Tool comparison
Background Remover vs Image Converter
Background Remover and Image Converter are both conversion tools. They serve related purposes but are optimised for different tasks — understanding the distinction helps you choose the right one for your workflow.
Bottom line
Background Remover targets subject isolation — use it when you need a transparent or clean background. Image Converter is format-first — use it when changing file format for compatibility or performance without altering image content.
What each tool does
Background Remover
Background Remover uses an AI model running entirely in your browser to detect and remove image backgrounds, returning a transparent PNG. The model is based on U-2-Net, a neural network architecture trained specifically for salient object detection — it identifies the main subject in an image and masks out everything else. Processing happens via WebAssembly (ONNX Runtime Web), which means the AI runs at near-native speed directly in your browser tab. No image is ever sent to a server — all processing is local, making it suitable even for confidential or proprietary photos. The output is always a 32-bit RGBA PNG with a transparent alpha channel where the background was, ready to be placed on any color or design without white halos or fringing.
Open Background Remover →Image Converter
Image conversion is the process of re-encoding a digital image from one file format to another, changing the container, compression algorithm, and colour depth according to the target format's specification. Different image formats make different trade-offs: PNG uses lossless compression and supports full alpha transparency, making it ideal for screenshots, icons, and graphics with sharp edges. JPEG uses lossy compression optimised for photographs, achieving small file sizes at the cost of some detail. WebP is a modern format developed by Google that supports both lossless and lossy compression as well as alpha transparency — it is typically 25–35% smaller than JPEG or PNG at equivalent quality, and all modern browsers support it. AVIF (AV1 Image File Format) is the newest of the major formats, achieving roughly 50% smaller files than JPEG at equivalent visual quality at the cost of longer encoding times. TIFF is a lossless, uncompressed format used in print and photography workflows. GIF supports up to 256 colours and is primarily used for animations. This tool converts between PNG, JPEG, WebP, AVIF, TIFF, and GIF, and can rasterise SVG files to any of those formats. Conversion runs on the server using the Sharp library (libvips) — your image is sent over HTTPS and is not stored.
Open Image Converter →Side-by-side comparison
| Feature | Background Remover | Image Converter |
|---|---|---|
| Category | conversion | conversion |
| Primary purpose | Remove image backgrounds instantly with AI — returns a transparent PNG | Convert images between PNG, JPEG, WebP, AVIF, TIFF, GIF, and SVG formats |
| Inputs | image | image, from, to, quality |
| Outputs | image | image, format, width, height, size_bytes |
When to use each
Use Background Remover when…
How to remove the background from a product photo
Create a transparent-background PNG of a product for e-commerce listings, catalogs, and marketing assets.
How to remove the background from a headshot photo
Create a transparent or white-background version of a professional headshot for LinkedIn, CVs, and company pages.
Use Image Converter when…
How to convert PNG to WebP online
Reduce PNG file size by converting to WebP format for faster web page loading.
How to convert JPEG to AVIF online
Shrink photo file sizes dramatically by converting JPEG images to the AVIF format.
Frequently asked questions
- Is my image uploaded anywhere?
- No. The AI model runs entirely in your browser using WebAssembly. Your image never leaves your device — not even for the initial model download, which is just the model weights, not your photos.
- Why does the first run take longer?
- The AI model weights (~40 MB) are downloaded from a CDN on first use and cached by your browser. Subsequent runs skip the download entirely and start processing immediately.
- What is the maximum file size?
- 3 MB. This is set by the Vercel free tier request body limit. For larger images, use the API with a self-hosted instance — there is no size cap when self-hosted.
- Does conversion affect image quality?
- Lossless formats (PNG, TIFF) preserve every pixel exactly. Lossy formats (JPEG, WebP, AVIF) reduce file size by discarding perceptually insignificant detail. The quality slider controls this trade-off: 80 is a good default for web images, 90+ for print-quality exports, and 60–70 for thumbnails where small file size matters more than sharpness.