ConvertYard converts images, PDFs, audio, and video files locally using WebAssembly — your files never leave your device.
ConvertYard is a browser-based file conversion service offering 116 tools across categories including images, PDF, video and audio, and developer utilities. Conversions run locally via WebAssembly, using libraries such as libvips, ffmpeg, and pdf-lib, so files are processed on the user's device rather than uploaded to a server. The site supports batches of 1,000 or more files at once, with output delivered as a single ZIP file, and does not require account creation.
Specific tools listed include HEIC to JPG, JPG to WebP, PNG to WebP, WebP to JPG, HEIC to PNG, a background remover, image compressor, batch image resizer, PDF merge, PDF compress, PDF to JPG, MP4 to MP3, a JSON formatter, and an AI-based alt text generator, among others. The site states a practical file size limit of roughly 2GB depending on device memory, and functions offline after a tool's WebAssembly module has been cached on first load.
The product is presented as suited to photographers handling batches of HEIC or RAW files, developers needing conversion utilities, and users working with sensitive files such as contracts, medical records, or financial documents. The site is free to use, supported by display ads placed below tool interfaces and within articles (not within the conversion flow itself), and uses Google Analytics for site traffic measurement after cookie consent. A paid API tier is described as planned for future release.
Yes, all tools are free, supported by minimal display ads outside the conversion flow. A paid API tier may be added in the future.
No, there is no signup, email wall, or login required.
File size depends on device memory, with most browsers handling files up to ~2GB, and batches have been tested up to 1,000+ files.
No, all conversion happens locally in the browser and no file data, filenames, or contents are sent to their servers.
It's built for photographers, developers, and anyone handling sensitive files like contracts or medical records who need local batch conversion.
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