20+ Image Formats Supported
Convert between JPG, PNG, WebP, HEIC, BMP, GIF, SVG, AVIF, TIFF and many more. Whether you need to convert iPhone HEIC photos to JPG or switch from PNG to WebP for faster websites — we support it all.
20+ Formats · Free · No Signup · Instant
Convert Image Online —
Any Format, Instantly Free
Convert image online free — from JPG to PNG, PNG to WebP, HEIC to JPG, and 20+ more format conversions. No software, no signup, no watermark. Fully browser-based and 100% private.
JPG to PNGPNG to JPGJPG to WebPHEIC to JPGPNG to WebPWebP to JPGSVG ConverterBatch Convert
or drag and drop your image here
Supports JPG, PNG, WebP, HEIC, BMP, GIF, SVG · Max 10 MB · Sign upfor batch & larger files
Convert From
Convert To
20+
Supported formats
100M+
Images converted
5s
Average convert time
0
Files sent to server
Why ImageResizer
The Best Free Online Image Converter
Our free image converter gives you instant, high-quality format conversions — directly in your browser. No software, no account, no watermark on your converted images.
100% Private — No Server Upload
All image conversion happens entirely inside your browser using the HTML5 Canvas API. Your images never leave your device — no server uploads, no logs, no privacy risk. Safe for personal and professional photos.
Batch Convert Multiple Images
Upload and convert multiple images at the same time. Select your output format once and apply it to all files simultaneously. Download each image individually or grab them all in a single ZIP file instantly.
Zero Quality Loss on Lossless Formats
When converting to lossless formats like PNG, every pixel is preserved perfectly. For lossy formats like JPG and WebP, you control the quality level using our slider — so you always get the right balance between size and quality.
Instant Conversion — No Waiting
Your image is converted in seconds — often under 5 seconds. Unlike server-based tools that queue your file or show upload progress bars, our browser-based converter processes your image the moment you click Convert.
Works on All Devices
Our online image converter is fully responsive. Use it on desktop, tablet, or mobile — on Windows, Mac, Android, or iOS. No app installation required. Works on Chrome, Firefox, Safari, and Edge.
How It Works
How to Convert an Image Online in 3 Steps
Converting an image format with ImageResizer takes under 10 seconds. Here's exactly how our free online image converter works.
Upload Your Image
Click "Select Image" or drag your file directly onto the tool. Supports JPG, PNG, WebP, HEIC, BMP, GIF, SVG, and more. Nothing is uploaded to any server.
Choose Output Format
Select your target format from the dropdown — JPG, PNG, WebP, BMP, and more. Optionally adjust quality settings for lossy formats like JPG and WebP.
Download Converted File
Click "Convert Image" then download your file instantly. Your converted image is ready in seconds — no watermark, no signup, no limits.
Supported Formats
Every Image Format You'll Ever Need
Our image converter supports all major formats — from the universal JPG to the modern WebP and AVIF. Here's what each format is best used for and which conversions we support.
JPG / JPEG
The Universal Photo Format
JPG is the world's most widely used image format. Perfect for photographs and any image with millions of colors. Uses lossy compression for small file sizes.
PNG
Lossless with Transparency
PNG is the go-to format for graphics, logos, and icons — especially those that need a transparent background. Uses lossless compression so no quality is lost.
WebP
The Best Format for the Web
WebP was created by Google specifically for web performance. It produces files 25–34% smaller than JPEG at equivalent quality, with full transparency support like PNG.
HEIC
iPhone & Apple Photos
HEIC (High Efficiency Image Container) is Apple's default photo format on iPhone and iPad. It produces smaller files than JPG at the same quality but isn't widely supported outside Apple devices.
SVG
Scalable Vector Graphics
SVG is an XML-based vector format that scales to any size without quality loss — perfect for logos, icons, and illustrations. Create infinitely sharp images for any screen size.
AVIF
Next-Gen Web Format
AVIF is the newest major image format, offering up to 50% smaller file sizes than JPEG with comparable quality. Supported by ~90% of modern browsers and rapidly becoming the web's future standard.
BMP
Windows Bitmap
BMP is an older Microsoft Windows format that stores images without compression. Files are large but contain full pixel data — most useful when converting from BMP to a modern compressed format.
All Conversions
Complete Image Format Conversion Guide
Here are all the most popular image format conversions supported by ImageResizer, with guidance on when and why to use each one.
| Conversion | Best Used For | Quality | Quick Convert |
|---|---|---|---|
| JPG → PNG | Adding transparency to photos | Lossless output | Convert Now |
| PNG → JPG | Reducing PNG file size for email/web | Adjustable quality | Convert Now |
| JPG → WebP | Faster website loading speeds | 25–34% smaller | Convert Now |
| PNG → WebP | Web graphics with transparency + speed | 26% smaller than PNG | Convert Now |
| WebP → JPG | Sharing WebP in apps that don't support it | Adjustable quality | Convert Now |
| WebP → PNG | Editing WebP images in legacy software | Lossless output | Convert Now |
| HEIC → JPG | Making iPhone photos universally compatible | Adjustable quality | Convert Now |
| HEIC → PNG | iPhone photos for design software | Lossless output | Convert Now |
| SVG → PNG | Exporting vectors as raster images | Set any resolution | Convert Now |
| PNG → SVG | Turning logos/icons into scalable vectors | Traced vector output | Convert Now |
| BMP → JPG | Reducing massive Windows bitmap files | Up to 90% smaller | Convert Now |
| GIF → WebP | Better animated images with smaller files | Better than GIF | Convert Now |
File Size Comparison — Same Photo in Different Formats (base: 3.0 MB JPG)
JPG
~580 KB
At 80% quality. Most compatible format for all devices.
PNG
~2.4 MB
Lossless. Larger files but zero quality loss. Great for graphics.
Best for Web
WebP
~370 KB
25–34% smaller than JPG at same quality. Supports transparency.
AVIF
~210 KB
Up to 50% smaller than JPG. Next-gen format, growing support.
Use Cases
Why Do You Need to Convert Image Formats?
Different situations call for different image formats. Here are the most common reasons people need a free online image converter.
Website Performance & SEO
Converting images to WebP or AVIF reduces file sizes by up to 50%, which directly improves page speed, Core Web Vitals scores, and Google search rankings. Faster pages rank higher and convert better.
iPhone HEIC Photos
iPhones shoot in HEIC by default since iOS 11. While excellent for storage, HEIC files don't open on Windows, Android, or most apps. Converting HEIC to JPG makes your photos universally compatible instantly.
Transparency Requirements
JPG doesn't support transparent backgrounds. If you need a logo or icon with a transparent background, convert JPG to PNG or WebP. Then you can place it over any color or background without a white box.
Social Media & Messaging
Different platforms prefer different formats. Facebook and Twitter handle JPG best. WhatsApp compresses JPG less than PNG. Instagram displays PNG text sharper. Converting to the right format gets you the best result.
Software Compatibility
Some design tools, CMS platforms, and e-commerce systems only accept specific formats. Magento may reject WebP, Word documents need PNG, and older printers require TIFF. Our converter handles all of these needs.
Reducing File Size for Uploads
Many portals limit uploads to 2 MB or require JPG specifically. Converting from large PNG or BMP files to JPG or WebP massively reduces file size while meeting format requirements for forms, job applications, and CMS uploads.
Questions & Answers
Frequently Asked Questions About Image Conversion
Everything you need to know about converting images online for free.
Upload your image to ImageResizer's free converter, select your output format from the dropdown, and click Download. The entire process takes under 10 seconds and is completely free — no account, no watermark, no limits on the number of conversions.
We support JPG, PNG, WebP, HEIC, BMP, GIF, SVG, AVIF, TIFF and more. Popular conversions include JPG to PNG, PNG to JPG, JPG to WebP, HEIC to JPG, PNG to WebP, WebP to JPG, SVG to PNG, and BMP to JPG. Over 20 format combinations are available.
Converting to lossless formats like PNG preserves every pixel with zero quality loss. Converting to lossy formats like JPG or WebP involves compression, but you can control the quality level using our slider. At 80–85% quality the difference is invisible to the human eye while achieving 60%+ file size reduction.
No. All image conversion is performed entirely inside your web browser using the HTML5 Canvas API. Your images never leave your device — there are no server uploads, no data logs, and no privacy risks. This makes our tool safe for personal photos, confidential client images, and sensitive documents.
WebP produces files 25–34% smaller than JPEG and 26% smaller than PNG at equivalent visual quality. This directly improves your website's page speed, Google PageSpeed scores, and Core Web Vitals — which are ranking factors for Google Search. WebP also supports transparency like PNG and is supported by 96%+ of modern browsers.
Upload your HEIC file (from your iPhone or iPad) to our converter, select JPG as the output format, and click Download. Your HEIC photo is converted to a universally compatible JPG file in seconds. This works perfectly for sharing photos with Windows or Android users, uploading to websites, or printing at a photo lab.
Yes. Our batch converter lets you upload and convert multiple images at the same time. Select your output format once and all your uploaded files are converted simultaneously. Download each image individually or get them all in a single ZIP file — great for photographers, designers, and content teams handling large volumes.
WebP is the best format for websites in 2025. It's smaller than JPEG, supports transparency like PNG, handles animations like GIF, and is supported by 96%+ of modern browsers. For maximum performance with newer browsers, AVIF is even smaller but has slightly lower browser support (~90%). Use JPG as a fallback for older browsers.
More Free Tools
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Add transparency to your photos
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Reduce PNG size for sharing
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Ready to Convert Your Image?
Free, instant, and 100% private. 20+ formats supported — no signup needed.