Do my images get uploaded when I use this image converter?

No. The PlainBench image format converter runs entirely in your browser. Images are processed locally and never leave your device or get uploaded to a server.

Which image formats can I convert between?

The tool supports converting common formats such as JPG, JPEG, PNG, WEBP, and SVG. It can also export to AVIF in browsers that support AVIF encoding via the Canvas API.

Is there a limit to how many images I can convert?

There is no artificial limit inside the tool. Practical limits come from how many images your browser can comfortably process in one batch on your device.

Is this image converter really free?

Yes. The PlainBench image format converter is 100% free to use. There are no logins, subscriptions, watermarks, or timed trials.

Image Format Converter – Free JPG, PNG, WEBP, SVG, AVIF

Use this free image format converter from PlainBench to quickly convert JPG to PNG, PNG to WEBP, SVG to PNG, and more. Everything runs in your browser – no uploads, no watermarks, no sign-ups.

Convert images between JPG, PNG, WEBP, SVG, and AVIF (3 steps)

Drop your images, pick an output format, tweak quality/resize options, and download everything as new files. Perfect for web images, thumbnails, social posts, screenshots, and older-device photos.

1. Add your images

Drag and drop image files or click the box to pick them from your device. All conversions happen locally.

Drag & drop images here
or click to choose JPG, PNG, WEBP, SVG, AVIF, and more

No images selected yet.

2. Choose output format and options

Pick a target format and optionally adjust quality and size for web-friendly images.

Output format

Quality (for JPG / WEBP / AVIF)

85%

70–85% is usually ideal for the web: smaller files, still sharp.

Resize images (optional)

Helpful when your images are huge. The tool preserves aspect ratio and will not upscale.

Max width (px)

Max height (px)

Background for JPG (no transparency)

Used when converting transparent PNG/WEBP/SVG into JPG.

3. Convert and download your new images

Click convert, watch the progress, then download your files one by one or all at once.

No conversions yet. Add images and click Convert images.

Note: some browsers may ask you to confirm multiple downloads.

✓ 100% local processing Your images never leave your device. This tool uses the HTML5 Canvas API to convert formats directly in your browser.

What this image format converter is built for

A no-nonsense image converter designed for real-world tasks:

• JPG ⇄ PNG: make screenshots transparent or export photos as high-quality PNGs.
• PNG ⇄ WEBP / AVIF: create smaller, modern formats for faster-loading websites.
• SVG ⇄ raster: quickly turn SVG icons into PNG or WEBP for apps that need bitmaps.
• Batch conversion: convert whole batches of images without uploading them anywhere.

How to convert JPG to PNG

1) Add your JPG files. 2) Choose PNG as the output format. 3) Leave quality as-is (PNG is lossless). 4) Click Convert images and download your new PNG files.

How to make smaller web images

Choose WEBP or AVIF, set quality around 75–85%, and optionally limit the max width/height to your site's actual display size.

About SVG output

When you pick SVG as the output, the converter creates an SVG wrapper that embeds your image as a high-quality PNG inside the SVG file. This keeps compatibility with tools that require an .svg extension, even for raster originals.

Does this upload my images?

No. Images are processed directly in your browser via the Canvas API. Nothing is sent to a server.

Why doesn’t AVIF always work?

AVIF support depends on your browser. If your browser cannot encode AVIF, the tool will fall back to PNG for that file and label the result clearly.

Can I keep my original resolution?

Yes. Leave the Resize images option unchecked and the converter will keep your original width and height.

More PlainBench tools:

Try the Image Compressor, Word Counter, PDF Page Editor, and Bulk File Renamer.