Convert between JPG, PNG, WebP, and AVIF formats
WebP is usually the best choice — it offers excellent compression and is supported in all modern browsers. Use PNG for transparency, JPG for maximum compatibility, AVIF for cutting-edge size reduction.
JPG and WebP conversions are lossy by default — some quality loss is expected. PNG is lossless. AVIF offers excellent lossy compression.
Yes, images up to 20 MB are supported.
Yes. Files are sent over HTTPS and deleted within 1 hour.
An image converter changes a picture from one file format to another — for example JPG to PNG, PNG to WebP, or HEIC to JPG. Different formats are good at different things: JPG is small and universal for photos, PNG supports transparency and sharp graphics, and WebP and AVIF are modern formats that offer excellent quality at much smaller sizes. Converting lets you use the right format for the job, or change a file into something a particular app or website will accept.
Choosing the right format matters more than people realize. JPG is ideal for photographs where small size matters. PNG is best for logos, screenshots, and anything needing transparency. WebP and AVIF deliver the same quality as JPG or PNG at a fraction of the size, which is why modern websites prefer them. ConvertDox converts between all of these formats in your browser-facing workflow, processing securely and deleting your file within minutes, with no watermark.
Convert JPG or PNG images to WebP or AVIF to make your website load faster without losing quality.
Convert a JPG to PNG when you need a transparent background for a logo or graphic.
Convert HEIC or WebP images to JPG so they open in apps that don't support newer formats.
Convert large PNG photos to JPG or WebP to dramatically reduce file size.
Convert images to a format your print service requires.
Switch to the format a specific website, app, or upload form will accept.
Yes, completely free with no signup and no watermark added to your images.
You can convert between JPG, PNG, WebP, and AVIF. For HEIC files specifically, our HEIC to JPG tool is purpose-built.
Use JPG for photos and broad compatibility, PNG for graphics and transparency, and WebP or AVIF for the smallest size on modern websites.
Converting to a lossy format like JPG involves some compression. Converting to PNG is lossless but produces larger files. The tool aims to preserve quality.
Yes. Your image is uploaded securely, converted, and automatically deleted from our servers within minutes. We never store or share your files.
For multiple files, use our Batch Image Converter to convert them together.