Image Format Changer

100% private

JPG, PNG, WebP, AVIF and iPhone HEIC photos, converted on this device and never uploaded.

Drop your images here JPG, PNG, WebP, AVIF, GIF, BMP or HEIC — up to 60 at once. They stay on your device: we never see them, and there is nowhere for them to be sent.

image

Your images

1 Convert to

Which format do you need?

Not sure? JPG is the safe answer for photos and anything you’re uploading to a form. Choose PNG if the picture has a transparent background you need to keep.

2 Quality

How much detail do you want to keep?

The picture keeps its original width and height whatever you pick here — this only changes how hard the file is squeezed.

Working…

Advanced options

Maximum width (pixels)

Maximum height (pixels)

The picture is fitted inside this box and keeps its shape. It is never enlarged and never cropped.

Behind transparent areas

A JPG cannot store transparency, so see-through parts have to become a solid colour. White suits documents and logos on light pages; black suits dark ones. PNG and WebP keep the transparency instead, and ignore this.

Added to the file name

Checking usage…

Step by step

How to change an image’s format

Four steps, no account, no email address, no watermark on the result.

Add your images

Drag them anywhere onto this page, or press Choose images. Nothing is sent when you do — the browser simply gets permission to read the files off your disk.

Pick the format you need

JPG for photos and upload forms, PNG when transparency or perfectly sharp text matters, WebP when you want the smallest file for a website.

Press Convert

The progress runs inside the button. A JPG or PNG is near-instant; an iPhone HEIC takes a few seconds each, because it has to be decoded in software.

Download

Save one image with the arrow under its thumbnail, or take the whole batch at once as a ZIP. Converting more than one? The ZIP is far quicker.

Private by design

Why this converter can’t leak your photos

Almost every free image converter uploads your picture to a server, converts it there and gives you a link back. If that photo was a passport scan, a signed contract or a picture of your children, a stranger’s machine has now held a copy. This one works differently, and you can verify that yourself in about ten seconds.

Zero uploads

The converter is downloaded to your browser once. From then on it reads your images straight from your own disk. They never enter a network request, so there is no copy anywhere for us to keep, lose or be compelled to hand over.

Your location comes off

Photos carry hidden EXIF data — GPS coordinates, the camera’s serial number, the exact second it was taken. Converting rebuilds the picture from its pixels alone, so all of that is left behind. Handy before posting a photo of your own front door.

No account

No sign-up, no email address, no daily limit, no watermark stamped across your picture, and no paid tier that unlocks the format you actually came for.

To be precise about what does leave your device — because “100% private” is easy to say and worth checking. Two things, neither of them your image:

1. When a conversion finishes, this page sends one anonymous message to our counter saying “image-format-changer was used”. No picture, no file name, no dimensions, nothing identifying you. It exists so the usage number above is a real one rather than something we invented.
2. Google Analytics records the page view and that a conversion happened, the same as on every other page of this site. We don’t send it anything about your images. You can block it and the tool works exactly the same.

Your photos are in neither. They never enter a network request at all — and unlike a promise, that is something you can check. Turn off your wifi, reload this page and convert an image anyway. It still works. No upload-based converter can pass that test. The one exception is worth naming: HEIC files need a decoder that is fetched the first time you use one, so that first HEIC needs a connection. Every other format works offline from the start.

At a glance

Tool specifications

Reads	JPG, PNG, WebP, AVIF, GIF, BMP, HEIC and HEIF
Writes	PNG, JPG and WebP
Not supported	SVG, TIFF, ICO and RAW camera files as input; AVIF as output — no browser can write one
Batch	Up to 60 images at once, downloaded singly or as one ZIP
Maximum size	150 MB in total; a warning above 25 MB
Dimensions	Kept exactly as they were, unless you set a maximum under advanced options
Rotation	Sideways phone photos are turned upright automatically
Metadata	EXIF, GPS and camera data are removed by any real conversion — a re-encode cannot carry them
Same format in and out	Passed through untouched, metadata included, rather than needlessly re-encoded
Animation	An animated GIF becomes a single still image, its first frame
Where processing happens	In your browser, on your device — nothing is uploaded
Works offline	Yes, once the page has loaded. HEIC needs a connection the first time only
Sign-up	Not required, not offered
Watermark	None
Price	Free

Questions

Changing image formats, answered

Are my images uploaded anywhere?

No. The conversion runs entirely inside your browser using code that was downloaded to your device. Your pictures are read from your own disk and never placed in a network request. The simplest proof: disconnect from the internet and convert one — it still works.

Which formats can I convert between?

You can bring in JPG, PNG, WebP, AVIF, GIF, BMP and HEIC, and take away PNG, JPG or WebP. Animated GIFs are the one thing to watch: none of the output formats here animate, so you get the first frame as a still image. SVG, TIFF and RAW camera files aren’t supported — browsers can’t open them the way this tool works.

Can you really convert HEIC photos from my iPhone?

Yes, in any browser — not just Safari. HEIC is the format iPhones use by default, and Chrome, Firefox and Edge can’t open it because of the patents on the video codec inside. This page carries its own HEIC decoder so it works everywhere. It is downloaded the first time you convert a HEIC, which is why that first one needs a connection and takes a few seconds; the rest are quicker.

Will converting make the picture look worse?

Converting to PNG never loses anything — it is lossless, so the result is pixel-for-pixel identical. Converting to JPG or WebP re-compresses the image, and doing that repeatedly to the same picture slowly softens it. At the default “High” setting a single conversion is not something you can see. The width and height never change unless you ask for a maximum under advanced options.

Why did my transparent PNG turn white when I made it a JPG?

Because a JPG has no way to store transparency — every pixel must be a solid colour. Rather than let the see-through parts come out black, which is what most converters do, this one fills them with white. You can switch that to black under Advanced options. If you need the transparency kept, convert to PNG or WebP instead, both of which can hold it.

Does converting remove the GPS location and camera details?

Yes, all of it, whenever a conversion actually happens. Photos carry hidden EXIF data: where they were taken to within a few metres, which camera or phone took them, its serial number and the exact time. Converting rebuilds the file from the pixels alone, so none of that survives. One exception worth knowing: if you feed in a JPG and ask for a JPG, there is nothing to convert, so the file is handed straight back untouched with its metadata intact — the tool says so when that happens. To strip the data from a JPG, convert it to PNG. If you needed the metadata kept, keep a copy of the original, because this tool cannot preserve it.

Can I convert to AVIF?

Not here. AVIF files can be read by this tool, so converting an AVIF to JPG or PNG works fine — which is what most people want, because their software won’t open AVIF. Writing one is different: no browser can create an AVIF, so doing it in a page like this would mean shipping a large video encoder and taking several seconds per image. WebP gets you most of the file-size benefit today and is supported far more widely.

Is there a limit on size or how many at once?

Sixty images at a time, and 150 MB in total. Neither is an artificial cap of the kind paid converters use — they are the point past which your browser tab runs out of memory, and stopping there is better than crashing and losing the lot. For very large batches, do them in a few goes.

Keep it handy

Save it, share it, or tell us what’s missing

Come back to it

Bookmark the page, or pin it to your saved tools so it sits at the top of the tools list on this device.

Something not right?

If an image wouldn’t open, a conversion came out wrong, or a format you needed isn’t here, tell us. The form opens with the tool already filled in, so you only have to describe what happened.

Give feedback on this tool

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