What is the difference between JPG, PNG, and WebP?

JPG uses lossy compression, ideal for photographs, producing small files but no transparency support. PNG uses lossless compression, producing larger files but preserving every pixel and supporting transparency, making it best for graphics, logos, and screenshots. WebP is a modern format by Google that supports both lossy and lossless compression plus transparency, producing files 25-35% smaller than JPG at equivalent quality.

Does converting an image format reduce quality?

It depends on the target format. Converting to a lossy format like JPG always discards some data, though at 90%+ quality the loss is imperceptible. Converting to PNG is lossless, so no quality is lost. Important: converting a JPG to PNG will not improve the quality of an already-compressed image. It simply prevents further degradation on future saves.

What happens to transparency when I convert PNG to JPG?

JPG does not support transparency. Any transparent areas in your PNG will be filled with a white background during conversion. If you need to keep transparency, convert to WebP instead, which supports transparency like PNG but with much smaller file sizes.

How do I convert PNG to JPG without losing quality?

Set the quality slider to 95-100% for minimal visible loss. Since JPG uses lossy compression, there will always be a tiny amount of data discarded, but at high quality settings it is imperceptible to the human eye. For photographs, even 85% quality looks excellent. Keep your original PNG as a master file in case you need to convert again later.

What is the best image format for websites in 2026?

WebP is the recommended format for most website images. It produces files 25-35% smaller than JPG at the same visual quality and supports transparency. Over 97% of browsers now support WebP. Use JPG as a fallback for email clients and very old systems. PNG should be reserved for graphics that need pixel-perfect sharpness, like logos and icons.

Why can't I open HEIC files on my Windows PC?

HEIC is Apple's default photo format on iPhones and iPads. Windows has limited native support for HEIC, so you may need to install a codec from the Microsoft Store or simply convert HEIC to JPG or PNG for universal compatibility. Our converter handles HEIC files directly in the browser, so you can convert them without installing anything.

Should I convert JPG to WebP for my website?

Yes, in most cases. WebP files are roughly 25-35% smaller than equivalent JPGs, which directly improves page load speed and Core Web Vitals scores. Google explicitly recommends serving images in WebP format. The only reason to keep JPG is if you need to support very old browsers or email clients that don't render WebP.

Is it safe to convert images online? Are my files private?

With AllImgTools, your images never leave your device. All conversion runs in your browser using the HTML5 Canvas API. Nothing is uploaded to any server. This is different from most online converters that require uploading your files for server-side processing. Your images remain 100% private.

Will converting JPG to PNG improve the image quality?

No. Converting a JPG to PNG will not recover detail that was already lost during JPG compression. The resulting PNG will look identical to the JPG, just with a larger file size because PNG stores data losslessly. The benefit of converting to PNG is preventing any further quality loss if you plan to edit and re-save the image multiple times.

What is the difference between JPEG and JPG?

There is no difference. They are the same format. The .jpeg extension was the original name, but early Windows systems only allowed 3-character extensions, so .jpg became the standard. Both extensions use identical compression and produce identical files. Our converter accepts and outputs both interchangeably.

How do I convert a GIF to a static image?

Upload your GIF to our converter and select JPG or PNG as the output format. The tool will capture the first frame of the animation and save it as a static image. If you want to preserve the animation, keep it as GIF or convert to WebP which also supports animation with better compression.

Is there a limit to how many images I can convert?

No. AllImgTools has no daily limits, no account requirements, and no watermarks. Since all processing happens in your browser, there is no server load, so you can convert as many images as you need, completely free.

Image Converter

Convert between JPG, PNG, WebP, HEIC, GIF, SVG and more. No upload — your files stay in the browser.

Drag & drop an image to convert, or click to browse

Drag & drop, paste from clipboard, or click to browse — JPG, JPEG, PNG, WEBP, GIF, BMP, SVG, TIFF

Files never leave your browser · ⌘V to paste a screenshot

How to Convert an Image Format Online

Upload Your Image

Drag and drop any JPG, PNG, WebP, GIF, BMP, SVG, or TIFF file. Your image stays in your browser and is never sent to a server.

Choose Output Format

Select the format you need: JPG for photos, PNG for transparency, WebP for web optimization, or any other supported format.

Download

Click the download button to save your converted image. No watermarks, no limits, no account required.

When to Convert Image Formats

Different platforms and situations call for different image formats. Converting to WebP can cut your website image sizes by a third. Switching from HEIC to JPG makes iPhone photos easy to share with anyone on any device. Removing transparency by going from PNG to JPG gives you a smaller file that works everywhere.

Need a transparent logo? Convert JPG to PNG. Sending photos to a client who only accepts certain formats? Convert in seconds. Working with legacy BMP or TIFF files? Convert them to modern formats for smaller sizes and better compatibility.

Tips for Best Results

✓WebP gives you the smallest file size for web use while keeping quality high. It is the go-to format for modern websites.
✓Use PNG when you need transparency or are working with graphics, logos, and screenshots with sharp text.
✓JPG is ideal for photographs. Set quality to 90% or higher for minimal visible loss.
✓Converting HEIC photos from your iPhone to JPG makes them universally compatible with any app or website.
✓Always convert from the original file when possible. Re-converting an already compressed image can introduce extra artifacts.

Popular Conversions

Jump straight to the conversion you need.

PNG to JPG JPG to PNG WebP to JPG HEIC to JPG JPG to WebP PNG to WebP SVG to PNG GIF to JPG TIFF to PNG TIFF to JPG JFIF to JPG

Frequently Asked Questions

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