JPEG vs PNG: A Complete Comparison
JPEG and PNG are often confused, but choosing the right one matters for file size and quality.
JPEG (also saved as .jpg) is designed for photographs. It compresses by removing details the human eye barely notices, resulting in files 5–10× smaller than PNG for photos.
PNG preserves every pixel exactly, making it lossless. This is essential for graphics, but wasteful for photos.
Key takeaway Use JPEG for photos, PNG for graphics. Converting between them won't improve quality — converting JPG to PNG just creates a larger file without restoring lost detail.
JPEG and PNG are often treated as interchangeable, but they solve opposite problems. JPEG minimizes bytes for photos; PNG maximizes fidelity for graphics. SUHADIMG offers both conversion directions because we see users hit quality and size walls daily.
Technical note .jpeg and .jpg are identical extensions for the same ISO/IEC 10918 format. Our tools accept both. When exporting from Lightroom or Photoshop, "JPEG" and "Quality 80" map directly to what our compress and convert tools target.
When JPEG fails visually Screenshots with small text, UI mockups, and flat-color infographics show banding and fuzzy edges in JPEG even at high quality. PNG or WebP lossless preserves sharp edges. If your JPEG of a UI looks muddy, the format—not the export quality—is usually the culprit.
When PNG fails practically Uploading a 12 MP camera PNG to WordPress without optimization often hits hosting limits. The fix is not "switch to PNG for quality" but resize-to-display-size, then JPG or WebP. We document this pattern across our blog because it prevents the most common support tickets.