JPG vs PNG vs WebP: Which to Use

The one-paragraph version

JPG is for photographs — real-world images with lots of gradual color variation. PNG is for anything that needs a transparent background, or graphics with flat colors and sharp edges like logos and screenshots with text. WebP is the newer, more efficient option that can usually replace either one, with the one real caveat that a small number of older tools and email clients still don't support it.

JPG: built for photographs

JPG uses "lossy" compression — it throws away some image detail to achieve a much smaller file size, and it's specifically tuned for the kind of smooth, gradual color transitions found in real photographs (skies, skin tones, foliage). That's why a photo compressed as JPG can look nearly identical to the original at a fraction of the file size, while the same compression applied to a screenshot with sharp text edges produces visible fuzzy artifacts around every letter.

JPG's real limitation: no transparency support at all. A JPG is always a rectangle — there's no way to make part of it see-through.

PNG: built for transparency and sharp edges

PNG uses "lossless" compression — nothing is thrown away, which is why a PNG of a photo is typically much larger than the equivalent JPG for very little visual benefit. Where PNG earns its place is anything with transparency (a logo you want to place over different backgrounds, an icon, a cutout from the Background Remover) or graphics with flat colors and hard edges — screenshots, diagrams, text-heavy images — where JPG's photo-tuned compression would introduce visible blur and artifacting around every edge.

The tradeoff: PNG files for photographic content are often 3-5x larger than an equivalent JPG, for a difference most people can't actually see.

WebP: the newer option that usually wins

WebP was built specifically to solve the problem of picking between JPG and PNG — it supports both lossy compression (competing with JPG, usually producing smaller files at equal visual quality) and lossless compression with full transparency (competing with PNG, again usually smaller). For most new use cases in 2026, WebP is genuinely the better default.

The one real caveat, and it's worth being honest about rather than glossing over: while virtually every modern browser supports WebP, a handful of older tools, some email clients, and some legacy software still don't open it correctly. If you're sending an image somewhere you don't control the software (a print shop, an older internal business system, an email attachment for someone on unknown software), JPG or PNG remain the safer universal choice. For anything staying on the web — a website, a web app, modern social platforms — WebP is usually the right call.

Practical cases: which one do you actually need?

• A photo for a website: WebP if you control how it's displayed (most modern sites), JPG if you need maximum compatibility.
• A logo that needs to sit over different colored backgrounds: PNG or WebP — both support transparency, JPG does not.
• A screenshot with text you want to stay sharp: PNG or WebP (lossless mode) — JPG will blur small text at typical compression levels.
• A photo you're emailing or sending to someone whose software you don't control: JPG — the safest universal choice.
• Printing a photo: Whatever format, at the highest resolution and quality available — compression format matters less than starting resolution for print.
• A background-removed cutout (product photo, portrait): PNG or WebP — you need the transparency; JPG can't represent it at all.

Converting between them without losing quality

Going from PNG to JPG means permanently losing transparency (JPG has nowhere to store it) and accepting some lossy compression — usually fine for photographic content, usually a mistake for logos or text-heavy graphics. Going from JPG to PNG doesn't add back any detail the JPG compression already discarded — it just stops throwing away further detail, at the cost of a larger file for no real quality gain on photographic content.

The generally safe direction is converting *into* WebP from either format, since it can losslessly represent everything PNG can and compress photographic content about as well as JPG, often better. FileSeb's Image Compressor supports WebP output directly, including preserving transparency from a source PNG — something worth knowing since many "JPG converter" tools silently flatten transparency to white without telling you.

The short answer

Photo, no transparency needed, maximum compatibility → JPG. Anything needing transparency or sharp graphic edges → PNG. Everything else, especially if you control the display environment → WebP.