Batch Convert — Change Format in Bulk
Your files never leave your device
Drop multiple images
or click to browse
Supports: JPG, PNG, WebP, GIF, BMP
Convert a Batch to One Output Format
Select multiple browser-decodable images, choose JPEG, PNG, or WebP, and apply the same encoder setting to the batch. Vizua processes the files locally and creates unique output names when different source files would otherwise collide.
What the Conversion Preserves
Format conversion starts from the raster rendered by the browser. It does not preserve animation, source compression settings, metadata, color profiles, layers, or every format-specific feature. JPEG output replaces transparency with white. PNG uses lossless coding for the rendered raster, while JPEG and WebP use the selected lossy quality.
File Size Is an Outcome, Not a Promise
A different format or lower quality can produce a smaller result, but no setting guarantees savings for every image. Content, dimensions, source encoding, browser encoder, and metadata all affect the comparison. Review representative outputs before converting an important archive.
Browser and Device Limits
Files are not sent to Vizua’s image-processing server. The page may still request required assets and other site features. Conversion runs sequentially in the browser, and large decoded images or long batches can exhaust available memory. Use smaller groups when necessary.
Frequently Asked Questions
How many images can I convert?
Vizua does not promise a fixed file count. Browser memory, decoded dimensions, file sizes, and device performance determine the practical batch limit.
Can I set the quality?
Yes. JPEG and WebP expose a 1–100 encoder-quality slider. The scale is encoder-specific and does not guarantee a particular visual result or file size. PNG uses lossless coding for the rendered raster.
What formats are supported as input?
The drop zone accepts browser-recognized image files, including common JPEG, PNG, WebP, GIF, and BMP variants. Actual decoding support depends on the browser; animation and metadata are not preserved.
What you can do with Batch Convert — Change Format in Bulk
Convert supported image batches to JPG, PNG, or WebP in your browser. Choose format and quality, inspect results, and download a ZIP.
Batch Convert — Change Format in Bulk is designed for quick, repeatable work in a modern browser. The controls on this page let you prepare the result without installing software or creating an account.
How to use Batch Convert — Change Format in Bulk
- Select or drop the file you want to process, or enter the information requested by the tool.
- Review the available settings before processing, especially format, dimensions, quality, color, or other details that affect the output.
- Inspect the result, download the new file, and keep the original unchanged in case you need another version.
Private by design
Your files never leave your device. All processing happens locally in your browser.
Tips for better results
- Start with the cleanest source available; a small, blurry, or heavily compressed file contains less detail to preserve.
- Check dimensions and format before downloading so the result matches the site, app, printer, or platform where you will use it.
- For large files, close unnecessary tabs and test one representative file before processing a full batch.
- Open the downloaded result once before sharing it or replacing an original.
Where Batch Convert — Change Format in Bulk fits in a workflow
Use Batch Convert — Change Format in Bulk for one-off adjustments or as a preparation step before publishing, sharing, archiving, or continuing the edit in another application. When batch processing is available, validate the settings on a small sample first and then apply them to the remaining files.