Best Free Online Developer Tools to Use in 2026
A practical, opinionated list of the best free online developer tools worth using in 2026, organized by category so you can find what you need fast.
Aug 08, 2026
Image Converter
- Home
- Utility
- Image Converter
Convert images between formats directly in your browser. No files are uploaded — everything runs locally.
Drop images here
or click to browse
Supports PNG, JPG, WebP, BMP, GIF, SVG, TIFF • Max 50MB
Free Online Image Converter
Convert your images to any format instantly — directly in your browser. No uploads, no servers, no file size limits.
Supported formats
- PNG — Lossless, supports transparency
- JPEG — Small file size, adjustable quality
- WebP — Modern format, smaller than JPEG with same quality
- BMP — Uncompressed bitmap
Features
- Batch convert multiple images at once
- Adjust output quality (JPEG/WebP only)
- Set maximum dimensions to resize during conversion
- Download individual files or all as a ZIP archive
- 100% free and private — files never leave your device
How to Use
- Drop or select images — Drag and drop images onto the drop zone, or click to browse. Multiple images are supported for batch conversion.
- Adjust settings — Choose the output format (PNG, JPEG, WebP, or BMP), adjust quality (JPEG/WebP), and optionally set max width/height to resize during conversion.
- Click "Convert All" — The conversion runs entirely in your browser using the Canvas API. A progress bar shows the conversion status.
- Download — Download individual converted files or click "Download All as ZIP" to get all files in a single archive.
Frequently Asked Questions
Are my images uploaded to a server?
No. All image conversion is performed locally in your browser using the HTML5 Canvas API. Your images never leave your device. This makes the tool completely private and secure.
What image formats are supported for conversion?
You can convert between PNG, JPEG, WebP, and BMP formats. Input files can be in any common format including GIF, SVG, and TIFF. All processing happens client-side with no file size limit beyond your browser's capabilities.
Can I convert multiple images at once?
Yes. The tool supports batch conversion. Simply select multiple files when browsing or drag them all onto the drop zone. Each file appears in the list and can be converted individually. Use "Download All as ZIP" to download all results at once.
Can I resize images during conversion?
Yes. You can set maximum width and height values. The tool automatically scales the image to fit within those dimensions while preserving the original aspect ratio. Leave the fields empty to keep the original dimensions.
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Last updated: 17 Aug 2026
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