one engine, many formats
Convert PNG, JPG and WebP online
Switch between PNG, JPG and WebP for web publishing, email attachments, or design handoffs. OneImageTool converts files entirely in your browser using the canvas API.
Transparent PNGs and WebPs are flattened to a white background when you export JPG. Lossy formats include a quality slider so you can balance size and clarity.
supported formats
What you can convert
Phase 1 supports common raster formats in and PNG, JPG, or WebP out.
PNG
Lossless with transparency — ideal for graphics, logos, and UI assets.
JPG
Smaller photos without alpha — quality slider controls compression.
WebP
Modern web format with transparency or lossy compression at smaller file sizes.
three steps
How to convert an image online
Upload
Drop PNG, JPG, WebP, GIF, or BMP. The tool detects the source format automatically.
Choose output
Pick the target format and adjust quality for JPG or WebP. Preview updates instantly.
Download
Save the converted file with the correct extension — no watermark, no account.