ImageConverter.dev is a privacy-focused, browser-based image conversion tool that lets users convert between 20+ image formats entirely on-device without uploading files to any server.
What is ImageConverter.dev?
ImageConverter.dev is a free online tool that converts image files between formats such as PNG, JPG, WebP, SVG, HEIC, AVIF, TIFF, and GIF. It runs entirely in the user's browser using Web APIs, meaning no files are ever uploaded to a server. The tool is developed by the team behind imageconverter.dev and supports conversions up to 50MB per file.
Key Features
- 100% browser-based processing — All conversions happen locally using Web APIs; after the page loads, the tool works even offline.
- Support for 20+ image formats — Including modern formats like HEIC and AVIF as well as legacy formats like TIFF and GIF, with both input and output flexibility.
- Quality and size control — Users can adjust output quality for JPG and WebP, with instant preview of resulting file size before downloading.
- No registration or limits — Unlimited free conversions with no sign-ups, watermarks, or tracking.
- Max file size of 50MB — Accepts files up to 50MB per conversion.
- Part of a broader tool suite — The site also offers a bulk resize tool with format switching support for batch conversions.
- Multi-language support — Available in 18 languages, including English, Chinese, and others.
Who is it for?
- Privacy-conscious users who want to avoid uploading sensitive images to cloud services.
- Web developers needing to quickly convert images to modern formats like WebP for better performance.
- Photographers working with HEIC or RAW files who need to convert to more universal formats like JPG or PNG.
- Designers who need to toggle between SVG, PNG, and JPG without installing desktop software.
What can you do with ImageConverter.dev?
- Convert a single image to another format — Drag and drop or browse to select an image, choose output format, and download the result instantly.
- Adjust output quality for space optimization — For JPG and WebP outputs, use the quality slider to balance file size and visual fidelity.
- Work offline — After the initial page load, the tool remains functional even without an internet connection, making it reliable in low-connectivity scenarios.
How does ImageConverter work?
- Select or drop an image — the tool automatically detects the source format.
- Pick output settings — choose target format and adjust quality for JPG or WebP.
- Download instantly — the converted file is generated locally and can be downloaded immediately with no queues or uploads.
Pros and cons
- Pros: Fully private; no uploads; works offline after load; supports many formats; free and unlimited; no watermark.
- Cons: Single-file conversion only per session; limited to 50MB file size; batch conversion requires separate bulk resize tool.
FAQ
Is ImageConverter.dev free?
Yes, it is completely free with unlimited conversions and no watermark or registration required.
Do my images get uploaded to a server?
No. All conversion happens in your browser using Web APIs. Your files never leave your device.
Does it reduce image quality?
Original resolution is preserved. Gentle compression is applied only when the target format requires it (e.g., JPG). Transparent backgrounds are flattened to white when exporting to JPG.
Can I convert multiple images at once?
The main tool handles one file at a time. For bulk conversions, the site provides a separate bulk resize tool with format switching support.
Input: SVG, HEIC, AVIF, TIFF, GIF, JPEG, JPG, PNG, WebP. Output: the same set, with all combinations available.
