Image Converter: Convert JPEG, PNG & WebP Free Online
Convert images between JPEG, PNG, and WebP instantly in your browser — private, free, no upload needed.
Modern — best compression
Drop an image here or browse files
JPEG, PNG, WebP, GIF, BMP · up to 50 MB each
About the Image Converter
Conversion runs entirely in your browser using the HTML5 Canvas API. Drop in any number of images, pick JPEG, PNG, or WebP as the output, and adjust quality for the lossy formats. Every image downloads individually, or as a single ZIP once more than one is done, and none of it ever passes through a server. You're converting files locally, on your own device, the same way a native desktop app would, just without installing anything.
How it works
Each image loads into an off-screen canvas at its full original resolution, then the browser re-encodes that canvas into the format you picked. For JPEG and WebP output, the quality slider controls the encoder's compression level directly, so dragging it changes both the visual fidelity and the resulting file size. PNG output ignores the slider entirely, since PNG is lossless by design and always encodes at full quality regardless of the setting. Change the format or quality after conversion and every image already in the list automatically re-converts, so what you see in the download list always matches your current settings rather than a stale result from an earlier pass.
Format guide
JPEG works best for photos and works everywhere: every browser, every operating system, every printing service and photo lab built in the last twenty years. Lossy compression keeps file sizes small, but transparent areas turn white since JPEG has no alpha channel, and repeated re-saves degrade quality a little each time.
PNG is lossless, so it never throws away image data, and it supports a full alpha channel for transparency. That makes it the right choice for screenshots, logos, icons, and any graphic with sharp text or hard edges where JPEG artifacts would be obvious. The cost is a larger file than an equivalent JPEG or WebP.
WebP is Google's newer format and typically produces files 25 to 35 percent smaller than JPEG at the same visual quality, while also supporting transparency the way PNG does. Every current browser renders it natively, though a smaller set of older desktop apps and some print workflows still expect JPEG or PNG specifically.
Common use cases
Web developers use this to batch-convert a folder of product photos or blog images to WebP before deploying a site, trading a few minutes of conversion time for meaningfully faster page loads. Designers reach for it when a client hands over a PNG mockup that needs to become a JPEG for print, or the reverse, when a JPEG photo needs a transparent background added in an editor and has to become a PNG first. People preparing images for a form or upload widget that only accepts a specific format use it to sidestep a rejected upload without opening a full image editor for a single file.
Tips for best results
- 🧩Converting to JPEG from an image with transparency, add a background color first in an editor if a solid white fill isn't what you want, since JPEG will fill transparent pixels with white automatically.
- 🌐Choose WebP by default for anything going on a website. The compatibility gap that used to matter has closed for nearly every visitor.
- 🖨️Stick with PNG or high-quality JPEG for anything headed to print, since some print workflows don't accept WebP at all.
Batch conversion and downloads
Drop in a whole folder of mixed-format images and the tool queues each one individually, showing its input format and original size alongside a live status as it converts. Once two or more images finish, a single button zips the whole batch into one download instead of making you click through each result. If one file in a large batch fails to load, an error status appears next to that item specifically while the rest of the queue keeps converting normally, so a single corrupted or unsupported file doesn't stall the whole batch.
Supported input formats
The tool accepts any image your browser can decode natively, which covers JPEG, PNG, WebP, GIF, BMP, and SVG in practice. Animated GIFs convert using their first frame only, since the canvas-based conversion pipeline works on a single still image rather than an animation sequence. There's no hard file size limit imposed by a server, since nothing gets uploaded, but very large source images can be slow to process depending on how much memory your device and browser have available.
Related tools
To reduce file size after converting, use the Image Compressor. To enlarge a small image, the Image Upscaler scales up 2 to 4 times using Lanczos resampling. For iPhone HEIC photos that won't open on Windows, the HEIC Converter handles batch conversion.
Frequently Asked Questions
Are my images uploaded to a server?
No. Conversion runs entirely in your browser using the HTML5 Canvas API. Your images never leave your device and are never transmitted anywhere.
Is the Image Converter free?
Yes. There is no cost, no account, and no signup required. Every format and feature works without any payment.
Do I need an account to use it?
No account, no email, no login. Open the tool and use it.
Will converting PNG to JPEG lose transparency?
Yes — JPEG does not support transparency, so transparent areas are filled with white. Use PNG or WebP output to preserve transparency.
What input formats are supported?
Any image your browser can display — JPEG, PNG, WebP, GIF (first frame only), BMP, and SVG.
Is there a file size limit?
No server-side limit. Very large images may be slow depending on your device memory.