image as JPG fills the transparent areas with white or black depending on the software.
If you have a JPG and need transparency, the workflow is: convert JPG to PNG first, then edit in your design tool to add transparency.
Browser and Device Support
Both formats enjoy essentially 100% support across all modern and legacy browsers, operating systems, email clients, and mobile devices. This is not a differentiating factor in 2026.
Quick Decision Table
| Scenario | Use JPG | Use PNG |
|---|---|---|
| Photograph for a website | Yes | |
| Logo or icon | Yes | |
| Screenshot with text | Yes | |
| Social media photo | Yes | |
| Email attachment (photo) | Yes | |
| Image with transparent background | Yes | |
| Product photo on solid white | Yes | |
| Design asset or source file | Yes | |
| Text overlay on image | Yes | |
| Banner ad with graphics + photo | Yes |
When JPG Wins
- Photographs of any kind — nature, portraits, food, travel, architecture
- Web images where loading speed matters
- Email attachments — smaller files mean faster sends and less inbox storage
- Social media uploads — most platforms re-compress anyway, so starting smaller is fine
- Any image where transparency is not needed and the content is photographic
When PNG Wins
- Logos and brand assets — sharp edges must stay sharp
- Screenshots — especially anything with UI text or code
- Transparency required — product cutouts, overlays, watermarks
- Design work and exports from tools like Figma or Illustrator
- Images containing text — PNG keeps text legible at any zoom level
- Source files you'll edit repeatedly — lossless means no generational quality loss
The Format Conversion Workflow
A common workflow: you receive product photos as JPG, but the e-commerce platform needs a transparent-background version. Steps:
- Convert the JPG to PNG using PixConvert
- Open the PNG in your editor and remove the background
- Export the final version as PNG to preserve transparency
Going the other direction — you have PNG screenshots you want to email without huge file sizes:
- Convert PNG to JPG with PixConvert at 85% quality
- The file size drops 50–70% with no visible quality difference for photographic areas
Summary
JPG is the default for photos. It produces dramatically smaller files with no perceptible quality loss for photographic content. PNG is the default for everything else — graphics, logos, screenshots, and anything requiring transparency or pixel-perfect sharpness.
When in doubt: does it have transparency or text? Use PNG. Is it a photograph? Use JPG. Need to switch? Use PixConvert's JPG to PNG converter or PNG to JPG converter — free, instant, and your files never leave your device.