100% Free & Private
No upload · No sign-up · Runs in your browser

Convert Images Instantly.
Any Format. Bulk Ready.

PNG to WebP · JPG to WebP · WebP to PNG · HEIC to JPG · AVIF · TIFF · BMP · GIF
Convert up to 20 images at once — free, fast, and completely private.

PNG → WebP JPG → WebP WebP → PNG JPG → PNG PNG → JPG GIF → WebP

Drop up to 20 images here

or browse files · PNG, JPG, WebP, HEIC, AVIF, TIFF, GIF, BMP, ICO, SVG

Max 20 images · Up to 25MB each · Processed locally in your browser

Lightning Fast

Canvas API processing means instant conversion — no waiting for server round-trips.

100% Private

Your images never leave your device. Everything runs locally inside your browser.

Bulk Conversion

Convert up to 20 images at once and download them all in a single ZIP file.

Quality Control

Fine-tune output quality with a simple slider. Balance file size against visual fidelity.

Resize on Convert

Optionally resize images to exact pixel dimensions while converting. Aspect ratio lock included.

15+ Formats

PNG, JPG, WebP, AVIF, GIF, BMP, TIFF, HEIC, ICO, SVG — input and output widely covered.

Supported Conversion Formats

ImageShift handles all the popular image formats developers, designers, and marketers need.

Convert From Convert To Best Use Case Size Savings
PNG WebP Web images, blog posts, e-commerce thumbnails Up to 30% smaller
JPG WebP Photography, hero images, social media Up to 25–34% smaller
WebP PNG Editing in Photoshop / GIMP, lossless archiving Lossless quality
WebP JPG Social sharing, email attachments Broad compatibility
PNG JPG Reducing file size of screenshots and graphics Up to 60% smaller
JPG PNG Adding transparency layer, design assets Lossless re-encode
GIF WebP Animated thumbnails, web performance Up to 64% smaller
BMP JPG Scanned documents, Windows graphics Dramatic reduction
PNG AVIF Next-gen web, Chrome / Firefox delivery Up to 50% smaller
JPG AVIF High-res photography on modern browsers Up to 50% smaller

How to Convert Images Online

Three steps. No account. No waiting.

  1. Upload Your Images

    Drag and drop up to 20 images into the converter, or click to browse your files. Supports PNG, JPG, WebP, HEIC, AVIF, GIF, BMP, TIFF, ICO, and SVG.

  2. Choose Format & Quality

    Select your target format (WebP, JPG, PNG, AVIF…) and adjust quality with the slider. Optionally resize to specific pixel dimensions.

  3. Convert & Download

    Hit Convert All and watch the progress bar. Download files individually or grab the full ZIP with one click.

Frequently Asked Questions

Everything you need to know about converting images online.

Drop your PNG files into ImageShift, select WebP from the format dropdown, adjust quality if needed, then click Convert All. Your WebP files download instantly — no sign-up or payment required.
Yes — completely. ImageShift uses the browser's Canvas API to process images entirely on your device. No file is ever sent to any server, so your images remain private. Even your internet connection is not involved in the actual conversion.
Yes. You can convert up to 20 images in a single batch. Each file shows its own progress indicator, and when done you can download everything as a single ZIP archive.
WebP delivers 25–34% smaller file sizes than JPEG and up to 30% smaller than PNG at comparable visual quality. Smaller images mean faster page loads, better Core Web Vitals scores, and improved Google search rankings — especially for e-commerce and blog sites.
Input: PNG, JPG/JPEG, WebP, GIF, BMP, TIFF, ICO, SVG (and HEIC on supported browsers). Output: WebP, JPG, PNG, AVIF, GIF, BMP.
Yes. ImageShift is fully responsive and works on Android and iOS browsers. Tap the upload area to select photos from your camera roll and convert them instantly.
For most web images, 80–85% quality gives an excellent balance between file size and visual quality. For hero images or photography, 85–90% is recommended. For thumbnails and icons, 70–75% is usually fine.
AVIF generally achieves 20–50% better compression than WebP, especially at lower quality settings. However, AVIF has slightly less browser support. For maximum compatibility choose WebP; for maximum compression on modern browsers, AVIF is the winner.

PNG to WebP Conversion: Why It Matters for Your Website

If you run a website, blog, or online store, the image formats you use directly affect your Google search rankings, page load times, and user experience. Google's Core Web Vitals now explicitly reward sites that load quickly — and images are almost always the biggest culprit in slow pages.

WebP is Google's open image format designed specifically for the web. It supports both lossy and lossless compression, as well as transparency (alpha channels) — something JPEG cannot do. Converting your PNG and JPG images to WebP can reduce file sizes by 25–34% without any visible quality loss.

How Does This Image Converter Work?

ImageShift uses the browser's built-in Canvas API and HTMLCanvasElement.toBlob() method to perform image conversion entirely on your device. Here's the process:

  1. Your selected image file is read using the FileReader API.
  2. It is drawn onto an off-screen HTML5 canvas at the original (or resized) dimensions.
  3. The canvas exports the pixel data as a new image in the chosen format at the specified quality level.
  4. The resulting Blob is converted to a download URL and delivered directly to your browser.

Because this all happens inside your browser tab, no image data is ever transmitted to any external server. This makes ImageShift one of the most privacy-respecting image converter tools available online.

WebP vs JPG vs PNG vs AVIF: Which Format Should You Use?

  • WebP — Best for web. Excellent compression, supports transparency and animation. Use for all web images where support is not an issue (it is supported by all modern browsers).
  • AVIF — Best-in-class compression, but slower to encode and limited support in older browsers. Use for cutting-edge performance where you serve modern browsers.
  • PNG — Best for design assets, logos, screenshots, and anything needing transparency or lossless fidelity. Largest file sizes.
  • JPG/JPEG — Widest universal compatibility. Good for photographs and real-world imagery where lossless quality is not required.
  • GIF — Only for simple animations; otherwise outdated. WebP animated is a superior alternative.

Tips for Getting the Best Results

  • Use 80–85% quality for WebP — you will rarely see any visible quality difference versus 100%, but the file size savings are significant.
  • Resize before optimizing — if your original is 4000×3000px but you only need 800×600px, use the resize feature to dramatically reduce the output file size.
  • Convert hero images first — these are typically the largest files on a page and have the most impact on load time.
  • Batch convert product photos — for WooCommerce, Shopify, and similar stores, bulk converting all product images to WebP at 82% quality is a quick win for SEO.