Image Converter

Convert images between PNG, JPG, WebP and BMP in your browser, in bulk — free converter.

Images

About

About the Image Converter

Converts one or more images between PNG, JPEG, WebP and BMP formats, entirely in your browser.

Web developers use it to convert a batch of images to WebP for faster page loads, while online sellers use it to match the exact format a marketplace requires. It's one of many free image tools on Toolapt, and like every tool here, it's free to use with no sign-up and no limit on how many times you run it.

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Guide

Using the Image Converter

  1. 1

    Step 1

    Drag and drop or click to upload one or more images.

  2. 2

    Step 2

    Choose the format to convert from (or leave it as any format) and the format to convert to.

  3. 3

    Step 3

    For JPEG or WebP output, set the quality level.

  4. 4

    Step 4

    Click "Convert" — each converted image downloads automatically.

  • Converts between PNG, JPEG, WebP and BMP in any direction
  • Handles multiple images in one batch, not just one at a time
  • Adjustable quality setting (1–100) for JPEG and WebP output
  • Writes BMP files directly in JavaScript — no library needed for that format
  • Your images are converted locally and never uploaded to a server
  • Free to use, with no limit on how many times you run it
  • Fully responsive, so it works just as well on a phone as on a desktop

Web developers

Web developers use the Image Converter for converting a batch of images to WebP for faster page loads.

Anyone with an old BMP file

Anyone with an old BMP file uses the Image Converter for turning it into a modern, widely supported format.

Content creators

Content creators use the Image Converter for converting screenshots to JPEG to shrink file size before sharing.

Online sellers

Online sellers use the Image Converter for converting product photos to the exact format a marketplace requires.

Popular conversions

JPG PNG JPG WebP JPG BMP PNG JPG PNG WebP PNG BMP WebP JPG WebP PNG WebP BMP BMP JPG BMP PNG BMP WebP

Examples

Image Converter examples

3 worked examples

01

Transparent PNG to WebP

Upload a 1.10 MB PNG cutout with Convert to set to WebP and quality 90, to download mug-cutout.webp at 211 KB — about 81% smaller, with the transparent background kept.

02

BMP to PNG

Upload a 6.22 MB uncompressed scan.bmp and convert to PNG to get scan.png at 3.92 MB, a lossless format switch with no quality change.

03

Batch of 5 JPEGs to WebP

Drop in 5 camera JPEGs (9.35 MB in total) with quality 80 and Convert to set to WebP, and all 5 are converted in one go to 3.49 MB, each listed with its old and new size and its own Download button.

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FAQ

Frequently asked questions

Quick answers to common questions about the Image Converter.

What does the Image Converter do?

It converts one or more images between PNG, JPEG, WebP and BMP formats, entirely on your own device.

Is the Image Converter free to use?

Yes. It's free, with no sign-up, no watermark and no limit on how many times you use it.

Is my image safe when I use this tool?

Yes. Every image is converted directly in your browser — nothing is uploaded to a server.

Can I convert several images at once?

Yes. Drop in as many images as you like and they'll each be converted in the same batch.

What does the quality setting do?

For JPEG and WebP output, it controls the compression level — higher quality means a sharper image but a larger file.

Why is BMP handled differently?

BMP is a simple, uncompressed format, so it's written directly byte-by-byte in JavaScript rather than needing the browser's built-in encoder, which PNG, JPEG and WebP use instead.

Can I use the Image Converter on my phone?

Yes. The page is fully responsive and works on mobile, tablet and desktop browsers alike.

Does the Image Converter have any limitations?

Conversion quality and speed depend on your browser's own image codecs; very large batches are limited by how much memory your browser can use, not a fixed file count.

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