PNG vs JPG vs WEBP — Which Format Should You Use?
Choosing the wrong format costs you file size or quality — sometimes both. PNG, JPG, and WEBP each have a clear job. This guide cuts through the confusion.
Quick answer
- PNG — logos, icons, screenshots, text, transparency, pixel art. Lossless, larger files.
- JPG — photographs, product images, natural scenes. Smaller files, minor quality loss.
- WEBP — web images where file size matters and you control the HTML. Better than both for most web use. Not universal in older software.
PNG — when and why
PNG uses lossless compression. Every pixel is preserved exactly. No quality is lost on save.
Use PNG when: images have text, logos, or sharp edges (JPG blurs these); you need transparency; you'll re-edit and re-save the file; you're working with pixel art or flat-color graphics.
Don't use PNG for: photographs on a website — a photo as PNG is 3–10× larger than equivalent JPG.
JPG — when and why
JPG uses lossy compression — it discards information the human eye struggles to detect, achieving much smaller files for photographic content.
Use JPG when: the image is a photograph or natural scene; file size matters and transparency isn't needed; it's a final deliverable (not going to be re-edited).
| Quality setting | Use case | Artifacts |
|---|---|---|
| 90–100 | Archive, print | None |
| 75–90 | Web photos (standard) | Imperceptible |
| 60–75 | Thumbnails | Visible at 100% zoom |
| Below 60 | Aggressive compression only | Obvious blocking |
Never save logos, screenshots, or pixel art as JPG. The compression creates ringing artifacts around high-contrast edges that are impossible to remove.
WEBP — when and why
WEBP achieves 25–35% smaller than JPG at equivalent visual quality, and 20–30% smaller than PNG for lossless images. It also supports transparency and animation.
Use WEBP when: building a website you control; you need the smallest file without visible loss; you want transparency with better compression than PNG.
Don't use WEBP when: files need to open in older software; you're sharing by email to unknown recipients; you need reliable EXIF metadata.
The <picture> pattern: serve WEBP to modern browsers, JPG as fallback — zero quality difference, smaller downloads for 96% of users:<picture><source srcset="img.webp" type="image/webp"><img src="img.jpg" alt=""></picture>
Side-by-side comparison
| Feature | PNG | JPG | WEBP |
|---|---|---|---|
| Compression | Lossless | Lossy | Both modes |
| Transparency | Yes (full alpha) | No | Yes (full alpha) |
| Animation | APNG (rare) | No | Yes |
| Photos (size) | No Large | Yes Small | YesYes Smallest |
| Text/logos | Yes Sharp | No Artifacts | Yes Sharp |
| Browser support | Universal | Universal | 96%+ |
| Software support | Universal | Universal | Good, not universal |
| Re-save quality | No loss | Degrades | Degrades (lossy) |
Decision guide
- Need transparency? → PNG or WEBP. Never JPG.
- Photograph or natural scene? → WEBP (web), JPG (max compatibility).
- Text, logos, or sharp edges? → PNG.
- Will you re-edit it? → PNG for working file, export JPG/WEBP for delivery.
- Website you control? → WEBP with JPG fallback for photos, PNG for graphics.
- Email or max compatibility? → JPG for photos, PNG for graphics.
Related: How to Upscale Images Without Losing Quality · How to Reduce GIF File Size
Ready to convert? Use the free image format converter to switch between PNG, JPG, and WEBP right in your browser.
The decision, scenario by scenario
| You are exporting… | Use | Why |
|---|---|---|
| A photo for a web page | WebP q75–85 (JPG fallback) | smallest bytes at equal appearance |
| A screenshot with text / a chart | PNG or lossless WebP | lossless keeps text edges crisp — and it’s smaller here too |
| A logo or any transparency | PNG or WebP | JPG has no alpha channel at all |
| A file someone will edit again | PNG | stay lossless until the final export |
| A photo for a print lab | JPG q90–95, sRGB | universal print-pipeline compatibility |
| Maximum-compatibility sharing (forms, old software) | JPG | the one format nothing rejects |
To put numbers behind the screenshot row: we exported a 1,200×750 flat-colour dashboard mock-up and got 7.4 KB as PNG against 37.9 KB as JPG q85 — the JPG is five times larger and smears the text. Flip the content to a detailed photograph and the ranking inverts just as hard. Format choice is content choice.
What actually happens to transparency in JPG
People expect an error; instead they get silent flattening. We saved an 800×800 logo with a transparent background both ways: 5.9 KB as a transparent PNG, 22.6 KB as a JPG — which quietly gained a solid white box where the transparency used to be, permanently. If a cutout ever needs to sit on anything that isn’t white, the alpha channel is non-negotiable: PNG for maximum compatibility, WebP when you also want it small.
Rule of thumb to end all charts: made by a camera → lossy (JPG/WebP). Made by a computer → lossless (PNG/lossless WebP). Needs transparency or re-editing → never JPG. That sentence resolves ~95% of real decisions; the converter handles the remaining mechanics in your browser.