20+ Formats Supported
Convert between JPG, PNG, WebP, HEIC, BMP, GIF, SVG, AVIF, TIFF and more. Seamlessly transform iPhone HEIC photos to JPG or PNG to WebP for faster websites.
Convert Image Online
Convert JPG, PNG, WebP, HEIC, SVG, BMP, and 20+ formats in seconds. Fast, private, and 100% free.
20+ Formats Supported · 100% Free · No Signup
or drag and drop your image here
JPG, PNG, WebP, HEIC, SVG, BMP · Max 10 MB · Free forever
JPG to PNGPNG to JPGHEIC to JPGJPG to WebPPNG to WebPSVG Converter100% Private
20+
Supported Formats
100M+
Images Converted
<5s
Average Convert Time
0
Files Stored on Server
Why ImageResizer
Universal Image Format Converter
Instant format conversions directly in your browser. Zero software, zero signup, zero watermarks.
100% Private — In-Browser Processing
All conversions run entirely within your browser via the HTML5 Canvas and WebCodecs APIs. Your files never leave your device with zero cloud storage or logs.
Batch Image Conversion
Convert multiple images simultaneously. Choose your target format once and transform your entire batch at once, then download individually or as a single ZIP.
Lossless Precision & Quality Controls
Lossless formats like PNG maintain 100% pixel fidelity. For lossy formats like JPG and WebP, fine-tune the quality slider for optimal balance.
Lightning Fast — Under 5 Seconds
No server queues, slow uploads, or waiting times. Your image is processed the exact millisecond you drop it into the browser.
Works on All Devices
Fully responsive and tested across Safari, Chrome, Edge, and Firefox on iPhone, iPad, Mac, Windows, and Android without installing apps.
How It Works
How to Convert an Image in 3 Steps
Converting an image format with ImageResizer takes under 10 seconds.
1
Upload Your Image
Click "Select Image to Convert" or drag any JPG, PNG, WebP, HEIC, or SVG file directly into the browser.
2
Choose Output Format
Pick your target format from the list (PNG, JPG, WebP, SVG, AVIF) and adjust quality settings if desired.
3
Download Converted Image
Your converted image is generated in seconds. Download immediately with zero watermarks or signup barriers.
Supported Formats
Every Image Format Supported
Compare specifications and explore one-click format conversion pathways.
JPG / JPEG
Universal Photo Format
The world's standard for photography and colorful images. High compression with adjustable lossy quality.
PNG
Lossless & Transparent
Perfect for logos, screenshots, and UI elements where transparency and sharp lines are critical.
WebP
Modern Web Standard
Created by Google for high-speed sites. Delivers 25–34% smaller sizes than JPEG with alpha transparency.
HEIC
Apple iPhone Photos
Apple's default photo container on iOS. Convert to JPG or PNG for instant compatibility on Windows and Android.
SVG
Scalable Vector
XML vector graphics that scale infinitely without pixelation. Ideal for company logos and crisp web icons.
AVIF
Next-Gen Efficiency
Advanced compression format offering up to 50% smaller sizes than JPG. Supported by all modern browsers.
BMP
Windows Bitmap
Uncompressed raster format. Converting BMP to JPG or WebP drastically shrinks file size while preserving fidelity.
All Conversions
Conversion Pathways & File Sizes
Compare specifications and explore quick format conversions.
| Conversion | Best Used For | Quality | Action |
|---|---|---|---|
| JPG → PNG | Adding transparency to photos | Lossless output | Convert |
| PNG → JPG | Reducing PNG file size for email/web | Adjustable quality | Convert |
| JPG → WebP | Faster website loading speeds | 25–34% smaller | Convert |
| PNG → WebP | Web graphics with transparency + speed | 26% smaller than PNG | Convert |
| WebP → JPG | Sharing WebP in legacy apps | Adjustable quality | Convert |
| WebP → PNG | Editing WebP images in design software | Lossless output | Convert |
| HEIC → JPG | iPhone photos for Windows/Android | Adjustable quality | Convert |
| HEIC → PNG | iPhone photos for high-res design work | Lossless output | Convert |
| SVG → PNG | Exporting vector graphics to raster | Set any resolution | Convert |
| PNG → SVG | Converting logos to vector graphics | Traced vector output | Convert |
| BMP → JPG | Shrinking massive bitmap files | Up to 90% smaller | Convert |
| GIF → WebP | Smaller animations with higher quality | Modern WebP animation | Convert |
File Size Comparison — Same Photo (Original: 3.0 MB JPG)
JPG
~580 KB
At 80% quality. Most compatible on all devices.
PNG
~2.4 MB
Lossless. Zero quality loss, ideal for graphics.
Best for Web
WebP
~370 KB
25–34% smaller than JPG with alpha transparency.
AVIF
~210 KB
Up to 50% smaller than JPG with modern compression.
Use Cases
Why Convert Image Formats?
Format optimization tailored to your website, platform, and workflow requirements.
Website Performance & SEO
Converting images to modern WebP or AVIF shrinks payload sizes by up to 50%, directly improving page speed and Core Web Vitals rankings.
iPhone HEIC Photos
iPhones save photos as HEIC. Converting HEIC to JPG enables effortless sharing across Windows, Android, and web portals without software errors.
Transparency Requirements
JPG photos cannot contain transparent backgrounds. Converting to PNG or WebP allows your logos and cutouts to float seamlessly over colored layouts.
Social Media Optimization
Social channels re-encode your files aggressively. Pre-converting your image to optimized JPG or PNG maintains original crispness upon upload.
Application Compatibility
Design suites, CMS platforms, and document editors frequently demand specific formats. Seamlessly bridge format gaps in one step.
File Size Constraints
Portals with strict 1–2 MB upload limits reject heavy PNGs. Converting to JPG or WebP drastically cuts file size while preserving clarity.
Questions & Answers
Frequently Asked Questions
Everything you need to know about converting images online for free.
Upload your image, choose your output format, and click Download. The entire process takes under 5 seconds and is completely free — no account, no watermark, and no file quantity caps.
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, and SVG to PNG.
Converting to lossless formats like PNG preserves every pixel with zero quality loss. Converting to lossy formats like JPG or WebP gives you full slider control over compression.
No. All conversion algorithms execute locally inside your browser via the HTML5 Canvas API. Your images never leave your device — no cloud uploads, logs, or security risks.
WebP produces files 25–34% smaller than JPEG and 26% smaller than PNG at equivalent visual quality. This directly enhances your website speed and Google Core Web Vitals rankings.
Upload your iPhone HEIC file, choose JPG as your output, and click Download. Your photo is converted into a universally compatible JPG ready for Windows, Android, and social media.
Yes. Our batch conversion mode allows uploading multiple images at once. Apply your format setting to the entire batch and download individually or in a single ZIP.
WebP is the current gold standard for websites. It combines smaller file sizes than JPEG with transparent background support like PNG, and runs on 97%+ of modern browsers.
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Optimize photos for web speed
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Convert iPhone photos instantly
Ready to Convert Your Image?
Free, fast, and 100% private. 20+ formats supported with zero signup needed.