MB Networks
IMG-04 · Convert
Convert image format
Upload any image and convert it to PNG, JPEG, or WEBP. Nothing leaves your device.
Image
Could not read that file as an image.
Choosing between PNG, JPEG, and WebP
PNG is lossless and supports transparency — the right choice for screenshots, logos, and anything with sharp edges or text. JPEG is lossy, has no transparency support, and is well-suited to photos where its compression artifacts are least noticeable. WebP supports both lossy and lossless modes plus transparency, generally beating both older formats on file size at equivalent quality, with the tradeoff being slightly less universal support in older software.
What actually happens during conversion
Converting from a format with transparency (PNG, WebP) to one without (JPEG) flattens transparent areas to a solid background color, since JPEG has no concept of an alpha channel at all — that's a real, visible change worth previewing before committing, not a bug in the conversion.
Why did my transparent PNG turn out with a white background as a JPEG?
JPEG doesn't support transparency at all — converting a PNG or WebP with a transparent background to JPEG has to flatten that transparency onto a solid color (usually white), since there's no alpha channel for JPEG to represent it in. This is expected behavior, not a conversion error.
Is WebP actually better than PNG and JPEG?
For file size at equivalent visual quality, generally yes — WebP supports both lossy and lossless compression plus transparency, and typically beats both PNG and JPEG on file size for the same visual result. The tradeoff is marginally less universal support in older browsers and some legacy software, worth checking if that's a real constraint.
Does converting formats reduce image quality?
Only if you convert to a lossy format (JPEG or lossy WebP) — that step discards some detail permanently. Converting between lossless formats (PNG to lossless WebP) preserves full quality.
Related tools
Image
Round Image Corners
Round the corners of any image by a pixel radius, with a transparent background outside. Runs entirely in your browser — nothing is uploaded.
Open →Image
Image to Base64
Convert any image to a Base64 data URI for embedding directly in CSS or HTML. Runs entirely in your browser — nothing is uploaded.
Open →Image
Compress Image
Shrink an image's file size with a live quality slider. See the output size update as you drag. Runs entirely in your browser — nothing is uploaded.
Open →Image
Crop Image
Crop any image by dragging a selection, or snap to common ratios like 1:1, 16:9, and 4:3. Runs entirely in your browser — nothing is uploaded.
Open →Image
Add Padding to an Image
Add padding around any image — PNG, JPEG, GIF, WEBP, BMP, SVG. Choose the amount, color (including transparent), and output format. Runs entirely in your browser.
Open →Image
Resize Image
Resize any image by exact pixels or percentage, with optional aspect-ratio lock. Runs entirely in your browser — nothing is uploaded.
Open →All processing runs locally in your browser · No image is ever uploaded