1
Choose an image
Add a supported source image. The tool detects the source format and prepares a local preview in your browser.
Convert Image
Convert images directly in your browser
Convert supported images between common formats without uploading your files to a processing server.
🖼️
Drop your images here
JPEG, JFIF, PNG, WebP, HEIC, HEIF, AVIF, SVG, BMP and TIFF
Your images never leave your device
Convert to
HEIC, HEIF, AVIF, SVG, BMP and TIFF are supported as input formats. HEIC, AVIF, BMP and TIFF output are encoded locally in your browser. SVG is rasterized when converted, and multi-page TIFF input currently uses the first image page.
85%
Higher quality usually produces a larger file.
REAL TEST RESULTS · EXAMPLE
Compare a photo converted from PNG to JPEG and WebP
The same mountain landscape is shown as an original PNG, two JPEG outputs and a WebP output. Compare the actual file sizes and inspect fine details without changing the 1448 × 1086 px resolution.
1448 × 1086 pxPNG → JPEG / WebPNo resizingMeasured files
Select a converted format
↔
Converted onlyOriginal only
Inspect fine details
Matched crops from the original and selected output. Look closely at flowers, textures and mountain edges.
Original PNG
WebP
Original PNG
3.31 MiB
1448 × 1086 px
WebP
488.6 KiB
Same image dimensions
Size reduction vs original
85.6% smaller
Results vary between images and settings
Verified conversion file sizes
| Format | Dimensions | File size | Size change |
|---|---|---|---|
| Original PNG | 1448 × 1086 px | 3.31 MiB | — |
| JPEG · smaller file | 1448 × 1086 px | 515.6 KiB | 84.8% smaller |
| JPEG · larger file | 1448 × 1086 px | 829.7 KiB | 75.5% smaller |
| WebP (selected) | 1448 × 1086 px | 488.6 KiB | 85.6% smaller |
Sizes in the table are measured from the original PNG and the actual JPEG/WebP files, not from the previews shown here. The two JPEG outputs have different file sizes; their precise encoder settings have not been supplied. The interactive photos and enlarged crops are separate, lightweight WebP previews and may introduce minor additional display artifacts. No full-resolution source image is automatically loaded or offered for download. Try the converter above with your own photos to compare format options; AVIF is supported by the tool but is not included in this measured example.
Choose the right image format for the job
Different image formats are useful for different reasons. JPEG is widely supported and efficient for photographs, PNG is useful for lossless graphics and transparency, WebP offers a strong balance between quality and file size, while newer formats such as AVIF or HEIC can be useful when storage efficiency matters.
This converter is designed for quick format changes without routing your image through a remote conversion service. Add a supported file, choose the output format and quality options that are available for that format, then download the converted copy. The original file on your device is not replaced.
How it works
2
Select an output format
Choose the format that matches your compatibility, transparency, quality or file-size requirements.
3
Convert and download
The browser creates the new file locally so you can download it without sending the original image to a conversion server.
Which image format should you choose?
- Use JPEG for photographs when broad compatibility and smaller files are more important than transparency.
- Use PNG for logos, UI graphics, screenshots or images that need a transparent background and lossless pixel data.
- Use WebP when you want a modern web-friendly format that can support both compression and transparency.
- Use AVIF when very efficient compression is useful and the software that will receive the image supports the format.
Frequently asked questions
Does converting an image always reduce its file size?
No. File size depends on the source content, output format, quality and compression method. Converting a JPEG to PNG can make the file larger, while converting some images to WebP or AVIF can reduce size.
Will transparency be preserved?
Transparency can only be preserved when the chosen output format supports an alpha channel. Formats such as PNG and WebP support transparency, while standard JPEG output does not.
Does conversion change the image dimensions?
The converter is intended to change file format rather than resize the image. If you need different pixel dimensions, use the Resize Image tool.
Why can some conversions take longer than others?
Formats such as HEIC and AVIF may require heavier browser-side decoding or encoding than JPEG or PNG. Processing time also depends on image resolution and the speed of the device.
Is the original file modified?
No. The tool creates a new converted file for download. Your original image remains unchanged on your device.
Helpful guide
JPEG vs PNG vs WebP vs AVIF
Compare the main image formats and choose the right one for photos, transparency, web publishing and compatibility.