Image Formats Compared — PNG vs JPEG vs WebP vs AVIF
Updated 2026-08-11
A practical comparison of PNG, JPEG, WebP, AVIF, GIF, BMP, SVG, ICO, and TIFF — when to use each, size vs quality tradeoffs, and browser support.
Image formats at a glance
Every image format is a compromise between file size, quality, transparency, animation, and compatibility. Here is the quick verdict for the formats SuperPixMia supports.
- PNG — lossless, transparency, sharp edges; heavier for photos
- JPEG — lossy, photographic, no transparency; small and universal
- WebP — modern hybrid, transparency + small size; great browser support
- AVIF — newest codec, smallest size, good support in modern browsers
- GIF — 8-bit, animation, dithering; use WebP/APNG for better quality
- SVG — vector, scales infinitely, tiny for logos & icons
- ICO — the Windows/website favicon format
- BMP — uncompressed, huge; for legacy/Windows assets
- TIFF — lossless, print & photography workflows, not for web
WebP vs PNG vs JPEG: the modern decision
For the web in 2026, WebP is the safe default: it supports transparency like PNG and compresses photos nearly as well as the newest codecs, with support in every major browser since 2020. JPEG remains the most universal lossy format for photos. PNG stays for pixel-exact work. AVIF gives the smallest files but check your audience's browsers first.
Compression and quality trade-offs
Lossy formats (JPEG, WebP, AVIF) trade visible detail for smaller files — the lower the quality setting, the smaller the file and the softer the image. Lossless formats (PNG, TIFF) keep every pixel but hit a size floor. AVIF offers the best quality-per-byte, then WebP, then JPEG. A quality slider of 75–85 usually looks near-original on JPEG, while WebP can often go to 70–80 with the same look.
Transparency and animation
PNG, WebP, GIF, and AVIF support transparency; JPEG, BMP, and TIFF do not. For animation, GIF works everywhere but is limited to 256 colors. WebP animation and APNG offer much better quality with smaller files, at the cost of slightly less universal support.
When to pick each format — cheat sheet
Logo or icon → SVG (vector) or PNG. Website photo → WebP (with JPEG fallback). Social share image → PNG or JPEG at 1200×630. Favicon → ICO. Screenshot for UI review → PNG. Print-ready image → TIFF or PNG. Simple transparent graphic → WebP or PNG. Everything else → WebP.
Frequently Asked Questions
Which image format is best for the web?
WebP is the best all-rounder for the web in 2026: transparent, small, and supported by every modern browser. Use AVIF when you need the absolute smallest files, and JPEG as a universal fallback for photos.
Is WebP supported everywhere?
Yes — every major browser (Chrome, Edge, Firefox, Safari, and WeChat/UC/QQ on mobile) has supported WebP since 2020. For very old or unusual clients, serve a JPEG or PNG fallback.
How do I convert between formats without losing quality?
Always convert from the original source file, never from an already-compressed JPEG. SuperPixMia converts locally in your browser between all 9 formats — no upload, no quality loss beyond the target format's own settings.
What is the difference between PNG-8 and PNG-24?
PNG-8 stores up to 256 colors (good for flat graphics, very small), while PNG-24 stores truecolor with millions of colors (needed for photos and gradients). PNG-32 adds a full alpha channel for smooth transparency.
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