AI SubTools

AI SubTools (aisubtools.xyz) is a free, privacy-first collection of 50+ online tools designed for developers, SEO specialists and content creators. **For developers:** JSON formatter & validator, Base64 encoder/decoder, MD5 / SHA-256 / CRC32 hash generators, Unix timestamp converter, HTML template generator, and Base64 image decoder. **For creators & marketers:** image compressor, image format converter, background remover, gradient CSS generator, word & character counter, EAN/UPC barcode creator, and a full Markdown-to-HTML converter. **Why users choose AI SubTools:** - 100% client-side processing — data never leaves the browser - No signup, no watermarks, no file size games - Clean interface with zero ads - Works on desktop and mobile - Completely free, with new tools added every month Whether you need to validate a JSON payload, hash a file, compress images in bulk or generate a barcode, AI SubTools gives you the right tool in one click — no install required.