What is an Image Converter?
An image format converter changes how your file is saved — for example JPG to PNG or WebP to JPG — without desktop software. Use it to fix compatibility, reduce file size, or prepare assets for the web.
Free Image Converter – Convert JPG, PNG, WebP & More Online
Convert JPG to PNG, PNG to WebP, BMP to JPG, and 20+ more formats — free, instant, no signup needed. Try it now — 100% private, works in your browser.
100% free No signup required Your images stay private Works in your browser
About This Image Converter
NanoImage's free online image converter lets you convert image formats in your browser — no signup, no upload limits. Change JPG to PNG, PNG to WebP, BMP to JPG, GIF to PNG, and more. Batch convert up to 20 files with quality control, optional EXIF removal, and instant download. 100% private — files never leave your device.
JPG vs PNG vs WebP – Which Format to Choose?
JPG is best for photos and smaller files. PNG keeps transparency and sharp edges. WebP balances quality and size for modern websites. Pick the output that matches how you will share the image.
How to Convert Image to High Resolution
This tool converts format and compression, not pixel count. To convert image to HD or high resolution, export your file here, then use our Upscale Image tool to enlarge with sharper detail.
Convert BMP, TIFF, GIF – Rare Formats Explained
When your browser supports BMP, TIFF, or GIF input, you can export to JPG, PNG, or WebP. BMP and TIFF often become much smaller as JPG; GIF frames can move to PNG or WebP for web use.
Convert JPG to PNG (Preserve Transparency)
JPG to PNG is useful when you need a lossless copy or transparency for logos and UI assets. Note: JPG has no transparency — only areas you add in other editors will stay transparent in PNG.
Convert PNG to JPG (Reduce File Size)
PNG to JPG shrinks large screenshots and photos for email or social posts. After converting, use Compress Image if you need an exact KB or MB target.
Convert Image to WebP (Optimize for Web)
WebP often cuts page weight versus JPG or PNG. Convert image to WebP for blogs, stores, and apps — or open our Convert to WebP page for a focused workflow.
Convert BMP to JPG (Smaller File Size)
BMP files are often huge. Converting BMP to JPG makes them easier to share while keeping good visual quality for everyday photos.
How to Convert Images Online (Free & Instant)
- Upload your images (JPG, PNG, WebP, BMP, GIF, TIFF where supported) — up to 20 files.
- Choose the output format: JPG, PNG, or WebP, and set quality.
- Review file sizes, then click Convert Images.
- Download single files or a ZIP of all converted images.
FAQ: Convert Image Online Free
How do I convert an image to JPG for free?
Upload your image, choose JPG as the output format, adjust quality if needed, and click Convert Images. No signup required — everything runs in your browser.
How do I convert an image to high resolution online?
Upload your image to NanoImage, then use the Upscale Image tool to increase resolution. For format changes at full quality, use 100% quality setting when converting to PNG or WebP.
What formats can I convert BMP to?
You can convert BMP to JPG, PNG, or WebP in your browser. JPG is best for smaller photos; PNG keeps transparency when supported.
How do I convert a raw image to JPG?
If your browser can open the RAW or DNG file, upload it and export as JPG. For unsupported RAW files, open them in desktop software first, then convert here.
Does converting to WebP reduce file size?
Often yes. WebP typically produces smaller files than JPG or PNG at similar visual quality — great for websites and apps.
Can I convert image to icon (ICO) format?
ICO export is not supported yet. Convert to PNG first, then use a dedicated icon tool if you need .ico files.
Will transparency be kept?
PNG and WebP can keep transparency. JPG does not support transparency — transparent areas become solid color.
Will conversion affect quality?
JPG and WebP use compression you can control with the quality slider. PNG is lossless but may produce larger files.