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Image Format Converter

Convert images between PNG, JPEG, WebP, AVIF, and BMP formats in your browser. Also supports SVG-to-raster conversion with quality, scale, and background color controls.

Drop image here or click to select

Supports PNG, JPG, WebP, GIF, BMP, SVG — max 20 MB

About Image Format Converter

Image Format Converter is a free online tool that converts images between PNG, JPEG, WebP, AVIF, and BMP formats entirely in your browser using the HTML5 Canvas API. You can also convert SVG code directly to any raster format by pasting the SVG markup. No files are ever uploaded to a server — everything is processed locally on your device, ensuring complete privacy. The tool supports quality control for lossy formats, custom background colors for transparency handling, scaling, and custom dimension output.

How to Use

  1. Upload an image file (PNG, JPEG, WebP, GIF, BMP, SVG) by dragging it into the drop zone or clicking to browse, or switch to the SVG Text tab and paste SVG code directly.
  2. Select the target output format: PNG, JPEG, WebP, AVIF, or BMP.
  3. Adjust the quality slider for lossy formats (JPEG, WebP, AVIF) — lower values produce smaller files.
  4. Optionally set a background color (important when converting transparent PNGs to JPEG).
  5. Choose a scale factor or enter custom dimensions if you need to resize during conversion.
  6. Click "Convert Image" and compare the original and converted images side by side.
  7. Click "Download Converted Image" to save the result to your device.

When to Use Which Format

PNG is ideal for images that require transparency, screenshots, and graphics with sharp edges or text — it uses lossless compression so quality is never degraded. JPEG is best for photographs and complex images where small file size matters more than pixel-perfect quality. WebP provides the best balance of quality and file size for web use — it supports both lossy and lossless compression and transparency, and is supported by all modern browsers. AVIF offers even better compression than WebP but browser support is still expanding. BMP is uncompressed and useful when you need raw bitmap data for legacy software or specific workflows.

Key Concepts

Essential terms and definitions related to Image Format Converter.

Raster Image

An image composed of a grid of pixels, where each pixel has a specific color value. Common raster formats include PNG, JPEG, WebP, and BMP. Raster images have a fixed resolution and become pixelated when scaled beyond their original size. They are best for photographs and complex images.

Vector Image (SVG)

An image described by mathematical shapes (paths, curves, text) rather than pixels. SVG (Scalable Vector Graphics) is the standard vector format for the web. Vector images can be scaled to any size without quality loss, making them ideal for logos, icons, and illustrations.

Lossy vs Lossless Compression

Lossy compression (JPEG, WebP lossy) permanently discards some image data to achieve smaller file sizes — the quality slider controls how much data is discarded. Lossless compression (PNG, WebP lossless) reduces file size without losing any image data, so the original can be perfectly reconstructed. Choose lossy for photographs where small artifacts are acceptable; choose lossless for graphics, screenshots, and images that will be edited further.

Alpha Channel

An additional channel in an image that stores transparency information for each pixel. A pixel with 0% alpha is fully transparent; 100% alpha is fully opaque. PNG, WebP, and AVIF support alpha channels. JPEG and BMP do not — transparent areas are filled with a solid background color during conversion.

Frequently Asked Questions

What image formats are supported?

The Image Format Converter supports PNG, JPEG, WebP, AVIF, and BMP as output formats. Input formats include PNG, JPEG, WebP, GIF, BMP, AVIF, and SVG. SVG can be converted to any raster format by either uploading an SVG file or pasting SVG code directly.

What happens to transparency when converting PNG to JPEG?

JPEG does not support transparency (alpha channel). When converting a transparent PNG to JPEG, the transparent areas are filled with a background color. You can choose white, black, or any custom color using the Background Color option. If you need to preserve transparency, use PNG or WebP as the output format.

Is my image uploaded to a server?

No. All conversion happens entirely in your browser using the HTML5 Canvas API. Your images never leave your device, making this tool safe for sensitive or proprietary images.

What is the difference between WebP and AVIF?

Both WebP and AVIF are modern image formats designed for the web. WebP was developed by Google and offers 25–35% smaller files than JPEG with broad browser support. AVIF (based on the AV1 video codec) achieves even better compression — typically 20% smaller than WebP — but browser support is still expanding. Use WebP for maximum compatibility; use AVIF if you target modern browsers and want the smallest possible files.

Can I convert SVG to PNG at high resolution?

Yes. Use the scale option (2x, 3x, etc.) or set custom dimensions to render SVG at any resolution you need. Since SVG is vector-based, it scales perfectly to any size. This is useful for generating high-DPI icons, social media images, or print-ready graphics from SVG source files.

Why is my converted file larger than the original?

Converting from a lossy format (JPEG) to a lossless format (PNG) or increasing the scale will typically increase file size. PNG stores every pixel without quality loss, so it naturally produces larger files for photographic content. For smaller files, use JPEG or WebP with a lower quality setting.

Troubleshooting & Technical Tips

Common errors developers encounter and how to resolve them.

Conversion to AVIF fails or produces blank image

AVIF encoding support varies by browser. Chrome and Firefox support AVIF encoding, but Safari may not. Try using WebP as an alternative, or switch to a supported browser. You can test browser support by converting a small test image first.

Converted image appears with black background instead of transparent

The target format (JPEG or BMP) does not support transparency. Change the output format to PNG or WebP to preserve transparency, or select a specific background color (white, black, or custom) in the Background Color section.

SVG text not rendering in converted image

SVG text elements require the specified font to be available on the system. If the SVG uses a custom or web font that is not loaded, text may render in a fallback font or not appear at all. Convert fonts to paths in your SVG editor (e.g., Object > Path in Inkscape) before conversion for guaranteed rendering.

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