Convert Image
Convert between JPG, PNG, WebP, and other formats. Keep quality, change extension.
Convert images between JPG, PNG, WebP, AVIF, and other formats right in your browser. Every step runs locally using your browser's own canvas and codecs, so nothing is uploaded, queued, or stored on a server. Your photos never leave your device.
Picking the right format matters: JPG is universal but has no transparency, PNG is lossless with an alpha channel, WebP saves 25-35% over JPG, and AVIF squeezes files smallest of all. This tool lets you switch between them instantly and compare the results.
Drop image to convert
JPG · PNG · WebP · BMP · GIF
🔒 100% Browser-Based
Your image is processed entirely in your browser. Nothing is uploaded. Verify in DevTools → Network tab — zero outbound traffic with file content.
About Convert Image
Convert between JPG, PNG, and WebP with a quality control. Change formats for compatibility or smaller files without installing anything. Conversion is fully local.
How to use the Convert Image
- 1
Add your image
Drag a file onto the page or click to browse. The image loads into memory locally; no upload happens at any point.
- 2
Choose the output format
Select JPG, PNG, WebP, AVIF, or another target. For photos pick JPG or WebP; for logos or screenshots with sharp edges or transparency, pick PNG.
- 3
Set quality if available
For lossy formats (JPG, WebP, AVIF), nudge the quality slider. Around 80 is usually indistinguishable from the original at a fraction of the size.
- 4
Download
Click convert and save the new file. Re-run with a different format to compare file sizes before you commit.
Which format should you actually pick?
- JPG — best default for photographs going anywhere. Universally supported, but no transparency and visible artifacts at low quality.
- PNG — lossless, supports transparency. Ideal for logos, icons, screenshots, and line art, but large for photos.
- WebP — roughly 25-35% smaller than JPG at the same quality, supports transparency and animation. Supported in every modern browser.
- AVIF — the smallest files, often half the size of JPG, with wide color and transparency support. Decoding is slower and a few old apps still can't open it.
Why local conversion is safer and faster
Most online converters upload your file to a remote server, process it there, and hand back a link. That means your image sits on someone else's machine, at least temporarily. This tool does the opposite: the conversion happens entirely inside your browser tab, using the same image engine that renders web pages.
The practical upshots are real. There's no upload wait, so even large or numerous files convert as fast as your device can run. There's no file-size cap imposed by an upload limit. And sensitive images, ID scans, medical photos, private screenshots, never touch the internet.
Quick tips
- ✓Converting JPG to PNG will not recover quality already lost to JPG compression; it only stops further loss and adds transparency support.
- ✓For the web, export WebP at quality 75-82; the file is usually 30% smaller than an equivalent JPG with no visible difference.
- ✓Need transparency? JPG can't store it. Convert to PNG, WebP, or AVIF instead, or the background will flatten to a solid color.
- ✓AVIF wins on size but encodes slowly; for a one-off social post the savings rarely justify the wait versus WebP.
- ✓Keep a copy of the original. Each lossy re-encode (JPG to JPG, for example) degrades the image a little further.
Frequently asked questions
Which format should I choose?
JPG for photos, PNG for graphics/transparency, WebP for the smallest web files when your audience uses modern browsers.
Will I lose transparency converting to JPG?
Yes — JPG has no transparency, so transparent areas are filled (white by default). Use PNG or WebP to keep it.
Is anything uploaded?
No. Conversion runs in your browser; your image stays on your device.
Does converting change the image dimensions?
No. Format conversion keeps the same pixel width and height; only the encoding and file size change. Use a resize tool separately if you need different dimensions.
Will EXIF data like GPS location carry over?
Canvas-based conversion typically strips most metadata, including GPS and camera info. That's often a privacy benefit, but if you need EXIF preserved, this isn't the right tool.
Why is my converted file bigger than the original?
Usually because you converted a lossy photo (JPG) into a lossless format (PNG). PNG stores every pixel exactly, which is large for photographic content. Use WebP or JPG for photos instead.