Image format converter

If you want to convert images into a different format fast (for example PNG to JPG, JPG to WebP, or WebP to PNG), this online image format converter is built for exactly that. In one tool you can handle the most common conversions so your images stay compatible for uploads, websites, ads, blog posts, and e-commerce product photography. The converter supports PNG, JPG/JPEG, and WebP, and where your browser allows it, AVIF output is also available. Converting isn’t only about convenience: choosing the right format can dramatically reduce file size (especially with WebP or AVIF), which helps pages load faster, improves Core Web Vitals, enhances user experience, and can contribute to better SEO. You can adjust output quality to balance sharpness and size, and when converting transparent images to JPG you can set a background color so the result looks correct. Converted files are available for immediate download—so you can create “web-ready” images in just a few clicks.

Image format converter guide

Image formats matter more than most people think. The exact same photo or graphic can be a fast-loading, web-optimized asset—or a heavy, slow, hard-to-use file—depending purely on the format you store and upload. This converter is designed to make the most common transformations PNG ↔ JPG ↔ WebP (and AVIF where supported) easy, clear, and practical, while also letting you control the quality vs file size tradeoff.

Below you’ll learn when to use each format, the benefits and limitations of PNG, JPG/JPEG, WebP, and AVIF, why file sizes can differ massively, how the quality slider changes the output, why background color becomes critical when saving transparency to JPG, and how to pick the best format for websites, online stores, social media, and advertising.

Why convert images

Image conversion is useful for three main reasons:

Compatibility

Not every platform handles modern formats the same way. In many systems, JPG/JPEG is still the safest choice for photos, while WebP or AVIF may require support in the CMS, the theme, the image pipeline, or the ad platform. If you see upload errors or a picture doesn’t render correctly, switching format is often the quickest solution.

Smaller files and faster pages

Images are usually the biggest contributors to page weight. A poorly chosen format can create multi-megabyte files that:

• slow down page loading

• weaken mobile performance

• increase bandwidth usage

• negatively influence performance signals that matter for SEO (including Core Web Vitals)

A smart conversion—especially to WebP or AVIF—can significantly reduce size while keeping quality high.

Functional needs: transparency, crisp edges, readable text

The content of an image often dictates the right format:

• logos, icons, cutouts → transparency needed → PNG/WebP/AVIF

• screenshots with UI text → crisp edges needed → PNG (or high-quality WebP)

• photos → best size/quality → JPG/WebP/AVIF

PNG vs JPG vs WebP vs AVIF

JPG (JPEG): the classic photo format

JPG/JPEG is the most widely supported image format and remains a reliable choice for photography. It uses lossy compression, meaning it discards some data to reduce file size. With good settings, the visual difference is often minimal.

Pros

• universal compatibility across platforms and editors

• excellent for photos

• small files at good visual quality

Cons

• no transparency

• artifacts are more visible on sharp edges, text, and flat graphics

Best for

• product photos, lifestyle shots, editorial images

• social media creatives (when transparency isn’t needed)

PNG: lossless, sharp, supports transparency

PNG is a lossless format, ideal for images that need crisp lines, readable text, UI elements, or transparency.

Pros

• sharp edges and text remain clean

• supports transparency (alpha channel)

• avoids “smudging” typical of aggressive JPG compression

Cons

• often much larger than other formats, especially for photos

Best for

• logos, icons, UI elements

• screenshots and diagrams

• simple graphics where quality matters more than size

WebP: modern web format with great balance

WebP was created specifically for the web. It often produces smaller files than JPG at similar quality and can also handle transparency like PNG.

Pros

• frequently smaller than JPG/PNG at comparable quality

• works for both photos and graphics

• supports transparency (WebP alpha)

• widely supported in modern browsers

Cons

• some older workflows, tools, or CMS setups still struggle with it

• may require configuration in older sites/plugins

Best for

• websites and blogs where speed matters

• e-commerce product images (if supported by your platform)

• large galleries where bandwidth savings add up quickly

AVIF: excellent compression, limited export support in some browsers

AVIF is one of the most efficient modern formats. In many cases it can beat WebP on file size at similar quality. The catch is that support varies: a browser might display AVIF fine but not support exporting/encoding it.

Pros

• outstanding quality-to-size ratio

• especially strong for photos

• supports transparency

• can deliver very small files for web use

Cons

• not every browser supports AVIF export

• some platforms and tools don’t handle it well

• encoding/decoding can be slower in certain environments

Best for

• maximum compression on modern stacks

• image-heavy pages where every kilobyte matters

• projects where you’ve verified platform support

AVIF in practice

This tool avoids AVIF becoming a dead end:

• The AVIF option is only shown if your browser can actually export to AVIF.

• If exporting fails for any reason, the tool can safely fall back to WebP and inform you.

Practical takeaway:

• If you see AVIF as an option, it will likely work.

• If you don’t, choose WebP—usually the best general-purpose format for the web.

Quality settings

The quality setting for JPG/WebP/AVIF controls how aggressively the image is compressed. Lower quality means:

• smaller files

• more compression artifacts (blur, blockiness, halos around details)

Practical targets:

• 0.90: very high quality, often still small

• 0.80–0.85: excellent web compromise for most photos

• 0.70: often OK for photos, risky for text/graphics

• below 0.60: only for aggressive downsizing—use carefully

If your image contains text, thin lines, or sharp edges, avoid going too low. For photos, you can often drop quality without noticeable loss.

Transparency and JPG background color

PNG/WebP/AVIF can store transparency. JPG cannot.
So if you convert a transparent PNG to JPG, the transparent areas must be filled with a solid color—this is why the background color setting exists.

Good defaults:

• White: safest for most websites and documents

• Black: better for dark UI themes and dark backgrounds

If you truly need transparency, don’t use JPG—choose PNG or WebP (or AVIF where supported).

Quick format chooser

“I need images for a website and fast loading”

• Photos: WebP (or AVIF if available)

• Graphics/logos: WebP or PNG

• Maximum compatibility: JPG for photos, PNG for logos

“E-commerce product photos”

• Photos: JPG or WebP (depending on platform support)

• Large catalogs: WebP can save significant bandwidth

“Social posts / ads”

• Photo-based creatives: JPG or WebP

• Text overlays: use higher quality (0.85–0.92) to keep text readable

“Logo, icon, transparent background”

• PNG or WebP

• Avoid JPG (no transparency)

“Screenshot with text”

• PNG for sharp text

• or high-quality WebP if you need smaller files

Privacy and metadata

Many photos include metadata (EXIF), such as:

• capture time

• camera/phone model

• sometimes location data on mobile devices

Browser-based re-exporting typically strips most EXIF metadata, so the converted file is often “cleaner” for sharing. Still, treat conversion as creating a practical web-ready file—not a full privacy guarantee.

Tips for consistently good results

• For the smallest web files: try WebP around 0.82

• If you need even smaller and AVIF is available: test AVIF

• If you must preserve transparency: PNG/WebP/AVIF

• For text-heavy images: avoid going below 0.80

• Always inspect at 100% zoom, especially on text, logos, and UI elements

Common mistakes

• Converting transparent PNG → JPG without choosing a background color

• Setting quality too low for images with text (readability drops fast)

• Saving photos as PNG (file size explodes for no benefit)

• Using WebP/AVIF in a workflow where downstream tools can’t open it

A good image format converter lets you optimize for both compatibility and speed. JPG/JPEG is the safest photo format, PNG is best for transparency and crisp graphics, WebP is the web-friendly all-rounder, and AVIF can deliver even smaller files in modern environments—when export is supported. Use the quality setting to balance detail and size, and remember that background color matters when converting transparent images to JPG.