Images & files
Convert image formats without uploading your image.
Choose a static JFIF/JPEG, BMP, GIF, AVIF, PNG, or WebP image, then export it as PNG, JPEG, or WebP. Compare the real generated bytes before downloading. The browser performs the conversion locally and the tool checks file signatures instead of trusting extensions.
- Static, single-image files
- Runs entirely in your browser
- Verified PNG, JPEG, or WebP output
Source & settings
Choose what to convert.
Browser-only processing. The selected file and generated output stay on this device unless you choose to share them.
Verified result
Compare the actual files.
The tool checks the source header before decoding and verifies the generated Blob before offering a download.
Choose a static JFIF or JPEG, BMP, GIF, AVIF, PNG, or WebP image to begin.
Format guide
Choose for the image—not from habit.
| Output format | Useful for | Important tradeoff |
|---|---|---|
| PNG | Interface graphics, screenshots, and transparency | Lossless output can be larger for photographs |
| JPEG | Photographs when broad compatibility matters | Lossy and cannot preserve transparent pixels |
| WebP | Modern web images, including transparent artwork | Encoder behavior and quality interpretation vary by browser |
Import JFIF/JPEG, BMP, static GIF, static AVIF, PNG, or WebP. JFIF is handled as JPEG; BMP, GIF, and AVIF are input-only and must be exported as PNG, JPEG, or WebP. AVIF decoding depends on support in your browser.
Canvas export redraws the visible pixels and normally leaves embedded EXIF, XMP, and other source metadata behind. JPEG and quality-controlled WebP are lossy, so converting them is not pixel-identical. This tool preserves decoded dimensions but does not resize or batch-process. Animated and multi-image files are rejected instead of silently converting only one frame.
The HTML standard allows a browser to return PNG when a requested encoder is unavailable. Plainview Tools checks both the returned Blob media type and its file signature; if either differs, the download is blocked instead of being mislabeled.
Primary sources
Browser behavior you can verify.
Reviewed August 23, 2026. Browser encoders can change, so the tool verifies each generated file at runtime and links to the standards behind that behavior.