Are my images uploaded to a server?

No. Decoding, resizing and encoding happen inside your browser using a background worker. The file is read from your device, converted locally, and the result is saved from your browser's memory. Nothing is transmitted.

Which formats can I convert?

Input: anything your browser can display, including PNG, JPEG, WebP, GIF, BMP, AVIF and, on Safari, HEIC. Output: PNG, JPEG, WebP and, where the browser supports encoding, AVIF.

Which quality setting should I use?

80 is the sweet spot for photos: file size drops by 60–90 % compared with PNG and the difference is invisible at normal viewing sizes. Use 90–95 for print or archival copies, and 60–70 for thumbnails and previews.

Is there a file size or file count limit?

There is no upload limit because there is no upload. The only limit is your device's memory. The default maximum size of 4096 px on the longest side keeps even 100-megapixel photos safe on phones; you can clear it to keep the original dimensions.

Does converting to JPEG remove transparency?

JPEG has no alpha channel, so transparent areas are flattened onto a white background. Choose PNG or WebP if you need to keep transparency.

Is EXIF metadata kept?

No. The output is re-encoded from pixels, so camera metadata, GPS location and embedded thumbnails are removed. Orientation is applied before conversion so the image looks the same.

Convert images in your browser

Files never leave your device. Decoding, resizing and encoding run in background workers on your own CPU.

Drop images here or click to browse

PNG, JPEG, WebP, GIF, AVIF, HEIC where the browser can decode them

About this tool

Convert is a free online image converter that runs entirely in your web browser. It changes images between PNG, JPEG, WebP and AVIF, resizes them by their longest side and compresses them with a quality you choose. Because the work happens on your device, there is no upload, no waiting in a queue and no copy of your photo on anyone's server.

Drop one image or a hundred. Conversions run in parallel across your CPU cores, each one in a separate worker, and every finished file gets its own download button. Large photos are decoded directly at the target size, so a 50-megapixel RAW export becomes a 4096-pixel WebP without ever filling memory.

Output formats are detected from your browser's own encoders. Every modern browser can write PNG, JPEG and WebP; AVIF appears only where the browser supports encoding it, so the list you see is always accurate for your device.

How it works

Drop images onto the page or click to choose them.
Pick the output format and, for lossy formats, the quality.
Optionally set a maximum size in pixels for the longest side.
Click Save on each finished file to download it.

Looking for a different conversion? Try PNG to WebP, JPG to WebP, WebP to PNG, Compress image or DOCX to PDF.

Frequently asked questions

Are my images uploaded to a server?: No. Decoding, resizing and encoding happen inside your browser using a background worker. The file is read from your device, converted locally, and the result is saved from your browser's memory. Nothing is transmitted.
Which formats can I convert?: Input: anything your browser can display, including PNG, JPEG, WebP, GIF, BMP, AVIF and, on Safari, HEIC. Output: PNG, JPEG, WebP and, where the browser supports encoding, AVIF.
Which quality setting should I use?: 80 is the sweet spot for photos: file size drops by 60–90 % compared with PNG and the difference is invisible at normal viewing sizes. Use 90–95 for print or archival copies, and 60–70 for thumbnails and previews.
Is there a file size or file count limit?: There is no upload limit because there is no upload. The only limit is your device's memory. The default maximum size of 4096 px on the longest side keeps even 100-megapixel photos safe on phones; you can clear it to keep the original dimensions.
Does converting to JPEG remove transparency?: JPEG has no alpha channel, so transparent areas are flattened onto a white background. Choose PNG or WebP if you need to keep transparency.
Is EXIF metadata kept?: No. The output is re-encoded from pixels, so camera metadata, GPS location and embedded thumbnails are removed. Orientation is applied before conversion so the image looks the same.