An image format converter changes the file type of an image while preserving its visual quality. Convert PNG to WebP for smaller file sizes, JPEG for compatibility, or back to PNG for lossless editing — all in your browser without uploading files.
Drop images here or click to upload
PNG, JPG, WebP, GIF, BMP — up to 20 images
Output Format
Quality (0.90)
How to Convert Image Formats Online
This image format converter runs in your browser — no server upload, no privacy risk. Convert single images or batch-convert up to 20 at once.
Step 1: Upload Images
Click the upload area or drag and drop one or more images. You can upload up to 20 images in a single batch. Supported input formats include PNG, JPEG, WebP, GIF, and BMP.
Step 2: Choose Output Format and Quality
Select PNG for lossless output (best for graphics and screenshots), JPEG for the smallest file size for photos, or WebP for the best compression with wide browser support. For JPEG and WebP, the quality slider controls the tradeoff between file size and visual quality.
Step 3: Convert and Download
Click Convert All to process all queued images. Each converted image shows a before/after file size comparison so you can see the savings. Download images individually or use Download All to get them all at once.
When to Use Each Format
Use PNG for logos, screenshots, and images that need transparency. Use JPEG for photographs where some quality loss is acceptable — a 3MB PNG photo typically becomes a 300KB JPEG at quality 0.85 with no visible difference. Use WebP for web assets where you want the best of both worlds: good compression and transparency support.
FAQ
Does converting images upload them to a server?
No. Conversion happens entirely in your browser using the HTML5 Canvas API. Files are read locally and the converted image is generated client-side. Nothing is uploaded.
What is the difference between PNG, JPEG, and WebP?
PNG is lossless (no quality loss) and supports transparency, but produces larger files. JPEG uses lossy compression for smaller files but loses some quality. WebP offers the best compression with optional transparency and is widely supported in modern browsers.
Can I convert multiple images at once?
Yes. Click 'Add More Images' to add up to 20 images to the batch queue. All images are converted with the same format and quality settings, and you can download them individually or all at once.
Will converting PNG to JPEG lose the transparency?
Yes. JPEG does not support transparency. Any transparent areas in the original PNG will be filled with white when converting to JPEG. Use PNG or WebP if you need to preserve transparency.
What quality setting should I use for JPEG?
A quality of 0.85 to 0.92 gives a good balance of file size and visual quality for most photos. Use 0.95+ for images that need to look perfect, or 0.7 for thumbnails where file size matters more.
Is this tool free?
Yes, completely free. No account, no watermarks, no file size limits. All processing runs in your browser.