Convert Images Online —
Fast, Secure & Optimized

Convert between JPG, PNG, WebP, AVIF, HEIC, GIF, BMP, SVG and more. Batch convert, resize, compress, and compare — entirely in your browser. No upload, no signup, always free.

  • No Installation
  • 100% Private
  • High Quality
  • Batch Processing
  • No File Size Limits
WebP
AVIF
PNG
Drop Images Here
or click to browse — drag a folder to batch convert
JPG PNG WebP AVIF GIF BMP HEIC SVG ICO TIFF
Quick Presets
Output Format & Quality
Resize (optional)
Advanced Options
Target File Size
Multi-Format Export

Generate multiple formats from one upload simultaneously:

When checked, overrides the single format selector above.

Upload an image to see estimated output size.
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Files Converted
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Original Size
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Space Saved
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Reduction
Format Recommendation Engine

Based on your image type, click a format to apply it:

Conversion Impact Dashboard
📁
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Original Size
⚡
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Converted Size
🔽
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Size Reduction
🖼
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Images Done
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Load Speed Gain
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BW Saved/Load
Quality Preservation
Responsive Image Pack Generated
Session History
Privacy & Security

Your Images Never Leave Your Device

All conversion happens entirely in your browser. No server involved. No accounts. No data collection.

100% Private Processing
Your images are processed using the HTML5 Canvas API directly in your browser. Zero bytes reach any server.
Automatic Memory Cleanup
All object URLs and canvas data are released when you clear the queue or close the tab. Nothing persists.
No Signup Required
Use the full tool without creating an account, entering an email, or providing any personal information.
Works Offline
Once the page is loaded, image conversion works without an internet connection. Perfect for sensitive files.
Technology

How Image Conversion Works

When you upload an image, the browser decodes it into raw pixel data using the HTML5 Canvas 2D API. The pixels are drawn onto an off-screen canvas at the specified dimensions. The canvas then re-encodes the pixels into the target format using the browser's native codec.

Decode

Browser decodes the source image (JPG/PNG/WebP/HEIC) into raw RGBA pixel data.

Transform

Pixels are drawn to a canvas at the target dimensions. Background fill applied for opaque formats.

Re-Encode

Canvas re-encodes to the target format using the browser's built-in codec (WebP, AVIF, JPEG, PNG).

Download

A temporary Object URL is created for the output blob. Click download — nothing goes to a server.

// WebEasier Client-Side Conversion
const img = await createImageBitmap(file);

const canvas = document.createElement('canvas');
canvas.width = targetWidth;
canvas.height = targetHeight;

const ctx = canvas.getContext('2d');
ctx.drawImage(img, 0, 0, width, height);

const blob = await canvasToBlob(
  'image/webp', quality
);

// → downloads instantly, never uploaded
Format Guide

Best Image Format Guide: JPG vs PNG vs WebP vs AVIF

Choosing the right image format can reduce your images by 30–80%. Here's a complete comparison to help you decide which format is best for your use case.

Format Compression Transparency Animation Browser Support Best For Typical Size
AVIFSmallest Lossy + Lossless ✓ ✓ Chrome 85+, FF 93+, Safari 16.4+ Web photos, modern sites ~60% vs JPG
WebPBest Balance Lossy + Lossless ✓ ✓ All modern browsers Web images, logos ~70% vs JPG
JPG / JPEG Lossy only ✗ ✗ Universal Photos, max compatibility Baseline
PNG Lossless only ✓ ✗ Universal Logos, screenshots, icons 2–5× larger than WebP
GIF Lossless (LZW) ✓ (1-bit) ✓ Universal Simple animations Large for photos
BMP Uncompressed ✗ ✗ Windows / legacy Legacy applications Very large
SVG Vector (XML) ✓ ✓ Universal Icons, logos, illustrations Tiny for vectors
ICO Lossless ✓ ✗ Browser favicons Favicons, Windows icons Small (16–64px)

Photos & Hero Images

Use WebP (quality 80) or AVIF (quality 70). Never use PNG for photos — files are 3–5× larger with no visible benefit.

Logos & Icons

Use SVG when possible (vector, infinitely scalable). For raster icons with transparency, use WebP lossless or PNG.

Mobile & Email

Use JPG (quality 70–80) for maximum compatibility in emails and older Android apps. Keep images under 100KB for fast loading.

Optimization Tips

Reduce Image Size Without Losing Quality

The biggest file-size wins come from format choice, not just compression. Follow these evidence-based steps:

  1. Convert PNGs to WebP at quality 80 — saves 50–80% vs PNG with identical appearance.
  2. Strip EXIF metadata — camera photos carry 20–150KB of invisible metadata. Remove it.
  3. Resize to actual display size — a 4000px photo displayed at 800px wastes 25× the bandwidth.
  4. Use progressive encoding — JPEG and WebP can load top-to-bottom progressively for faster perceived load.
  5. Generate responsive variants — serve 400px images on mobile, 1200px on desktop using <picture> or srcset.
  6. Use AVIF for modern browsers — 30% smaller than WebP with fallback for older browsers.
Original PNG 2.4 MB
JPG Q85 + resize 680 KB
WebP Q80 + resize 320 KB
AVIF Q70 + resize 190 KB ↓92%
FAQ

Frequently Asked Questions

Everything you need to know about online image conversion.

WebP is the best overall format for websites today. It's 25–35% smaller than JPEG at the same quality, supports transparency (like PNG), and is supported by all modern browsers. AVIF is even better (30–50% smaller than WebP) but has slightly lower browser coverage. The recommended approach: serve AVIF to supported browsers with a WebP fallback using the <picture> element.
Use the WebEasier Image Converter above: upload your PNG, select JPG or WebP from the Output Format dropdown, adjust quality to 80, and click "Convert All." Your converted image downloads instantly. No software installation or account required, and your file is never sent to any server.
For lossy formats (JPEG, WebP, AVIF) at quality 80+, the visual difference is imperceptible to the human eye. At quality 60 you may see slight artifacts in complex areas. PNG and WebP Lossless preserve 100% of the original quality. Note: re-converting JPEG→JPEG repeatedly accumulates generation loss. Always start from a lossless source (PNG, RAW) when possible.
The most effective methods: (1) Convert PNG to WebP at quality 80 — saves 60–80% with no visible loss. (2) Strip EXIF metadata — removes 20–150KB of invisible camera data. (3) Resize to actual display dimensions — a 4000px photo shown at 800px is 25× the needed data. (4) Use AVIF for browsers that support it. Use the "Website Optimization" preset in the converter above for automatic best settings.
PNG is a lossless format — every pixel is perfectly preserved. This makes PNG files large (especially for photos). WebP supports both lossless (same quality as PNG, ~30% smaller) and lossy (60–80% smaller, near-identical quality). WebP also supports transparency, animation, and HDR. For photos, WebP lossy at quality 80 is always better than PNG. For logos and screenshots where pixel perfection matters, WebP Lossless beats PNG on size.
Yes. Upload your HEIC file, select JPG as the output format, and click Convert. The heic2any library decodes HEIC in-browser. The resulting JPG is fully compatible with Windows, Android, social media, and all email clients. HEIC-to-WebP is also supported — and produces even smaller files.
There is no server-imposed file size limit since all processing happens locally. Practical limits depend on your device's available memory. Most modern computers can process images up to 30–50 megapixels without issues. Very large multi-megapixel images (50MP+) may take a few seconds on slower devices.
When enabled, the converter automatically generates multiple size variants of your image: full resolution, 1200px, 800px, 400px, and a 120px thumbnail. These are ready to use with the HTML srcset attribute or CSS media queries, so browsers load the appropriately-sized image on each device. This alone can reduce bandwidth usage by 60–80% on mobile devices.
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