Image Format Converter
Convert images between PNG, JPEG, and WebP formats
Input Information
Result
Image Format Converter converts images between PNG, JPEG, and WebP formats directly in your browser. No server upload required - all processing happens locally.
Choose the right format for your needs: PNG for transparency and lossless quality, JPEG for small file sizes with photos, and WebP for the best of both worlds.
Term Glossary
- PNG
- A lossless image format that supports transparent backgrounds. Ideal for logos, graphics, and screenshots.
- JPEG
- A lossy image format suited for storing complex images like photos at small file sizes. Does not support transparency.
- WebP
- A modern image format by Google supporting both lossy and lossless modes, 25-35% smaller than JPEG at the same quality.
- Lossy/Lossless Compression
- Lossy compression reduces size by sacrificing some quality, while lossless compression keeps the original quality intact.
- 1
Upload an image
Select or drag and drop the image file to convert. All processing happens locally in your browser.
- 2
Choose the output format
Choose the target format: PNG, JPG, or WebP.
- 3
Convert
Adjust the quality if needed, then press convert to produce the image in the new format.
- 4
Download
Download the converted image for your use.
Example 1 — Reducing size from PNG to JPG
A 1200×800px photo at 2.5MB as PNG typically drops to roughly 300–400KB when converted to JPG at quality 85. For photos that don't need transparency, converting to JPG significantly improves web loading speed.
Example 2 — WebP vs PNG size comparison
The same logo at 500KB as PNG becomes roughly 350KB in lossless WebP, and even smaller in lossy mode. WebP is on average 25–35% smaller than PNG or JPEG at the same quality, making it a common recommendation for modern websites.
Format Comparison:
PNG
Lossless compression, supports transparency. Best for graphics, logos, and screenshots.
JPEG
Lossy compression, adjustable quality. Best for photographs and complex images.
WebP
Modern format with both lossy and lossless modes. 25-35% smaller than JPEG at same quality.
Tips:
- PNG to JPEG conversion will remove transparency (filled with white background).
- Lower quality settings significantly reduce file size for JPEG and WebP.
- WebP is supported by all modern browsers but not by older versions of Safari.
- All conversions happen in your browser - no data is uploaded to any server.
QWhich image formats are supported?
The converter supports PNG, JPEG, and WebP. PNG is lossless with transparency, JPEG uses lossy compression for photos, and WebP supports both lossy and lossless modes at roughly 25–35% smaller than JPEG at equal quality. Other browser-supported formats are also handled internally.
QHow does quality relate to file size?
In lossy JPEG and WebP, higher quality values produce larger files and lower values produce smaller ones. Dropping from quality 90 to 85, for example, noticeably shrinks size with little visible difference. A 80–90 quality range is a good balance for photos.
QIs browser-side conversion private?
Yes. All conversion happens locally within your browser, and images are never uploaded to or transmitted to any server. You can safely convert sensitive documents, personal photos, or signature images.
QCan I convert very large images?
Yes, but it depends on browser memory and device performance. Very large images process more slowly and may run out of memory. Consider downscaling to a few thousand pixels on the long side before converting.
QWhat happens to a transparent background when converting PNG to JPG?
JPEG does not support transparency, so transparent areas are filled with white (or a chosen background color). If you need to keep the transparency, use PNG or lossless WebP instead.