2026-10-02

Convert PNG, JPG and WebP Without Uploading Them (CloudConvert, Convertio and iLoveIMG Alternative)

Everyone needs a format change sometimes: a WebP that a form will not accept, a PNG that is far too heavy for a web page, a logo that has to be PNG because it needs a transparent background. Online converters like CloudConvert, Convertio and iLoveIMG solve this by taking your file onto their servers and sending a converted copy back. That is fine for a throwaway image. It is less fine for a scan of an ID, a design under NDA or a camera roll.

iLoveDevTools's Image Converter does the conversion in your browser instead. Your browser decodes the picture and its own encoder writes the new format, so the file never leaves your device. Drop in one file or a hundred and download the result, as a zip when there are several.

What it handles

• PNG, JPG and WebP in either direction, plus AVIF when your browser can write it (the option is hidden where it cannot).
• A quality slider for the lossy formats, with the old and new size and the percentage change shown for every file before you download anything.
• Transparency done properly: converting a transparent PNG to JPG fills the see-through areas with white (or any colour you pick) instead of black.
• Batch conversion with a single zip download and unique names, so two files called photo.png do not overwrite each other.

Which format to pick

• WebP is usually the best default for websites: smaller than JPG or PNG at a similar look, and read by every current browser.
• JPG is the safest choice for photos that have to open everywhere.
• PNG is lossless and keeps transparency, which is right for logos and screenshots and wrong for large photos.

Where dedicated converters still win

• More formats. CloudConvert and similar services read and write hundreds of formats, including HEIC, TIFF, RAW camera files, SVG rasterising and documents. This tool covers the common web formats only; HEIC is not supported, and animated GIFs convert from their first frame.
• Metadata. Re-encoding drops EXIF data and embedded colour profiles. That is a privacy plus for sharing photos, but a minus if you need the metadata kept.
• Encoder tuning. Tools built around a specific codec offer fine control over compression settings. Here you get the browser's built-in encoders and a quality slider.
• Very large batches. Everything runs in one browser tab and is limited by your device's memory; a server can chew through thousands of files.

Verdict

For the everyday job - "make this WebP a JPG" or "give me these PNGs as WebP for my site" - converting locally is quicker and leaves no copy of your picture on anyone else's server. For exotic formats or batch automation, use a dedicated converter. Start with the Image Converter, and if you also need a different size, the Image Resizer does that in the same way.

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