ToolBirch

Batch Image Converter

Convert a whole batch of images into one chosen format.Image Tools

Drop your images here

JPG, PNG, WebP, GIF or BMP images

Up to 25 MB per file · up to 20 files

Output options

Your files are processed on this device. Nothing is uploaded to a server.

About this tool

When a whole folder needs the same treatment, per-file tools are slow. Drop mixed JPG, PNG and WebP files, choose one output format and quality, and every file is converted with progress shown per image.

How to use the Batch Image Converter tool

  1. Add mixed images. JPG, PNG and WebP files can be mixed freely in one batch.
  2. Choose format and quality. Every file is written in the chosen format. PNG is lossless; JPEG and WebP use the quality slider.
  3. Convert and download. Watch per-file progress, then download individually or as a ZIP.

Supported formats

Input

  • JPEG
  • PNG
  • WebP
  • AVIF and GIF (first frame)

Output

  • PNG
  • JPEG
  • WebP

Inputs are validated before anything is processed. Invalid values and unsupported files are rejected with a clear error instead of failing silently.

Frequently asked questions

What happens to transparent pixels?

When the output is JPEG they are flattened onto white. PNG and WebP keep the alpha channel.

Is the batch processed in parallel?

Sequentially, to keep memory predictable on phones. Progress per file is shown.

Can HEIC be an input?

Use the HEIC to JPG tool first, or add the HEIC files here if your browser cannot decode them — unsupported inputs are reported clearly.

How big can the batch be?

There is no file-count cap; memory is the practical limit.

Privacy

Every conversion happens in the browser; no file is transmitted.

No account is required and no file is ever uploaded. See the privacy policy for details about analytics and the limited data this site stores.

Known limitations

  • One shared output format per run.
  • HEIC input depends on the browser's decoder; convert those first with the dedicated tool.
  • Animated sources export the first frame only.

Related tools

Other free tools from the same collection.

Image CompressorReduce JPG, WebP and PNG file size with a live before/after readout.JPG to WebPShrink JPG photos into WebP, typically 25–40% smaller.PNG to JPGFlatten PNG images onto a solid background and encode as JPG.Image ResizerResize by exact pixels, percentage, or fit-within-bounds.