Image Format Converter
Convert multiple images between JPG, PNG, WebP, and AVIF in seconds
Choose or drag multiple images
PNG, JPG, WebP, AVIF, GIF, BMP — process as many files as you need
Fast Processing
All processing happens in your browser
100% Private
Your images never leave your device
No Limits
Process unlimited images for free
About Format Converter on Picy
Picy's free Image Format Converter lets you convert multiple images between PNG, JPG, WebP, and AVIF in bulk. Speed up your website and prepare assets for social media or print with fast, client-side batch conversion that keeps your files 100% private.
How to Use the Format Converter
Select Multiple Photos
Drag and drop any number of PNG, JPG, WebP, or AVIF files into the upload box, or click to browse your files.
Choose Target Output Format
Select your desired destination format (PNG for transparency, WebP for web performance, JPG for universal compatibility, or AVIF for maximum compression).
Convert and Download in Bulk
Click 'Convert All' to process the entire queue locally in parallel, then download individual converted files or grab them all.
Why Choose Picy Format Converter?
Multi-File Batch Queue
Convert dozens of images at once without waiting for individual uploads or tedious manual repetition.
Modern WebP & AVIF Support
Easily upgrade legacy JPGs and PNGs to modern formats recommended by Google PageSpeed Insights.
Alpha Transparency Preservation
Converts transparent PNGs to transparent WebPs seamlessly without introducing black or white background artifacts.
100% In-Browser Privacy
Your images never leave your computer. Processing occurs locally using browser Canvas and encoding APIs.
Adjustable Quality Level
Fine-tune lossy compression quality when converting to JPG and WebP to reach exact target file sizes.
Zero Usage Fees
Unlimited batch conversion with no account registration, subscriptions, or forced watermarks.
Image Format Comparison & Recommendations
| Parameter / Preset | Specification | Recommended Use |
|---|---|---|
| WebP | Best All-Rounder | 25-35% smaller than JPG; supports transparency and universal modern browser support |
| AVIF | Highest Compression | Next-gen codec; up to 50% smaller than JPG; ideal for bandwidth-sensitive web pages |
| PNG | Lossless / Transparency | Best for UI screenshots, sharp logos, icons, and graphics requiring transparent backgrounds |
| JPG / JPEG | Universal Compatibility | Supported across all legacy software, printers, emails, and operating systems |
Frequently Asked Questions
Why should I convert my images to WebP?
WebP delivers 25% to 35% smaller file sizes compared to JPG at equivalent visual quality, while also supporting alpha transparency like PNG. Converting your website imagery to WebP boosts Google PageSpeed scores and speeds up page load times.
Will converting PNG to JPG lose transparency?
Yes, because the JPG format does not support transparency (alpha channels). When converting a transparent PNG to JPG, transparent areas are filled with a white background. If you need transparency, convert to WebP instead.
Can I convert multiple images at the same time?
Yes! Picy's Format Converter allows you to select or drag & drop dozens of images simultaneously and convert them all in a single batch.
Are my photos uploaded to any servers during conversion?
No. Picy converts your files completely on your device using client-side JavaScript. Your images never touch our servers, ensuring complete privacy.
What formats can I convert between?
You can convert between PNG, JPG/JPEG, WebP, and AVIF in any direction.
Related Tools & Guides
Explore more free utilities and tutorials from Picy.
Image Compression
Compress your converted files to minimize byte size.
Image Resizer
Scale dimensions to match exact display pixel targets.
Image Crop Tool
Crop photos into custom rectangles, squares, or circles.
Best Image Formats Guide
Learn when to use WebP, AVIF, PNG, or JPG.