PNG, JPG, or WebP: Which File Should You Send?

The extension is not a quality setting. PNG, JPG, and WebP store pixels differently, and converting blindly either blows the file up or throws away the edge you needed. I convert in the browser, from the format I was given to the format the next person asked for, and I keep the file I started with.

If it is a photograph

Use JPG or WebP. A camera picture saved as PNG is often enormous and not sharper in any way a viewer can see. PNG to JPG is the right direction for a photo you need to email or drop into a slide. Look at faces and fine detail after the convert. JPG has no transparency. If the photo was a cut-out on a transparent background, the empty area will become a solid colour. Put it on the correct background first, or keep PNG.

WebP is the one I prefer on a website in 2026. Convert to WebP when the image is going on a page you control. Browsers people actually use can show it. A university upload form from 2014 might not. Read the allowed list before you convert.

If it is a screenshot, a logo, or a diagram

Prefer PNG, or SVG if it is truly a vector. Hard edges and small text look worse as JPG because the compression is built for photos. A logo with transparency should stay PNG or a real SVG. Wrapping a PNG inside an SVG file does not make it a vector. It only changes the envelope. SVG to PNG is what you want when a form demands a PNG of a logo that was drawn as vectors. Export large enough for the biggest size you will display.

JPG to PNG does not add transparency and does not repair a blurry photo. It only gives you a PNG container. Use it when a tool rejects JPEG, and expect the file to get larger.

When someone says they cannot open it

WebP is the usual culprit. WebP to JPG solves a form, a marketplace, or an old phone that lists only JPG. Check the background if the WebP was transparent. Then stop converting. JPG to WebP to JPG again is how a product photo turns to mush.

Print shops often want PDF, TIFF, or a high-quality JPG. Ask them. Do not send the tiny WebP you made for the homepage and expect a banner to look sharp.

A short decision

Photo for the web: WebP, with a JPG fallback if you must. Photo for a picky form: JPG. Logo or screenshot: PNG. Vector logo that must scale: real SVG, exported to PNG at a known pixel size when the slot is a bitmap. Master file: whatever the design tool exported, left alone.

Name the files so the format is obvious. logo.png and logo-web.webp can sit next to each other. logo-final-FINAL2.jpg cannot. Convert once, look once, and send that file. The converters on this site, including PNG to JPG and WebP to JPG, are for that single hop. They are not a loop.

Two files I keep side by side

For a logo I keep the SVG or the large PNG, and I export a PNG at the exact pixel size a social avatar needs. I do not let the social network crop a wide banner and call it the mark. For a product photo I keep the camera JPG or the raw export, and I publish a WebP that I looked at on a phone. The published file can be replaced. The master should not be the same file as the published one, or the next edit starts from damage.

If a teammate asks for "the image", ask which one. Sending the 4000-pixel PNG by WhatsApp will recompress it into a JPG you did not approve. Sending a link to the web-sized file is often kinder, and you can still attach the master when they are the printer. Transparency is the question that settles arguments: if the background must stay empty, you are in PNG or SVG, not JPG. If the background is a real scene, you are in JPG or WebP, and PNG is only making the email heavier.

When you are unsure, convert a copy, zoom to the text or the logo edge, and decide with that on screen. The format list on a form is a constraint. The picture is the thing you are responsible for. One hop, one look, then send it and leave the master where the optimiser script cannot find it. If a colleague later asks why the logo looks soft, you will still have the sharp file, and you will not be reconstructing it from a WhatsApp forward. That single habit, a master folder that is not the upload folder, prevents more quality loss than any slider.