ruvnet / ai-text-watermark

Invisible, key-verifiable watermarks for AI/LLM-generated text — SynthID-Text-style, in Rust + WebAssembly (Node + browser). Live playground included.

tooladda-online / pdf-watermark

Add Watermark to PDF — Add text, image, or logo watermarks to any PDF with live preview, diagonal tiling, opacity control, and page selection. Everything runs in your browser — no upload, no registration, original text stays selectable. Free on ToolAdda.online.