What an Image Converter Actually Changes
An image file is three things stacked together: a container (the file format), a codec that describes how the pixels were compressed, and the pixels themselves. An image converter unpacks the pixels from one container and writes them into another, compressing them the way the new format expects.
This image converter reads each file in your browser, draws its pixels onto a canvas and encodes the result as JPG, PNG or WebP. Whatever goes in, what comes out is a brand-new file with a single, clean job: show the picture.
Container, codec, pixels
Most of the time you only care about the container, because that decides where the file can go. A website builder that rejects HEIC, a form that only takes JPG, an email client that shows WebP as an attachment instead of inline: all of these are container problems, and converting solves them.
Converting is not upscaling
A converter moves pixels; it does not invent them. A 640-pixel thumbnail is still 640 pixels after conversion, and a blurry photo stays blurry. If an image looks soft or blocky before you convert it, it will look the same afterwards, just in a different format.
JPG, PNG or WebP: Choosing the Output
Three formats cover nearly every everyday need. The right one depends on what the image is and where it is going, and two questions settle it for most images: is it a photograph, and is it going on a website?
When JPG is the right answer
JPG is the format almost everything accepts: phones, cameras, printers, upload forms, office software, ten-year-old browsers. It compresses photographs very well by discarding detail the eye barely notices. Choose JPG for photos you are emailing, printing, uploading to a form or sharing with someone whose software you do not know. At the default 90% quality the difference from the original is hard to spot.
When PNG is the right answer
PNG is lossless: every pixel comes back exactly as it went in. That makes it the safe choice for screenshots, diagrams, logos, scanned text and anything with sharp edges or flat colour, where JPG's compression leaves fuzzy halos around letters. PNG also keeps transparency. The trade-off is size: a photograph saved as PNG is usually several times larger than the same photo as JPG.
When WebP is the right answer
WebP does both jobs. In lossy mode it competes with JPG; Google's own measurements put lossy WebP at 25–34% smaller than a comparable JPG. In lossless mode it replaces PNG, at about 26% smaller, and it supports transparency in both modes. Every current browser displays WebP, which makes it the natural choice for images on a website. Outside the browser support is patchier, so for a file you are sending to someone, JPG or PNG is still the safer bet.
Lossy or lossless WebP?
Use lossy WebP for photographs and lossless WebP for screenshots, graphics and anything you would otherwise save as PNG. Switch on Lossless WebP in the settings to keep every pixel exact.
What You Lose When You Convert
Converting is usually painless, but four things can quietly go missing. Knowing them in advance saves a second round of conversions.
Detail that earlier saves already discarded
Every time an image is saved as JPG (or lossy WebP), the encoder throws away a little more detail. One save is invisible; ten saves start to show as blocky skies and smeared edges. Converting a JPG to PNG never restores detail the JPG already discarded; it only stops further loss. If you need to edit an image repeatedly, convert it to PNG once, work on the PNG, and export to JPG at the very end.
Transparency
JPG has no transparency at all. When a transparent PNG, WebP or GIF becomes a JPG, its transparent pixels have to be filled with something. This converter fills them with white by default; you can pick black or any colour under Background for transparent areas. PNG and WebP output keep transparency untouched.
Animation
JPG and PNG hold a single picture, and this converter writes still WebP. An animated GIF or animated WebP becomes its first frame. The file list flags animated images so you are not surprised.
Colour beyond sRGB
Recent iPhones and many cameras capture photos in a wide colour space (Display P3). Browsers draw images in standard sRGB, so very saturated reds and greens can come out slightly less vivid. For screens and the web this is rarely noticeable; for colour-critical print work, use desktop software that preserves the colour profile.
Converting Photos From Your Phone
Phones produce the two problems people most often bring to an image converter: files that will not open, and photos that open sideways.
HEIC photos from an iPhone
iPhones have saved photos as HEIC since 2017. It is an efficient format, but most Windows software, many websites and most browsers outside Safari cannot display it. Drop HEIC files here and they are decoded in your browser and saved as JPG, PNG or WebP. If you want HEIC-specific options, the HEIC to JPEG and HEIC to PNG converters are built around them.
Photos that come out sideways
Phones do not rotate the pixels when you hold them upright. They store the picture as the sensor saw it and add an orientation tag that tells viewers to turn it. Converters that ignore the tag produce sideways or upside-down photos. This one applies the tag before converting, so a portrait photo stays portrait, and the output needs no tag at all.
Live Photos and bursts
A HEIC file can hold several images, as Live Photos and burst shots do. The converter takes the primary image, which is the still you see in your photo library.
Files That Lie About Their Format
A file's extension is a label anyone can change; its first bytes are what the format actually is. Every image format starts with a short signature: JPG begins with the bytes FF D8 FF, PNG with 89 50 4E 47, WebP with RIFF followed by WEBP.
Why extensions go wrong
Websites often serve WebP or AVIF to browsers that support them while keeping the old .jpg address, so a "JPG" you saved is really a WebP. Chat apps and cloud drives rename files when they recompress them. Some software saves a JPG but writes .png on the end. The file still opens in a browser, which reads the bytes, yet an upload form that checks the extension, or an editor that trusts it, can reject it or show an error.
What this image converter does about it
It reads the first bytes of every file and goes by those, not by the name. When the two disagree, the file list says so, for example Named .jpg, actually WebP, and the converted file gets the extension that matches its real format. Converting a mislabelled file to the format you need is also the quickest way to make a stubborn upload form accept it.
Metadata: What Stays and What Goes
Photos carry more than pixels. EXIF metadata records the camera model, lens, exposure, the date and time the photo was taken and, on most phones, the GPS position where you were standing.
What is removed
Re-encoding an image through a canvas writes new pixels and nothing else, so camera, date and GPS data do not survive the conversion. Every file this image converter produces is free of EXIF and location data. That is useful when you are about to post a photo publicly or send it to someone you do not know.
When you want the metadata kept
If you need the capture date for sorting or the location for a travel album, keep the original file alongside the converted copy. To see exactly what a photo reveals before deciding, or to remove metadata while keeping the original format, use Remove EXIF.
A note on orientation
Orientation is the one piece of metadata that changes how the picture looks. Because the converter applies it to the pixels first, nothing is lost when the tag itself is dropped.
Converting in Bulk
The image converter takes a whole folder's worth of images at once, mixed formats included: a HEIC from your phone, a WebP saved from a website and a PNG screenshot all convert to the same output format in one pass.
Limits
A batch holds up to 30 images on a computer and 10 on a phone, at up to 20 MB per file on a computer and 5 MB on a phone. Images larger than about 16.7 megapixels are scaled down to fit what browsers can safely draw, and the file list says when that happens.
File names in the ZIP
Download files one by one, or all at once as a ZIP. When two images would end up with the same name, for example photo.png and photo.webp both becoming photo.jpg, the second is saved as photo (2).jpg instead of overwriting the first.
Big batches on a phone
Each image is decoded, converted and released before the next one starts, so memory use stays flat. Large HEIC files are the slowest to decode; give a long batch a minute rather than reloading the page.
When a Dedicated Converter Does the Job Better
This image converter covers the common case: any image in, JPG, PNG or WebP out. Some jobs need settings that only make sense for one pair of formats, and the site has a dedicated converter for each. The grid above shows them all.
PDFs
To turn photos or scans into a document, Image to PDF combines them into one file and can keep it under a size limit. To go the other way, PDF to JPG renders each page as an image. Drop a PDF here and you will be pointed to it.
SVG and vector graphics
An SVG has no pixel size until you give it one, so SVG to PNG lets you choose the width before rendering. Going the other way, PNG to SVG traces a raster image into vector paths.
Icons and favicons
Windows icons and website favicons pack several sizes into one file. PNG to ICO builds that file, and PNG to Icon produces the full set of favicon sizes a website needs.
Hitting a file size
If a form demands an image under 100 KB, changing the format alone may not get you there. The Compress to 100KB tool and its siblings search for the best quality that fits the limit.
Images inside code
For embedding a small image directly in HTML, CSS or JSON, Image to Base64 turns it into a data URL.
Why the Conversion Happens in Your Browser
Most online image converters upload your file to a server, convert it there and keep a copy for a while before deleting it. This one does the whole job on your own device.
What that means for you
Your images are never sent anywhere, so there is no upload to wait for and no copy on someone else's server. You can confirm it yourself: open your browser's network panel while you convert and you will see no image leave the page. There is no account, no watermark and no daily limit.
What it costs
The work uses your device's processor and memory, so a large batch converts faster on a laptop than on an older phone. Formats depend on your browser too: AVIF needs a reasonably recent browser to decode, and Safari cannot create WebP files. If that happens, the file list tells you and JPG or PNG will still work.