What Is the Floan Image Converter Tool?
The image converter tool above changes pictures between PNG, JPG, WEBP and AVIF without installing software. Everything runs locally through the HTML5 Canvas API, so your photos are never sent to a server. Bloggers use it to shrink images for faster pages, students to meet upload limits, and shop owners to prepare product photos in bulk.
Why Convert Image Formats?
The right format affects page speed, storage and visual quality, and Google uses speed as part of its page experience signals. A product photo saved as a heavy PNG can be several times larger than the same photo as WEBP.
PNG vs JPG vs WEBP vs AVIF
| Format | Best for | Transparency | Size |
|---|---|---|---|
| PNG | Logos, screenshots, text graphics | Yes | Largest |
| JPG | Photos, email, wide compatibility | No | Medium |
| WEBP | Websites needing speed and quality | Yes | Small |
| AVIF | Maximum compression for modern browsers | Yes | Smallest |
PNG – sharp and lossless
PNG discards no data, which suits icons, logos and screenshots with crisp edges and transparent backgrounds.
JPG – the universal photo format
JPG uses lossy compression to keep photographs small. Almost every device, app and website accepts it.
WEBP – built for the web
Developed by Google, WEBP is typically 25–35% smaller than JPG at similar quality. Read the official WebP documentation for details.
AVIF – newest and smallest
AVIF often beats WEBP on size. Not every browser can encode it, so the tool tells you if yours cannot and suggests WEBP instead.
How to Use the Free Online Image Converter
- Tap the upload box, drag in your images, or paste from the clipboard.
- Choose the output format, size, max file size (80 KB by default) and quality.
- Press Convert images and compare the before and after sizes.
- Download single files or press Download all for one ZIP.
- Press Reset to clear everything and start again.
Key Features
- Bulk conversion with unlimited files and no sign-up
- Max file size limit (for example under 80 KB) with automatic compression
- Live file-size savings for every image
- Resize to 75%, 50% or 25% while converting
- Custom background colour for transparent PNG to JPG
- Private: nothing is uploaded
- Works on desktop, Android and iPhone
Common Use Cases
Website owners and bloggers
Converting images to WEBP before uploading them to WordPress cuts page weight and helps Core Web Vitals. Smaller pages load faster and keep visitors longer.
E-commerce and social media
Marketplaces often limit file size or format. Convert catalogue photos to JPG or WEBP, scale them down, and upload dozens at once.
Designers and developers
Keep PNG masters for transparency and export WEBP or AVIF versions for production. For more on serving modern formats, see web.dev’s guide.
Need more utilities? Browse the Floan Tools page, or read our blog for image optimisation and web performance guides.
Tips for the Best Results
Pick a sensible quality
For JPG, WEBP and AVIF, a quality of 75–90% usually balances size and clarity. Check the result at full size before publishing.
Avoid repeated lossy conversions
Each JPG or WEBP save loses a little detail. Always convert from the original file rather than from an already compressed copy.
Is It Safe to Use?
Yes. Unlike many converters, this tool never uploads your files. The browser decodes and re-encodes images on your device using the Canvas API, which makes it suitable for private photos and documents.
Frequently Asked Questions
Is this image converter tool free?
Yes. It is completely free, with no sign-up, watermark or conversion limit.
Are my images uploaded to a server?
No. Conversion runs entirely in your browser with the HTML5 Canvas API, so your files never leave your device.
Which formats can I convert to?
You can export PNG, JPG and WEBP everywhere, and AVIF in browsers that support encoding it. Input can be JPG, PNG, WEBP, GIF, BMP, SVG or AVIF.
Can I convert many images at once?
Yes. Add as many images as you like, convert them together and download each file or everything as one ZIP.
What happens to transparency when converting to JPG?
JPG has no transparency, so transparent areas are filled with a background colour you choose (white by default). PNG, WEBP and AVIF keep transparency.
Does it work on mobile?
Yes. The layout is responsive and works in Chrome, Safari, Firefox and Edge on Android, iPhone and desktop.
Conclusion
This free image converter tool from Floan converts, resizes and compresses images in seconds without risking your privacy. Try it above, then explore more free utilities on Floan’s tools page.