JPG vs PNG vs WebP: Which Image Format Should You Use?

If you have ever stared at the save menu wondering whether to pick JPG, PNG, or WebP, you are not alone. For most websites in 2026, WebP is a safe default: it is smaller than JPG and PNG at similar quality, and it handles transparency too. Pick JPG for a photo that has to open absolutely anywhere, and PNG when you need every pixel exact, or transparency in a format even an old tool understands.

Key takeaways

• WebP is usually the smallest file at comparable quality — Google reports lossy WebP files about 25–34% smaller than JPG, and lossless WebP about 26% smaller than PNG.
• JPG is best for photographs when maximum compatibility matters, but it has no transparency and loses quality every time you re-save it.
• PNG is best for logos, screenshots and graphics with sharp text, and for transparency, but its files are much larger for photographs.
• WebP supports both lossy and lossless compression plus transparency, making it the most versatile of the three for the modern web.
• For print and archiving, keep the original — none of these three is a substitute for a lossless master file such as TIFF or a camera RAW file.

JPG vs PNG vs WebP at a glance

What each format actually does

JPG: the photograph standard

JPG (usually written JPEG, from the Joint Photographic Experts Group) was designed in the early 1990s for photographs. It uses lossy compression: it deliberately throws away detail the human eye is least likely to notice, which is why a 5 MB camera photo can become a 500 KB JPG that still looks good. The trade-off is real — every time you open, edit and re-save a JPG, it is compressed again and quality drops a little more. JPG also has no transparency, so a JPG logo always sits on a solid background colour.

PNG: the pixel-perfect format

PNG (Portable Network Graphics) uses lossless compression, meaning every pixel is preserved exactly. That makes it ideal for logos, icons, diagrams and screenshots, where JPG’s compression creates visible smudging around sharp edges and text. PNG also supports full transparency, which is why website logos and overlays are so often PNGs. The price is file size: a detailed photograph saved as a PNG can be several times larger than the same image as a JPG or WebP, which slows page loading and eats mobile data.

WebP: the modern all-rounder

WebP, developed by Google and first released in 2010, was built to do the jobs of both JPG and PNG in a single format. It offers lossy compression for photographs, lossless compression for graphics, transparency, and even animation. According to Google’s own WebP documentation, lossy WebP images are typically 25–34% smaller than comparable JPG files, and lossless WebP files are about 26% smaller than comparable PNG files. That is not a marginal gain: on an image-heavy page, switching to WebP can cut total image weight by a quarter or more, which directly improves loading speed — one of the factors Google uses in ranking and in its Core Web Vitals measurements.

JPG vs PNG vs WebP: which should you use?

For a website or blog: WebP first, JPG as fallback

If you run a website, start with WebP for photos, product pictures, and illustrations. Chrome, Edge, Firefox, and Safari 14 and later all support it, which covers most visitors in the US and UK in 2026. Still have a lot of visitors on very old browsers? Serve them JPG or PNG instead. WordPress, image CDNs, and the HTML picture element make that fallback easy, and it is the approach most performance guides recommend.

For photographs you share or email: JPG

When a photo will be opened in email clients, messaging apps, older software or printed at a photo kiosk, JPG remains the safest choice. It is the one format you can assume will open anywhere, and its small file size makes it easy to attach and share. Export at quality 80–90 for a good balance: below 70, artefacts start to show in skies and skin tones; above 95, the file grows rapidly for almost no visible gain.

For logos, icons and screenshots: PNG (or lossless WebP)

Sharp edges punish lossy compression. A logo saved as a JPG will show halos and smudging around its edges, while the same logo as a PNG stays crisp. PNG is still the default here, especially if the file will be handed to a designer or dropped into a document. If the logo lives only on your website, lossless WebP gives you the same crispness in a smaller file — the only reason to stick with PNG is compatibility with an older tool in your workflow.

For images with transparency: PNG or WebP, never JPG

JPG simply cannot do transparency, so any image that needs a see-through background must be PNG or WebP. PNG is the conservative choice for files you share with others; WebP is the better choice for files that only ever appear on your own site, because the same transparent graphic will usually be noticeably smaller.

For social media uploads: follow the platform, not the format war

Social platforms re-compress everything you upload anyway, so the format you send matters less than the quality you send. Upload the highest-quality JPG or PNG you have and let the platform do its own conversion — uploading an already heavily compressed WebP and letting it be compressed again is the one combination that reliably produces muddy results.

File-size comparison: the same photo in three formats

The table below shows typical results for a detailed 1600-pixel-wide photograph exported at settings most editors would call “high quality.” Your numbers will vary with the image — busy landscapes compress less well than simple portraits — but the ranking almost never changes.

The pattern is the whole story in one table: PNG is the outlier for photographs, and WebP beats JPG by roughly a third. On a page with ten such photos, choosing WebP over JPG saves more than a megabyte — the difference between a page that feels instant and one that feels sluggish on a mobile connection.

Common mistakes when choosing an image format

• Saving photographs as PNG. This is the single most common cause of bloated web pages. Unless the photo needs transparency, a PNG photograph is almost always a mistake.
• Re-saving a JPG many times. Each save re-compresses the image. Always keep an original and export fresh JPGs from it, rather than editing the JPG itself.
• Using JPG for a logo or text graphic. The smudging around letters and edges is visible even at high quality settings, and it looks unprofessional.
• Ignoring the fallback. If part of your audience uses older browsers or older apps, serve a JPG/PNG fallback alongside WebP rather than assuming everyone can open it.
• Converting a low-quality JPG to WebP and expecting improvement. Conversion never adds back detail that lossy compression already threw away. A WebP made from a bad JPG is just a smaller bad image.

How to convert between JPG, PNG and WebP for free

You do not need paid software. Most image editors — including free tools such as GIMP and Photopea — can export all three formats, and modern browsers can convert images entirely on your own device, without uploading them anywhere. That privacy point matters: as we explained in our guide on whether online converters are safe, a converter that runs in your browser never receives your file, so there is nothing for a third party to keep or leak. The same logic applies to image converters, and it is one reason to prefer browser-based tools over upload-based ones for anything you would not want sitting on someone else’s server.

When converting, keep two rules in mind. First, always convert from the best-quality original you have, not from an already-compressed copy. Second, check the result at 100% zoom before publishing — compression artefacts that are invisible in a thumbnail can be obvious at full size, particularly in gradients and skin tones. And if a converted file ends up too large to share, the same file-size discipline applies to documents too: see our guide on how to compress a PDF to 1MB for the same shrink-without-ruining-it approach.

Quick answers

Is WebP better than JPG?

Yes, for web use: at similar visual quality, lossy WebP files are typically 25–34% smaller than JPG files according to Google, and WebP also supports transparency and animation, which JPG does not. JPG still wins on universal compatibility, so it remains the safer choice for files you share outside the web.

Is WebP better than PNG?

For file size, yes: lossless WebP is about 26% smaller than PNG with identical quality, and lossy WebP is far smaller still. PNG still wins when you need a file that every piece of software can open, or when you are handing a graphic to someone else and cannot be sure their tools support WebP.

Should I convert all my website images to WebP?

For images that live on your website, yes — it is one of the simplest performance wins available, and all modern browsers support it. Keep a JPG or PNG fallback for very old browsers, and keep your original masters in a lossless format so you can re-export later.

Does WebP work on iPhone and Safari?

Yes. Safari has supported WebP since version 14, released in 2020, so every reasonably current iPhone, iPad and Mac opens WebP images natively. Only devices running very old operating systems lack support.

Why is my PNG file so much bigger than the same image as a JPG?

Because PNG is lossless: it preserves every pixel exactly, while JPG discards detail your eye is unlikely to notice. For photographs that difference is enormous — a PNG photograph can easily be five times the size of a good-quality JPG of the same image.

Frequently asked questions

Which image format is best for a website in 2026?

WebP is the best default for website images in 2026: it is smaller than JPG and PNG at similar quality, supports transparency and animation, and works in all modern browsers. Use JPG as a fallback for very old browsers, and PNG only for graphics where pixel-perfect quality or universal compatibility matters more than file size.

Is JPG or PNG better quality?

PNG is technically higher quality because it is lossless — it preserves every pixel exactly, while JPG discards some detail to shrink the file. In practice, a high-quality JPG photograph looks identical to a PNG to the human eye while being far smaller, which is why JPG dominates photography and PNG dominates logos and graphics.

Can I use WebP everywhere now?

Almost. All modern browsers, current phones and major social and design platforms handle WebP. The exceptions are older software and very old operating systems, and some print workflows that still expect JPG, PNG or TIFF. For anything you hand to another person or send to print, JPG or PNG remains the safer choice.

Does converting JPG to WebP improve quality?

No. Conversion cannot restore detail that JPG compression already removed. Converting a JPG to WebP can reduce the file size further, but the image will never look better than the JPG you started from — always convert from the highest-quality original you have.

What format should I use for a transparent logo on my website?

Use WebP with transparency for the smallest file on your own site, or PNG if the logo will be shared with designers, clients or other software. Never use JPG for a transparent logo — JPG has no transparency support, so the transparent areas will be filled with a solid colour.

The short version: WebP for the web, JPG for sharing photographs, PNG for crisp graphics and transparency. Pick the format for the job the image actually has to do, and your pages will load faster without ever looking worse.