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Olivez

Image Converter

Convert JPG, PNG, WebP, AVIF, HEIC, and HEIF images in your browser. Choose JPEG, PNG, WebP, or AVIF output, review each result, and download files or a ZIP.

Convert to
Tap to add imagesJPG · PNG · WebP · AVIF · HEIC and HEIF
Ready.

How to convert images online

  1. 1.

    Choose the output

    Select JPEG, PNG, WebP, or AVIF. The format applies to images waiting in the batch.

  2. 2.

    Add and convert

    Drop or select JPG, PNG, WebP, AVIF, HEIC, or HEIF still images, then select Convert. The first finished result opens while the rest continue.

  3. 3.

    Check and download

    Compare each result, change its download name if needed, and download one file or the completed batch as a ZIP.

Which format should you choose?

JPEG / JPG
Good for photographs and broad compatibility. It does not support transparency; choose the background colour used for transparent source pixels.
PNG
Good for screenshots, text, logos, and transparency. This converter writes PNG without a lossy quality setting, so photographs can become much larger.
WebP
Useful for web images. This converter uses a quality setting and can retain transparency. Check the result when small text or sharp edges matter.
AVIF
A compact modern option for photographs and graphics. It supports transparency here, but encoding may take longer than JPEG or WebP.

HEIC and HEIF are input formats; output is JPEG, PNG, WebP, or AVIF. Their original previews may be unavailable until conversion finishes. Changing a filename extension does not convert an image. If the source is already in the chosen format, the tool keeps the original instead of re-encoding it.

Quality, file size, and transparency

Quality controls JPEG, WebP, and AVIF encoding. A value of 80 is an encoder setting, not a promise of “80% visual quality,” and the numbers are not directly comparable across formats. File size depends on the picture, so compare the result rather than assuming conversion always makes it smaller.

PNG, WebP, and AVIF can keep transparent areas. JPEG cannot; transparent pixels take the background colour you choose. Converting a JPEG to PNG does not restore detail or transparency that was already lost.

Keep the source if you need its original metadata. Re-encoding can remove EXIF, location data, and colour profile information.

Privacy and limits

Conversion and ZIP creation run in your browser. Image bytes are not sent to a conversion server.

Use still JPG/JPEG, PNG, WebP, AVIF, HEIC, or HEIF files. Animated files and image sequences are not supported. You can add up to 40 images, with a 50 MiB limit per file, 250 MiB per batch, and 80 megapixels per image. Large batches may reach your browser's memory limit sooner.

Need a smaller file in the same format? Try the Image Compressor.