Convert images to the format you need
Different projects need different image formats. Websites often prefer WebP or AVIF for smaller files, while screenshots and logos may need PNG transparency. Photos commonly use JPG, and some phones save images as HEIC. This free image converter changes supported files in your browser, so your pictures stay on your device during the conversion.
You can add several images, choose an output type, adjust quality for lossy formats, and download the converted files. The best choice depends on transparency, detail, file size, and the software that needs to open the result. A smaller file is useful for a web page, but a quality setting that is too low can soften text or remove fine detail.
How do you use the image converter?
The tool keeps the controls in one place, but the safest workflow is to convert one sample first. Check the result in the app where it will be used, then process the rest of the batch with the same settings.
- Add your images. Drag files onto the drop area or use the file picker.
- Choose the output format. Select AVIF, WebP, PNG, JPG, JPEG, or BMP when available.
- Set quality when offered. Lower values reduce size, while higher values keep more detail.
- Convert and download. Save individual results or download the converted batch.
Keep the original files until you have opened the converted copies. That simple habit protects the source image if a target format removes transparency, changes color handling, or fails to open in an older program.
Which image format should you choose?
- WebP. A practical web format that supports lossy and lossless images, plus transparency.
- AVIF. A newer format that can produce small files, although older software may not open it.
- PNG. A lossless choice for screenshots, icons, diagrams, and transparent graphics.
- JPG or JPEG. A common photo format with small files and no transparent background.
- BMP. A simple bitmap format that keeps large files because it uses little compression.
Transparency is the first question for many graphics. A JPG can’t keep transparent pixels, so a logo with a clear background may need PNG or WebP. Photos usually handle JPG or WebP well. For a site that supports AVIF, test the visual quality at the final display size before choosing it for every image.
Why does image conversion happen in the browser?
Browser processing means the page can read the selected file, draw it to an image canvas, and create a new file without sending the source to a remote server. That can reduce upload time and is a better fit for private photos, screenshots, and work files. Processing speed still depends on the browser, device memory, image dimensions, and number of files.
A local conversion page can’t fix every damaged or unusual image. Very large files may use a lot of memory, and a format may be missing when the browser can’t encode it. The control list reflects what the current browser can create, which keeps the download step clear.
A note on HEIC and AVIF support
HEIC files often come from phone cameras, but browser support varies. A browser may read the file only with extra decoding support, and many browsers can’t create HEIC output. AVIF output also depends on the browser’s image encoder. The converter checks available support and hides formats that the current device can’t create.
If an input fails, try a current browser and confirm that the file opens in a normal image viewer. If the output list lacks AVIF, WebP or PNG may be a safer choice for the same project. Always compare the converted image before deleting the original.
Frequently asked questions
How do I convert an image to another format?
Drag your images onto the drop zone or click to pick files. Choose the output format you want, such as WebP, AVIF, PNG, JPG, or BMP, set the quality if it applies, then press Convert. Each image is processed in your browser and you can download the results one by one or all at once.
Which formats can this image converter output?
It can convert to PNG, JPG, JPEG, WebP, AVIF, and BMP. PNG, JPG, and WebP work in every modern browser. AVIF and BMP depend on your browser, so the tool checks support and only offers formats your browser can actually create. If a format is greyed out, your browser cannot encode it.
Can it convert HEIC images from my iPhone?
It can open and convert HEIC photos only if your browser is able to decode HEIC, which Safari on Apple devices can do. Browsers cannot save files as HEIC, so HEIC is supported as an input where possible, not as an output. To share an iPhone photo widely, convert it to JPG or WebP.
Is my image uploaded to a server?
No. The conversion runs entirely in your browser using the canvas in your device. Your photos are never uploaded, stored, or sent anywhere. That keeps private images private and makes the tool fast, since there is no upload or download wait.
What does the quality slider do?
For lossy formats like JPG, WebP, and AVIF, the quality slider controls the balance between file size and detail. A higher value keeps more detail but makes a bigger file. A lower value shrinks the file but can add blur or blockiness. PNG and BMP are lossless, so the slider does not apply to them.
Why convert to WebP or AVIF?
WebP and AVIF are modern formats that usually produce much smaller files than JPG or PNG at the same visual quality. Smaller images load faster on websites and use less storage. AVIF tends to compress the best, while WebP has the widest support, so both are good choices for the web.
Can I convert many images at once?
Yes. You can add several images and convert them together in one batch. Each result shows its new size so you can see how much space you saved. You can download each file separately or grab them all with the download all button.