Image Format Converter
Convert between PNG, JPG, WebP, and BMP with quality control and resizing. 100% client-side — your images never leave your browser.
Lossy — smaller files, adjust quality below
75–85% is usually a good balance.
🔒 100% private: All conversion happens in your browser using the Canvas API. Your images never leave your device.
About Image Format Converter
Different image formats serve different purposes: PNG (lossless, supports transparency), JPG/JPEG (lossy, small for photos), WebP (modern, supports both), BMP (uncompressed, legacy), and ICO (Windows icons, favicons). Converting between formats is a common task — saving a screenshot as PNG for editing, converting a PNG logo to WebP for web performance, or making a JPG from a photo to reduce file size. This tool converts images between all these formats entirely in your browser using the Canvas API. It preserves transparency where supported, adds a white background for JPG (which has no alpha channel), and includes quality control for lossy formats. Batch conversion is supported.
How It Works
- Upload or drop one or more images (PNG, JPG, WebP, BMP, ICO).
- Choose the output format (PNG, JPG, WebP, or BMP).
- For JPG/WebP, set the quality level (1–100%).
- Optionally set a max width/height for resizing.
- Click Convert — download each converted image.
✨ Key Features
- ✓Convert between PNG, JPG, WebP, BMP
- ✓Quality slider for JPG/WebP (1–100%)
- ✓Batch conversion — multiple files at once
- ✓Preserves transparency in PNG/WebP
- ✓White background fill for JPG (no alpha)
- ✓Optional resize by max width/height
- ✓Before/after preview with file sizes
- ✓Download individual or all converted images
- ✓Handles input from PNG, JPG, WebP, BMP, ICO, GIF (first frame)
- ✓100% client-side — no data sent to any server
🎯 Common Use Cases
- →Converting PNG screenshots to JPG for smaller size
- →Converting JPG photos to WebP for web performance
- →Converting WebP images to PNG for editing
- →Creating JPG versions of transparent PNGs (with white background)
- →Preparing images for specific platform requirements
- →Converting legacy BMP files to modern formats
- →Batch-converting an image library
- →Making smaller versions of large images for email
💡 Advanced Tips & Pro Insights
- ▸WebP is 25–35% smaller than JPG at the same visual quality. Use it for web whenever possible.
- ▸PNG is lossless and supports transparency — use it for logos, icons, screenshots, and images with sharp edges.
- ▸JPG is lossy and does NOT support transparency. When converting a transparent PNG to JPG, this tool fills the background with white.
- ▸For photos: use JPG or WebP at 75–85% quality. For screenshots/text: use PNG or WebP at 90%+.
- ▸BMP is uncompressed and produces very large files — use it only for compatibility with legacy software.
Frequently Asked Questions
Is this image format converter free?▾
Yes, this image format converter is completely free with no signup, email, or usage limits.
Is my data safe?▾
Yes, 100% safe. All conversion happens in your browser using the Canvas API. Your images are never uploaded to any server.
Which formats can I convert between?▾
Input: PNG, JPG/JPEG, WebP, BMP, ICO, GIF (first frame). Output: PNG, JPG, WebP, BMP. SVG is not supported by the Canvas API for pixel conversion — use a dedicated SVG tool.
Will I lose quality when converting?▾
Converting to PNG is lossless. Converting to JPG or WebP is lossy — quality is controlled by the slider (75–85% is a good balance). Converting from JPG to PNG cannot restore lost detail — it just re-encodes.
What happens to transparency when converting to JPG?▾
JPG does not support transparency. This tool fills transparent areas with white. To preserve transparency, use PNG or WebP as the output format.
What is the best format for websites?▾
WebP for most images — it is 25–35% smaller than JPG at the same quality. For logos/icons that need transparency, PNG or WebP both work. For photos, WebP or JPG.
Can I convert multiple images at once?▾
Yes, upload multiple files and the same settings are applied to all. Each converted image is shown with its own download button, plus a "Download All" option.
Does it support animated WebP or GIF?▾
No. Only the first frame of animated images is converted. For animated formats, use a dedicated tool.