Convert WebP to JPG without uploading anything

WebP is the better format almost everywhere — except wherever an old editor, a print shop or an upload form insists on .jpg. Drop a WebP in and get a JPG back, converted on your own device.

  • Nothing is uploaded
  • Opens in older software
  • Batch conversion
  • Unlimited & free

Drop your images here

or paste from the clipboard ·

JPG · JPEG · PNG · WebP · AVIF · HEIC · GIF · BMP — no file count limit

Compression settings

Applied to every image
Strategy

Auto measures each image: it encodes a test pass at several quality levels, scores the result against the original, and keeps the smallest file that still clears a ~40 dB fidelity floor.

Output format
Advanced options

Need exact dimensions or a centre crop instead of a cap? The batch image resizer does that.

Sharpening after resize

Auto applies a halo-free unsharp mask only when an image is scaled below 82%.

When a batch finishes

Generated in your browser by a synth — no audio file is downloaded, and it stays silent when a batch finishes in a couple of seconds.

Processing engine

WASM codecs are fetched from a public CDN on first use and give slightly smaller files. Every fallback still works offline.

Why you are probably here

WebP won the browser war years ago — every current browser displays it. What it did not win is everything else: a client's legacy CMS, the photo counter at a print shop, a government form that whitelists .jpg by extension, an older editing tool that shows a broken file icon instead of your picture. The file is fine; the destination is not. Converting to JPG is the compatibility move.

What you give up, stated plainly

WebPJPG
File sizeSmallerUsually larger — expected
TransparencyFull alpha channelNone — flattened onto white
AcceptanceEvery current browserUniversal, including old software
Re-savingCosts a little each timeCosts a little each time

Two rows deserve emphasis. The JPG will usually come out larger — that is the WebP compression you are trading away for compatibility, not a fault in the conversion. And if the WebP has transparent areas, JPG cannot keep them: they are flattened onto white. If you need transparency to survive, WebP to PNG is the conversion that keeps it.

How the conversion is done here

Your WebP is decoded once and encoded once to JPG — one generation of loss, not a re-compression spiral. The engine runs the same auto quality search as the main compressor: it keeps the lowest quality whose measured fidelity clears a perceptual floor, so the output is not blindly squashed to a preset.

Everything runs locally in your browser tab. There is no upload endpoint on this site, so the file never leaves your device.

Batch conversion

Drop a whole folder in and the files convert in parallel background workers. On a phone the finished JPGs can be handed to the system share sheet so they go straight into your photo library.

Related conversions

If the destination turns out to accept modern formats after all, JPG to WebP is the trip back and it shrinks the file. For pictures that must keep transparency, WebP to PNG is the lossless route.

Frequently asked questions

Will the JPG be larger than my WebP?

Usually yes — WebP compresses more efficiently than JPG at the same visual quality, and that advantage is what you are trading away for compatibility with older software. The conversion is honest: the JPG you get is the best JPG the engine can produce at its measured fidelity floor.

What happens to transparency in the WebP?

JPG has no alpha channel, so transparent areas are flattened onto white. If the transparency matters, convert to PNG instead — PNG stores a full alpha channel and the conversion is lossless.

Is converting WebP to JPG lossy?

JPG is a lossy format, so yes — one generation of loss. The image is decoded once from your WebP and encoded once at high fidelity; it is not re-compressed twice. Keep your WebP as the master and convert the copy you publish.

Why did the file get bigger if nothing was added?

JPG's encoder is simply less efficient than WebP's. Bytes are not a measure of information — the same pixels take more room in JPG. The upside is that the result opens in software that has never heard of WebP.

Are my images uploaded to a server?

No. This is a static site with no upload endpoint. The conversion happens in your browser, on your own hardware.