PNG vs JPG vs WebP vs AVIF — Which Image Format to Use in 2026
Four formats cover 95% of image use online today. Pick wrong and you double your file size, lose transparency, or upload something the receiving platform rejects. This guide cuts straight to the decision points with real data — no philosophy, just "when do I use which."
We'll reference paste-to-download.com/compress when discussing conversion — browser-based, no upload, supports all four formats.
The Four Formats at a Glance
| Format | Compression | Transparency | Animation | HDR | Year mainstream |
|---|---|---|---|---|---|
| JPG | Lossy | No | No | No | 1992 |
| PNG | Lossless | Yes (alpha) | No (PNG-APNG yes but rare) | No | 1996 |
| WebP | Both | Yes | Yes | No | 2010 (Google) |
| AVIF | Both | Yes | Yes | Yes (10/12-bit) | 2019 (AOM) |
JPG and PNG were designed when 1 MB images were rare. WebP and AVIF are modern, designed with the goals of the web in mind: aggressive compression with no visible quality loss.
File Size — Real Numbers
A 1600 × 1000 pixel photo of a product (camera, neutral background, normal contrast):
| Format | File size | Vs PNG |
|---|---|---|
| PNG (lossless) | 2,140 KB | 100% |
| JPG (quality 90) | 612 KB | 29% |
| JPG (quality 80) | 318 KB | 15% |
| WebP (quality 90) | 410 KB | 19% |
| WebP (quality 80) | 184 KB | 9% |
| AVIF (quality 80) | 132 KB | 6% |
At quality 80, AVIF beats JPG by 2.4× on file size at indistinguishable quality. WebP beats JPG by 1.7×. PNG is reserved for situations where lossless is required.
For screenshots with text (less detail, more flat areas):
| Format | File size | Vs PNG |
|---|---|---|
| PNG (lossless) | 720 KB | 100% |
| Palette PNG (256 colors) | 168 KB | 23% |
| JPG (quality 90) | 380 KB | 53% |
| WebP (lossless) | 312 KB | 43% |
| WebP (quality 95) | 84 KB | 12% |
| AVIF (quality 95) | 62 KB | 9% |
For screenshots, WebP and AVIF both crush JPG. PNG only wins when you need the file to round-trip through editors without quality loss.
Browser & Platform Support in 2026
| Format | Chrome | Safari | Firefox | Email clients | CMS upload | Social |
|---|---|---|---|---|---|---|
| JPG | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ |
| PNG | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ |
| WebP | ✅ | ✅ (since 14) | ✅ | ⚠️ (Outlook 2013- fails) | ✅ (most modern) | ✅ (most) |
| AVIF | ✅ | ✅ (since 16) | ✅ | ❌ | ⚠️ (some accept, some don't) | ⚠️ (X yes, IG no) |
The practical takeaway: WebP is universally safe for web in 2026. AVIF is safe for web but still risky for email and some CMSs. JPG and PNG remain the lowest-common-denominator fallbacks.
Quality Comparison at Same File Size
If you constrain file size to 100 KB:
- JPG: visible block artifacts on text, slight banding on gradients
- WebP: smooth gradients, sharper text edges, occasional softness on fine detail
- AVIF: best preservation across the board, especially on color and gradient transitions
The gap is biggest on color-heavy images (sunsets, gradients, product photos). On grayscale or low-contrast images all three formats look similar at 100 KB.
Decision Tree — Pick the Format in 10 Seconds
For photos
- Web (general audience) → WebP quality 80
- Web (cutting edge, modern browsers only) → AVIF quality 75
- Email or fallback → JPG quality 85
- Print or archive → JPG quality 95 or PNG
For screenshots with text
- Web → WebP quality 90
- Email or fallback → PNG (or JPG quality 95)
- Storage / archive → PNG
For logos and graphics with flat colors
- Need transparency → PNG (or WebP for smaller files)
- No transparency, low color count → Palette PNG
- Will be combined with photos on web → WebP with alpha
For animation
- Modern web → WebP or AVIF (animated)
- Email / fallback → GIF (still the only universal animation format)
Edge Cases Worth Knowing
JPG and color profiles. JPG with embedded color profiles (Adobe RGB, ProPhoto) can render wildly different colors across platforms that don't honor the profile. If your image will appear on social media, convert to sRGB first.
WebP animation vs GIF. Animated WebP is typically 30% smaller than GIF at the same quality, but support is narrower. For a meme that needs to render everywhere, GIF still wins.
AVIF on iOS. Safari supports AVIF natively since iOS 16. If your audience is enterprise (older iPads on iOS 15), test before committing.
Lossless WebP vs PNG. Lossless WebP usually wins by 20-30% file size. If your tool chain supports it, use lossless WebP for screenshots and graphics.
How to Convert
Open paste-to-download.com/compress. Drop your images. The format selector at the top lets you pick the target format and quality. The tool runs in your browser tab — your images don't leave your device.
For batch conversion of a folder full of PNG screenshots to WebP, just drag the folder in, pick WebP-80, hit "Download all as zip." Done in seconds.
The Two-Line Answer
For most 2026 web use cases: WebP at quality 80. It beats JPG by ~50% in file size at indistinguishable quality, supports transparency, and works everywhere users expect images to work.
Use AVIF if you can afford to lose Outlook and a few older CMSs. Use JPG/PNG when the destination demands them. Convert in seconds at paste-to-download.com/compress.