How to Convert Multiple Images to JPG at Once
Converting images to JPG one at a time is slow when you have a folder of 20, 50, or 100 photos. Batch conversion tools let you upload all your images at once, set a single quality level, and download every converted JPG in seconds. This guide covers how to batch convert any image format to JPG using a free browser-based tool.
Quick Answer
Converting images to JPG one at a time is slow when you have a folder of 20, 50, or 100 photos. Batch conversion tools let you upload all your images at once, set a single quality level, and download every converted JPG in seconds.
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Your images stay on your device. Nothing is uploaded to any server.
Step-by-Step Guide
4 steps · takes under 1 minute
Upload all your images at once
Click the upload zone and select multiple files (Ctrl+A on Windows, Cmd+A on Mac to select all). Or drag a group of files and drop them together. PNG, WebP, GIF, BMP, TIFF, AVIF, and most image formats are accepted.
Set a single quality level for the batch
Use the quality slider to set your preferred JPEG quality. For photos: 85–92% gives excellent quality at a fraction of PNG file size. For forms with strict size limits: 70–75% keeps files smaller.
Click Convert All
All images are converted simultaneously in your browser using the Canvas API. No files are uploaded — everything runs locally on your device.
Download each converted JPG
Each converted file shows a download button. Click each one to save the JPG. All conversions run locally so there are no upload or processing limits.
100% Private — Zero Uploads
ImgToolkit runs entirely in your browser using the Canvas API. Your images are never sent to a server, never stored in the cloud, and never seen by anyone else. This makes it safe for sensitive documents, client work, medical imagery, and confidential screenshots.
Pro tip
Use 75–85% quality for web images — you get 60–80% smaller files with no visible difference at normal screen sizes.
Format & File Size Comparison
Same 1080×1080px photo processed four ways
| Format | Quality | File Size | Notes |
|---|---|---|---|
| PNG (original) | Perfect | 4.2 MB | No compression — too large for web |
| Compressed PNG | Visually identical | 1.1 MB | −74% — transparency preserved |
| JPG (85% quality) | Excellent | 310 KB | −93% · Best for photos |
| WebP (85%)BEST | Excellent | 205 KB | −95% · Recommended for web |
Based on a 1080×1080px photo. Results vary by image content and complexity.
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Frequently Asked Questions
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