How to use Convert Image Format
Convert images between formats — JPEG, PNG, WebP, AVIF, BMP, TIFF, and GIF — entirely in your browser. No file size limit, no watermarks, no server upload. Batch-convert multiple images at once. Converting to WebP or AVIF can dramatically reduce file sizes for web use while maintaining visual quality.
- Upload one or more image files by clicking or using drag-and-drop.
- Select the target output format from the dropdown.
- For lossy formats (JPEG, WebP), set the quality level (75–90% recommended).
- Click "Convert" — all files are processed in parallel in the browser.
- Download individual files or all converted images as a ZIP archive.
Your data never leaves your device — 100% private processing.
Format comparison and migration guide
JPEG → WebP converts photos to a more efficient format while maintaining visual quality — recommended for all web images. PNG → WebP for UI graphics and screenshots with transparency reduces size by 20–30% while preserving lossless quality with transparency. PNG → JPEG converts transparent backgrounds to white and applies lossy compression — only appropriate if transparency is not needed. BMP and TIFF are uncompressed formats used in professional workflows; converting to PNG or JPEG dramatically reduces file size for everyday use without quality loss for typical images.
Color space and profile handling
Professional images may embed ICC color profiles (sRGB, Adobe RGB, P3) that ensure accurate color reproduction on calibrated displays. When converting formats, color profiles are preserved where supported (WebP, PNG, JPEG). Converting to formats that don't support profiles (GIF, BMP) may result in subtle color shifts on wide-gamut displays. For web use, sRGB is the standard color space — images in Adobe RGB or P3 may appear oversaturated on uncalibrated screens unless tone-mapped to sRGB before publishing.
Worked examples
JPEG photo to WebP
Inputs: 2 MB JPEG photo → WebP at quality 80
Result: Typically 25–35% smaller — varies by image
PNG logo to WebP (lossless)
Inputs: 400 KB PNG logo → lossless WebP
Result: Often 20–30% smaller, transparency preserved
Image format comparison
| Format | Compression | Transparency | Animation | Best for |
|---|---|---|---|---|
| JPEG | Lossy | No | No | Photographs, complex images |
| PNG | Lossless | Yes | No | Logos, screenshots, line art |
| WebP | Lossy or lossless | Yes | Yes | Modern web images and graphics |
| AVIF | Lossy or lossless | Yes | Yes | Next-gen web, smallest files |
Glossary
- ICC profile
- An embedded color space definition in an image file that ensures consistent color reproduction across devices.
- Alpha channel
- The transparency component of an image pixel, ranging from fully transparent (0) to fully opaque (255).
- EXIF
- Metadata embedded in image files by cameras, including orientation, GPS coordinates, and capture settings.
- sRGB
- The standard RGB color space for web and consumer devices — the safest color space for broad compatibility.
Related reading
Frequently Asked Questions
Why use Convert Image Format?
- Convert JPEG photos to WebP for 25–35% smaller files at equivalent visual quality
- Batch-convert multiple images to a single target format in one pass
- Preserve transparency when converting between PNG, WebP, and AVIF
- Eliminate unsupported BMP and TIFF files from modern web and email workflows
Common use cases
- Convert PNG screenshots to WebP before uploading them to a documentation site
- Batch-convert TIFF scans from a flatbed scanner to compressed JPEG for archiving
- Turn an AVIF download into a JPEG that Windows Photo Viewer opens without extra codecs
- Convert BMP exports from an older design tool to PNG for a web project asset folder
- Convert a GIF to WebP to keep animation while reducing the file size significantly
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