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Bulk Image Converter
Convert and resize many images at once, then download them all as a ZIP. No uploads, no signup — every file is processed privately on your own device.
Convert images in bulk — the fast way
Converting photos one by one is tedious. This bulk image converter lets you drop a whole folder's worth of images, convert them all to the same format (JPG, PNG, or WebP), optionally shrink them to a maximum width, and download the lot as a single ZIP — in one pass.
How to batch convert images
- Drop or select multiple images at once (hold Ctrl/Cmd or Shift in the picker). Add more any time.
- Choose the output format and, if you want smaller files, a max width and quality.
- Click Convert all, then Download ZIP to get every converted image in one archive.
Frequently asked questions
Are my images uploaded?
No. Every image is decoded, resized, and re-encoded with the browser's <canvas>, and zipped locally with the open-source JSZip library. Nothing is uploaded — there's no server and no account.
How many images can I convert at once?
There's no hard limit, but very large batches use more memory since everything is held in your browser. A few dozen photos at a time is comfortable on most devices.
Can I batch convert HEIC (iPhone) photos here?
This bulk tool handles PNG, JPG, WebP, GIF, and BMP. For iPhone HEIC photos, use the dedicated HEIC to JPG converter.