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

JPG, PNG and WebP look interchangeable — they're all "image files" — but behind the extensions sit three technologies with opposite logics. Pick the wrong one and you get grainy photos, logos with a white box where the transparency should be, or slow web pages dragged down by files five times heavier than they need to be.

This guide explains JPG vs PNG vs WebP in concrete terms: how each format compresses, how much each weighs for the same image, what each can and can't do. You'll find a comparison table, six real-world scenarios with the right choice for each, a note on EXIF metadata that few people know about, and instructions for converting one format into another in seconds — free and without installing anything.

First the big picture, then the details of each format in the sections that follow.

The quick read: JPG is the universal format for photographs, PNG is the pixel-perfect one for graphics, WebP is the most efficient for the modern web. None of the three is "best" across the board — each wins on its home turf, and the numbers in the table show why: a photo saved as PNG weighs up to ten times more than the same photo as WebP, but a logo saved as JPG shows halos that PNG and WebP simply don't have.

JPG (or JPEG, the de facto standard of digital photography since 1992) uses lossy compression: it analyzes the image and throws away the information the human eye notices least, like the micro-variations of color in uniform areas. The result is a file that's tiny compared to the original data — and it's the reason every camera, phone and website has supported it for thirty years.

You control the amount of loss with the quality setting, from 1 to 100: at 85 the difference from the original is invisible, at 50 the telltale "blocks" (blocky artifacts) appear around the edges. The format has two limitations: it doesn't support transparency — any empty area turns white — and every new save recompresses the file, stacking up degradation with each generation. That's why JPG is perfect as a delivery format (sending, publishing, printing) and terrible as a working format you save over and over. If you have an image in another format, you can bring it to JPG in one click with the tool to convert to JPG.

PNG was born in 1996 with the opposite philosophy: lossless compression, meaning nothing gets discarded. Every pixel of the decompressed file is identical to the original, save after save. On top of that it supports the alpha channel: 256 levels of transparency per pixel, letting a logo sit on any background without the white box.

That fidelity comes at a price: on photographs PNG is inefficient, because millions of subtly different pixels compress poorly without loss — the same photo can go from 300 KB as JPG to 2-3 MB as PNG, with no visible benefit. Where PNG dominates is graphics: logos, icons, screenshots with text, diagrams, images with a few flat colors and clean edges. There, JPG would smear dirty halos around the lines, while PNG stays perfectly crisp and often weighs less too. The memory hook: was it shot? JPG. Was it drawn or captured from a screen? PNG. For the conversion there's the tool to convert to PNG.

WebP, developed by Google and now supported by every browser, is the "hybrid" format: it offers both lossy and lossless compression, supports transparency like PNG and even animation like GIFs. Its strong suit is efficiency: at the same visual quality, a lossy WebP weighs 25-30% less than the equivalent JPG, and a lossless WebP beats PNG almost every time.

For a website the difference is tangible: faster pages, less bandwidth burned, better scores in the speed tests Google uses for rankings. It's the format we recommend for blogs, e-commerce and online portfolios. The drawbacks are mostly residual by now: a few dated desktop programs can't open it, some business systems and print platforms only accept JPG or PNG, and certain social networks reconvert it anyway. The practical strategy: use WebP anywhere the image is headed for a browser, keep JPG or PNG for everything else. Switching between formats takes seconds with the tool to convert to WebP — useful in the opposite direction too, when you download a WebP from the web and your software can't read it.

Theory helps, but decisions get made on concrete cases:

• Holiday photos to send by email → JPG at quality 80: light, universal, anyone can open it.
• Company logo for the website → PNG (or lossless WebP) for the transparency and clean edges; never JPG.
• Screenshot of an error to send to support → PNG: the text stays 100% readable, in JPG it turns to mush.
• Images for a blog article → WebP at quality 80: the 25-30% saved translates into faster page loads.
• Photos to take to a print shop → JPG at quality 90-95: labs always accept it and the loss is imperceptible in print.
• Graphics with text for social media → PNG for crisp lettering; the platform will reconvert it, but starting sharp limits the damage.

One cross-cutting note: if the resulting file is too heavy for its intended use, before pushing the quality too low consider reducing the pixels — it's often the more effective move, as explained in the guide on how to compress photos without losing quality.

There's one difference between the formats you can't see on screen: EXIF metadata. Every photo taken with a phone or camera carries a block of data hidden inside the JPG file: date and time of the shot, device model, exposure settings and — if location was on — the exact GPS coordinates of where it was taken. Anyone who receives the file can read them with any metadata viewer. PNG and WebP can carry similar metadata, but it's in camera JPGs that you'll find it almost every time.

Before publishing photos taken at home or sharing work images, it's worth stripping them out. The simplest way: any conversion done with this site's tools goes through the browser's Canvas API, which regenerates the image from scratch without copying the EXIF — the downloaded file comes out clean of coordinates and shooting data. A side benefit of converting: besides changing format, you also wipe the photo's invisible history. And since all the processing stays on your device, not even the site ever sees the original image.

Conversion takes three steps, identical across all three tools:

1. Open the converter you need: to JPG, to PNG or to WebP.
2. Load the image with the "Choose image" button, by dragging it onto the page or pasting it with Ctrl+V. Any source format your browser can read is fine.
3. For lossy formats, adjust the "Quality" slider while watching the comparison between original and result, then hit "Download".

Two expert warnings. First: converting a JPG to PNG does not bring back the lost quality — data discarded by lossy compression never returns; you just get a heavier file with the same flaws. Second: if you need to shrink the file size as well as change format, pair the conversion with the tool to compress images and, if it's headed for social media, check the right dimensions in the social media image sizes chart.