PNG vs JPG vs WebP: Which Image Format Should You Use?
Three image formats, dozens of opinions, hundreds of confused blog posts. The truth is way simpler than the internet makes it sound. Here’s what actually matters when picking between PNG, JPG, and WebP — and a one-line rule that works for 95% of decisions.
The one-line rule
Photos: JPG. Graphics with sharp edges or transparency: PNG. Web images where you control the destination: WebP.
That’s most of it. The rest of this guide is why.
What each format is actually doing
The three formats aren’t competing in the same race. They’re using different compression strategies optimized for different kinds of images.
JPG (JPEG) uses lossy compression — it throws away some information to make files smaller, hiding the loss in places your eye won’t notice (subtle color gradients, fine noise, areas of similar color). The math is tuned for photographs, where this kind of degradation is invisible. The same math destroys images that have sharp edges and flat color areas — like text screenshots or logos — leaving visible “compression artifacts” around the edges.
PNG uses lossless compression — every pixel is preserved exactly. Files are bigger as a result. PNG also supports transparency (so logos with no background look right when placed over different backgrounds) and shines on images with large flat color areas, sharp edges, and limited color palettes. It’s bad for photographs — a PNG of a photo is typically 3–5× the size of the equivalent JPG with no visible quality benefit.
WebP does both. It has a lossy mode that competes with JPG and a lossless mode that competes with PNG, and at default settings it’s about 25–35% smaller than JPG and 25% smaller than PNG. It supports transparency, animation (replaces GIF too), and color profiles. The catch: not every program supports it. Browsers all do now. Photoshop didn’t until 2022. Many email clients still don’t.
When to use JPG
- Any photograph that’s not destined for further editing
- Screenshots of large rendered content (web pages, dashboards) where the loss is invisible
- Anything going on social media (most platforms convert to JPG anyway)
- When you need universal compatibility and small files, in roughly that order
JPG files at quality 0.85 are visually indistinguishable from the original photo for almost everyone. Quality 0.7 is the lower bound where loss starts to be detectable on close inspection.
If you have a PNG of a photo (common output from screenshot tools), convert it with our PNG to JPG converter. A 4 MB photo PNG typically becomes a 400 KB JPG at no visible quality loss.
When to use PNG
- Logos, icons, illustrations with flat color areas
- Screenshots of text (where JPG artifacts make letters fuzzy)
- Any image needing transparency (PNG supports alpha channel; JPG doesn’t)
- Charts, diagrams, UI mockups
- Anything that will be edited further (PNG is lossless, so re-saving doesn’t degrade it)
A logo as JPG often looks crispy/dirty around the edges. The same logo as PNG looks perfect. The same logo as a transparent PNG can sit cleanly over any background. JPG simply can’t do that.
If you have a JPG of a logo, you can convert it to PNG with our JPG to PNG tool — but be aware that converting a JPG to PNG doesn’t recover lost quality, it just stops further degradation. Better to get the original PNG source if you can.
When to use WebP
- Hosting images on your own website that you serve to browsers
- Reducing storage costs (smaller files)
- Anywhere you control both the producer and the consumer of the image
- Replacing animated GIFs with smaller, smoother animations
Browsers have supported WebP universally since around 2020. If your image is going on a website you control, WebP saves bandwidth and loads faster. Smaller files also help SEO ranking via page load times.
The catch is anywhere the destination isn’t a modern browser. Specifically:
- Older email clients — Outlook 2016 and earlier don’t render WebP inline.
- Many printing services (photo prints, business cards) don’t accept WebP uploads.
- Some social media — depends on the platform; safe bet is to convert to JPG before uploading.
- Older Photoshop versions (pre-2022) need a plugin.
For most “general use” purposes — emailing a photo, uploading to a form, sending to a non-technical recipient — WebP is risky. Stick with JPG or PNG unless you’re sure the destination supports it.
If you receive a WebP file and need it in a more compatible format, use WebP to JPG (for photos) or WebP to PNG (for graphics).
How to think about file sizes
Rough numbers for a 1920×1080 image:
| Image type | JPG | PNG | WebP |
|---|---|---|---|
| Photograph | ~400 KB | ~2.5 MB | ~280 KB |
| Logo / flat graphic | ~80 KB (with artifacts) | ~50 KB | ~35 KB |
| Screenshot of text | ~200 KB (fuzzy) | ~120 KB | ~90 KB |
| Solid color background | ~30 KB | ~2 KB | ~1.5 KB |
PNG wins on graphics, JPG wins on photos, WebP wins everywhere — but only counts if the destination supports it.
Should I just compress everything to WebP?
For a personal website or web app you control: yes, basically. For email attachments, social media, sending to non-tech-savvy recipients: no, convert to JPG. The compatibility ceiling on WebP isn’t going to bite you until it does, and then you’re explaining over text message why your sister can’t see the photos you sent.
A reasonable workflow if you’re trying to optimize storage:
- Keep your originals (RAW, full-quality JPG, or PSD) somewhere
- Convert working copies to WebP for any “live” hosting (your blog, your portfolio)
- Convert specific files to JPG on demand when sharing
This way you have both — the smaller WebP for systems that handle it, and the universally-readable JPG for sharing moments.
What about other formats — HEIC, AVIF, GIF, BMP, TIFF?
- HEIC is Apple’s iPhone format. Better than JPG at the same size, worse than WebP. Universally incompatible outside Apple. Convert to JPG when sharing outside iPhone.
- AVIF is newer than WebP, even smaller files, but support is still patchy in 2026. Wait another year before adopting widely.
- GIF is obsolete for static images. Use for short animations only — or better, convert to animated WebP.
- BMP is uncompressed and enormous. No reason to use it ever.
- TIFF is a professional format used in printing and high-end photography. Way bigger than JPG, useful when lossless quality matters (archival, prepress).
Converting between formats
We have direct converters for every common pairing:
- JPG to PNG — adds transparency capability, larger files
- PNG to JPG — much smaller, loses transparency
- JPG to WebP — smaller and better quality at same size
- PNG to WebP — smaller, keeps transparency
- WebP to JPG — wider compatibility
- WebP to PNG — keeps transparency, wider compatibility
All run in your browser. Drop the file in, get the converted version back.
If you also want to make the file smaller without changing format, use the Image Compressor. Often a 4 MB JPG compresses to 400 KB at quality 0.85 with no visible difference — and that’s a bigger win than changing formats.
TL;DR
Photo → JPG. Logo/graphic/screenshot of text → PNG. Your own website → WebP. Convert between them as needed using the tools above.
Don’t agonize over the choice. None of these is wrong for general use — they’re just optimized for different things. Pick what matches your use case and move on.