{"$schema":"https://toolsly.tools/schemas/tool-manifest-v1.json","generated":"2026-05-20T20:47:38.075Z","discovery":{"catalog":"https://toolsly.tools/tools.json","llmsTxt":"https://toolsly.tools/llms.txt","sitemap":"https://toolsly.tools/sitemap.xml"},"relatedTools":[{"slug":"pdf-merge","name":"Merge PDF","url":"https://toolsly.tools/pdf-merge"},{"slug":"pdf-rotate-pages","name":"Rotate PDF Pages","url":"https://toolsly.tools/pdf-rotate-pages"},{"slug":"pdf-delete-pages","name":"Delete PDF Pages","url":"https://toolsly.tools/pdf-delete-pages"},{"slug":"pdf-extract-pages","name":"Extract PDF Pages","url":"https://toolsly.tools/pdf-extract-pages"},{"slug":"pdf-reorder-pages","name":"Reorder PDF Pages","url":"https://toolsly.tools/pdf-reorder-pages"},{"slug":"pdf-add-page-numbers","name":"Add Page Numbers to PDF","url":"https://toolsly.tools/pdf-add-page-numbers"},{"slug":"pdf-compress","name":"Compress PDF","url":"https://toolsly.tools/pdf-compress"},{"slug":"pdf-unlock","name":"Unlock PDF","url":"https://toolsly.tools/pdf-unlock"}],"kind":"converter","slug":"pdf-add-watermark","name":"Add Watermark to PDF","description":"Stamp a text watermark across every page of a PDF — in your browser, no upload.","longDescription":"Drop in a PDF, type your watermark text, and pick a position, color, size and opacity. The watermark is drawn on every page using a built-in Helvetica font. Choose \"Center diagonal\" to get the classic 45° draft/confidential stamp, or any of the edge positions for a header/footer style. Everything runs locally — your file is never uploaded.","category":"document","categoryName":"Document","keywords":["watermark pdf","add watermark to pdf","pdf watermark","stamp pdf","draft watermark pdf","confidential watermark pdf","add text to pdf","watermark pdf online","watermark pdf free","diagonal watermark pdf","pdf watermark generator","add watermark pdf in browser"],"url":"https://toolsly.tools/pdf-add-watermark","runsOn":"client","multiple":false,"batch":false,"input":{"type":"file","extensions":[".pdf"],"mimeTypes":["application/pdf"]},"output":{"type":"file","extension":".pdf","mimeType":"application/pdf"},"options":[{"type":"text","key":"text","label":"Watermark text","defaultValue":"DRAFT","placeholder":"CONFIDENTIAL"},{"type":"select","key":"position","label":"Position","defaultValue":"diagonal","choices":[{"value":"diagonal","label":"Center diagonal"},{"value":"top","label":"Top"},{"value":"bottom","label":"Bottom"},{"value":"center","label":"Center horizontal"}]},{"type":"number","key":"opacity","label":"Opacity (%)","defaultValue":30,"min":0,"max":100,"step":5},{"type":"number","key":"fontSize","label":"Font size","defaultValue":60,"min":12,"max":120,"step":1},{"type":"select","key":"color","label":"Color","defaultValue":"gray","choices":[{"value":"gray","label":"Gray"},{"value":"red","label":"Red"},{"value":"blue","label":"Blue"},{"value":"black","label":"Black"}]}],"invocation":{"webUi":"https://toolsly.tools/pdf-add-watermark","api":null,"notes":"Currently runs client-side in the user's browser. Drop a file on the UI at `webUi` and download the converted result. A remote MCP/REST API is planned."}}