Image Format Converter – JPG, PNG, WebP

Convert image formats online free (JPG ↔ PNG ↔ WebP)

ToolsOfWeb is a free image format converter that runs entirely in your browser. Convert WebP to JPG for compatibility with older software, JPG to PNG when you need lossless quality, or anything to WebP for the smallest modern file sizes — with no upload, no watermark, and no sign-up.

You can batch convert up to 5 images at a time and download them individually or as a ZIP. Because processing happens locally, it’s a safer option for client work, personal photos, and brand assets that you don’t want to send to a server.

How to convert image format

• Upload up to 5 images (JPG, PNG, WebP, GIF, BMP).
• Pick the output format: JPG, PNG, or WebP.
• Set quality (for JPG/WebP) and a background color for transparent areas (for JPG).
• Click Convert, then download the files individually or as a ZIP.

JPG vs PNG vs WebP — which should you use?

JPG is best for photographs and final exports where small file size matters more than pixel-perfection. It’s lossy, so every re-save loses a little detail — avoid editing and re-saving the same JPG repeatedly.

PNG is lossless and keeps transparency, which makes it ideal for logos, icons, screenshots, and graphics with text. The trade-off is larger file sizes, especially for photos.

WebP is the modern middle ground: typically 25–35% smaller than JPG at similar quality, with transparency support. Use it for websites and apps — convert to JPG only when you need compatibility with older tools.

Tips for clean conversions

• Don’t “upscale” quality by converting JPG → PNG — it only inflates file size.
• WebP → JPG is the most common compatibility fix (some upload forms still reject WebP).
• For the smallest files, convert to WebP at 80% quality, then compare visually with the original.
• Keep a PNG master of logos/icons, and export JPG/WebP copies for sharing.

How conversion works under the hood

This converter decodes your image with the browser's native image pipeline and re-encodes it in the target format — all on your device. The quality slider (used for JPG and WebP output) controls the lossy compression level: 90% is the default and a sweet spot for photos, while 100% keeps maximum fidelity for archival copies. PNG output is always lossless, so it has no quality slider — the file is simply larger.

The background color picker matters when converting to JPG, because JPG cannot store transparency. Any see-through pixels are filled with the color you choose (white by default). If your source has transparency you want to keep, convert to PNG or WebP instead. One more technical note: the tool converts only the first frame of animated GIFs — it is designed for still-image conversion, not animation.

Real-world conversion scenarios

• WebP won't upload: a job portal, government form, or old CMS rejects your WebP screenshot — convert to JPG in seconds.
• Website speed project: batch-convert a folder of PNG photos to WebP at 80% and watch page weight drop dramatically.
• Design handoff: turn a designer's WebP exports into JPGs a client's PowerPoint will accept.
• Print preparation: convert JPG photos to PNG before editing so repeated saves don't stack compression artifacts.
• Archive cleanup: standardize a mixed folder of BMP, GIF, and PNG scans into one format.

You can convert up to 5 images per batch (25MB each) and download them one by one or as a ZIP. Filenames are preserved with the new extension, so banner.png becomes banner.webp — no renaming detective work afterwards. Because everything runs locally, even client photos and unreleased brand assets are safe to convert here.

FAQs