Batch Image Format Converter

This batch image format converter runs entirely in your browser — no software to install, no files uploaded to any server. All conversions happen locally on your device, keeping your images private and your workflow fast.

Supported Formats

The tool accepts a wide range of input formats including PNG, JPG/JPEG, WebP, BMP, GIF, TIFF, SVG, ICO, AVIF, and HEIC. Output formats include JPG, PNG, WebP, BMP, GIF, ICO, and TIFF, covering virtually all everyday use cases.

Key Features

• Batch Processing: Drag and drop or select multiple images at once. Set the target format once and convert them all in a single click.
• Quality Control: For lossy formats like JPG, WebP, and TIFF, a 1–100% quality slider lets you balance file size against image fidelity.
• Background Color Fill: When converting images with transparency (e.g. PNG) to formats that don't support it (e.g. JPG, ICO), choose a custom background color to prevent transparent areas from turning black.
• Max Width Scaling: Optionally resize images to common widths (480, 640, 800, 1280, 1920px) during conversion, great for bulk resizing.
• Flexible Naming: Keep the original filename or switch to sequential numbering (001, 002…) for organized output.
• ZIP Download: Once converted, download all files at once as a ZIP archive, or save them individually with per-file download buttons.

Common Use Cases

• Web developers converting PNG assets to WebP to improve page load performance;
• E-commerce teams standardizing product images to JPG with controlled file sizes;
• Designers batch-converting HEIC photos (shot on iPhone) to JPG for broader compatibility;
• Creating ICO files for website favicons from existing PNG images.

How to Use

1. Select your target format (JPG, WebP, PNG, etc.) from the format bar at the top;
2. Adjust quality, background color, max width, and naming options as needed;
3. Click the upload area or drag your images into it — multiple files supported;
4. Click Start Convert and wait for the progress bar to complete;
5. Download files individually or click Download All to get a ZIP archive.

FAQ

Q: Are my images uploaded to a server?
A: No. All processing happens locally in your browser. Your images never leave your device.

Q: Why does HEIC conversion fail in Chrome?
A: HEIC decoding depends on native browser support. Safari handles it well; Chrome has limited HEIC support. Try using Safari, or pre-convert HEIC files to JPG first.

Q: The background turned black after converting PNG to JPG — how do I fix it?
A: PNG files may have transparent areas. When converting to JPG (which has no transparency support), set the background color option to white or any color of your choice before converting.

Q: Is there a limit on how many images I can convert at once?
A: There's no hard limit, but for best performance we recommend processing no more than 50 large images at a time to avoid high browser memory usage.