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

All three are raster formats (made of pixels), but they compress images very differently.

JPG (also written JPEG) uses lossy compression: it throws away detail your eye is unlikely to notice in order to make files small. That makes it superb for photographs and realistic images, but it has no transparency, and every time you re-save a JPG it loses a little more quality.

PNG is lossless: it keeps every pixel exactly, supports an alpha channel for transparency, and stays crisp on text, lines, and flat colors. The trade-off is size — PNG files, especially photos, can be much larger than the alternatives.

WebP is the modern option that tries to give you the best of both. It supports both lossy and lossless modes plus transparency, and at comparable quality a WebP is usually 25-35% smaller than the equivalent JPG. Every current major browser — Chrome, Edge, Firefox, and Safari — supports it, which makes it an excellent default for the web.

Use JPG when you're sharing or storing photographs and you want a small file that opens literally anywhere — email attachments, older apps, print shops, and platforms that don't accept newer formats. Just avoid re-saving the same JPG over and over, since quality erodes with each pass.

Use PNG when you need transparency or pixel-perfect sharpness: logos, icons, screenshots, charts, diagrams, and any image with text or hard edges. PNG is also the safe lossless choice when you'll keep editing a file, because it won't degrade. The cost is a bigger file.

Use WebP when you're building or optimizing a website and care about load speed. It shrinks photos noticeably compared to JPG, and unlike JPG it can keep transparency — so it's a great, lighter replacement for heavy PNG logos and graphics too. The only real caveat is the occasional old tool or workflow that still expects a classic JPG or PNG, in which case converting back takes one click.

If you want one rule of thumb: use WebP for anything that lives on the web, JPG for photos you need to share widely, and PNG when transparency or perfectly sharp graphics are non-negotiable.

A practical pattern that works for most people: design and edit in PNG (lossless, transparency-friendly), export to WebP for your website to keep pages fast, and keep a JPG copy on hand for places that won't accept WebP. None of these choices are permanent — converting between formats is quick and reversible, so you can always adapt to whatever a specific tool, client, or platform needs.

Tooldrop's Image Converter at /image/convert lets you switch any image between JPG, PNG, and WebP, and there are dedicated one-click converters for the common pairs: /image/png-to-jpg, /image/jpg-to-png, /image/jpg-to-webp, /image/webp-to-jpg, /image/png-to-webp, and /image/webp-to-png.

Everything runs on-device using your browser's Canvas API, so your images are never uploaded — they stay on your computer or phone the whole time. It's free, there's no sign-up, and there are no limits.

Two things worth knowing so the result matches your expectations: converting a lossy JPG to PNG won't recover detail the JPG already discarded (you just get a lossless file to edit from here), and converting a transparent PNG or WebP to JPG fills the transparent areas with a solid white background, because JPG can't store transparency. If you need to keep transparency, choose PNG or WebP as your target.