QoTool is a free, no-signup image converter for designers and developers. Convert AVIF, WebP, PNG and other formats locally in your browser using WebAssembly, with batch conversion and downloadable results. Useful workflows include AVIF-to-PNG compatibility and SVG-to-ICO asset preparation.
Limits: initial engine loading takes time; animated and multi-page inputs use the first frame/page; PSD output is flattened; ICO output is a single image capped at 256 x 256. Image files remain local, while the website still makes normal library and analytics requests.
QoTool is a free, no-signup web app that converts images locally in the browser using WebAssembly.
- for
- Designers and developers who need quick, privacy-focused image format conversion.
- pricing
- free
Key features
6 features of QoTool
- Local conversion — All image processing runs in the browser, so files never leave the user’s device.
- Batch support — Convert up to 30 images per batch, each up to 20 MB.
- Wide format list — Supports 23 input and 21 output formats, including AVIF, WebP, PNG, JPEG, SVG, ICO and more.
- Quality controls — Adjust quality settings for lossy formats and set background colors for transparent outputs.
- Download options — Download converted files individually or as a single ZIP archive.
- Instant preview — View conversion results before downloading.
Use cases
- Prepare web-ready assets by converting PNGs to WebP for faster page loads
- Create compatible icons by turning SVGs or PNGs into ICO files for desktop apps
- Batch-convert photo archives from HEIC to JPEG for cross-platform sharing
QoTool vs alternatives
 QoTool |  Percept Pixel |  Desktop Colour Picker | .jpg?width=64) Freesets | ||
|---|---|---|---|---|---|
| Best for | On-device batch image conversion | Cloud image CDN and on-the-fly transformations | Screen colour picking | General free developer utilities | Curated list of free tools |
| Pricing | Free | Free | Free | Free | One time fee |
| DevHunt upvotes | 1 | 18 | 16 | 19 | 12 |
| Launched | Aug 2029 | Jan 2024 | Sep 2023 | Apr 2024 | Jan 2023 |
- QoTool vs Percept Pixel: Percept Pixel offers a cloud-based image CDN and transformation service, while QoTool runs entirely locally.
- QoTool vs Desktop Colour Picker: Desktop Colour Picker is a colour-selection utility, not an image converter.
- QoTool vs Freesets: Freesets is a collection of assorted developer tools, not focused on image conversion.
- QoTool vs Damn Good Tools: Damn Good Tools lists many free tools but does not provide a dedicated image conversion service.
QoTool FAQ
Do my images get uploaded to a server?+
No. All conversions are performed locally in the browser; files are never sent to a server.
What are the size limits for files?+
Each image is limited to 20 MB and 40 million pixels for browser stability.
Can I convert animated or multi-page files?+
Animated and multi-page inputs are reduced to the first frame or page; only a still image is output.
What happens to metadata?+
Metadata such as camera or location information is not preserved in the output files.
Why does the tool take time to start?+
The WebAssembly engine must load before conversions can begin, which can cause an initial delay.
Summarized by DevHunt from qotool.com · Sep 27, 2026. Details may change; check the official site.
