High Quality Image Converter
Convert any image — JPG, PNG, WEBP, HEIC, GIF, BMP or AVIF — to JPG, PNG or WEBP at maximum quality, and upscale to a higher resolution if you need it.
- Free
- No sign-up
- Batch + ZIP
- No uploads
How to use the High Quality Image Converter
- 1
Add your images
Drop any image files onto the box above, browse, or paste with Ctrl+V. Mix formats freely.
- 2
Pick format, quality and resolution
Choose JPG, PNG or WEBP, set the quality (95 by default), and optionally upscale 2× or 4× for a higher resolution.
- 3
Download
Save each converted image or download them all as a ZIP.
Why use a high quality image converter?
Many online converters quietly compress your images to save their own bandwidth. This converter runs on your device, defaults to a quality of 95 and never shrinks your image unless you ask, so you keep every detail. PNG output is completely lossless.
JPG, PNG, WEBP, HEIC (iPhone), GIF, BMP and AVIF are all accepted as input. Animated GIFs use their first frame.
JPG (also called JPEG) is the most widely used photo format. It uses lossy compression to keep files small and works everywhere, but it does not support transparency and loses a little quality every time it is re-saved.
PNG is a lossless format that keeps every pixel exactly and supports transparent backgrounds. It is ideal for logos, icons, screenshots and graphics, but photos saved as PNG are often very large.
WebP is a modern image format created by Google. It supports both lossy and lossless compression plus transparency, and typically produces files 25–35% smaller than JPG at the same visual quality. All modern browsers support it.
Why people use ReadySetConvert
100% private
Images are processed on your device and never uploaded anywhere.
Lightning fast
No waiting for uploads or queues — results appear instantly.
Batch friendly
Convert dozens of images at once and download them as a ZIP.
Free forever
No sign-up, no watermarks, no daily limits.
Convert images without losing quality
Choose PNG for a truly lossless conversion that keeps every pixel, or JPG / WEBP at quality 95–100 for a much smaller file that looks identical. Unlike many free online image converters, nothing is uploaded and your images are never downscaled behind the scenes.
Higher resolution image converter
Need a bigger image for printing, a banner or a store listing? Pick 2× or 4× under Resolution to upscale with high-quality smoothing — for example from 1000 × 1000 to 4000 × 4000 pixels. Upscaling increases pixel dimensions and reduces visible jaggedness, but it cannot add real detail that the camera never captured, so start from the sharpest original you have.
Every format in, JPG, PNG or WEBP out
JPG / JPEG
Best for photos and maximum compatibility. Use quality 90+ for high quality.
PNG
Lossless with transparency. Best for screenshots, logos, text and graphics.
WEBP
Smallest files at high quality, with transparency. Best for websites.
HEIC, AVIF, GIF, BMP
Accepted as input and converted to any of the three formats above.
More image converters
Frequently asked questions
Which output format gives the highest quality?
PNG is lossless, so it keeps every pixel exactly. For smaller files with no visible loss, use JPG or WEBP at a quality of 90–100.
Can I convert an image to a higher resolution?
Yes. Choose 2× or 4× to upscale with high-quality smoothing. Upscaling makes the image larger in pixels, but it cannot invent detail that was never captured.
Is this high quality image converter tool free?
Yes. It is completely free with no sign-up, no watermarks and no limits on the number of images.
Are my images uploaded to a server?
No. Your images are processed entirely inside your browser, so they never leave your device. That makes it private and very fast, even for large files.
Can I convert many images at once?
Yes. Drop or select as many images as you like. Each one is processed in turn, and you can download them one by one or all together as a ZIP file.
Does it work on iPhone, Android and Mac?
Yes. It runs in any modern browser on phones, tablets and computers. Nothing needs to be installed.