Is my image sent to a server?

No. All conversion runs 100% in your browser using the Canvas API. Your images never leave your device.

What image formats can I convert between?

JPEG, PNG, WebP, AVIF, GIF, and BMP. The tool uses the browser's native Canvas API for conversion, so format support depends on your browser — all modern browsers support JPEG, PNG, and WebP.

What is the difference between JPEG and WebP?

WebP is a modern format developed by Google that achieves 25-35% smaller file sizes than JPEG at equivalent visual quality. It supports both lossy and lossless compression, and transparency (unlike JPEG). All modern browsers support WebP.

What is AVIF and should I use it?

AVIF is a next-generation image format based on the AV1 video codec. It achieves 50% smaller files than JPEG at equivalent quality. Browser support is now broad (Chrome, Firefox, Safari 16+). Use AVIF for production images where file size matters most.

What quality setting should I use for JPEG/WebP?

For web use, 75-85% quality is the sweet spot — visually indistinguishable from 100% but significantly smaller. For thumbnails and previews, 60-70% is acceptable. For print or archival, use 90-95% or lossless PNG.

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About the Image Converter

Choosing the right image format and compression level has a direct impact on page load speed and Core Web Vitals scores. Converting a JPEG to WebP typically reduces file size by 25-35% with no visible quality loss. This tool converts images between JPEG, PNG, WebP, AVIF, GIF, and BMP in your browser — no upload required, batch conversion supported.

Format guide

WebP — Best for Web

25-35% smaller than JPEG. Supports transparency and animation. Universally supported in modern browsers. The default choice for web images.

AVIF — Next Generation

Up to 50% smaller than JPEG. Excellent quality at low bitrates. Broad browser support as of 2023. Best for production sites prioritizing performance.

PNG — Lossless

Lossless compression with transparency support. Best for screenshots, diagrams, and images with text. Larger than JPEG/WebP for photographs.

JPEG — Universal

Lossy compression optimized for photographs. Maximum compatibility. Use when you need to support very old browsers or systems.

Web performance tips

Use WebP or AVIF for all web images — significant size savings with no visible quality loss
Serve images at the display size — don't serve a 2000px image in a 400px container
Use <picture> with AVIF + WebP + JPEG fallback for maximum compatibility
Lazy-load images below the fold with loading="lazy"

Frequently asked

Is my image sent to a server?: No. All conversion runs 100% in your browser using the Canvas API. Your images never leave your device.
What image formats can I convert between?: JPEG, PNG, WebP, AVIF, GIF, and BMP. The tool uses the browser's native Canvas API for conversion, so format support depends on your browser — all modern browsers support JPEG, PNG, and WebP.
What is the difference between JPEG and WebP?: WebP is a modern format developed by Google that achieves 25-35% smaller file sizes than JPEG at equivalent visual quality. It supports both lossy and lossless compression, and transparency (unlike JPEG). All modern browsers support WebP.
What is AVIF and should I use it?: AVIF is a next-generation image format based on the AV1 video codec. It achieves 50% smaller files than JPEG at equivalent quality. Browser support is now broad (Chrome, Firefox, Safari 16+). Use AVIF for production images where file size matters most.
What quality setting should I use for JPEG/WebP?: For web use, 75-85% quality is the sweet spot — visually indistinguishable from 100% but significantly smaller. For thumbnails and previews, 60-70% is acceptable. For print or archival, use 90-95% or lossless PNG.