Stamp text like CONFIDENTIAL across your pages with custom color, opacity and angle.
Stamp text over every page. Choose size, color, opacity, angle and tiling.
DataDoc Studio is a complete online toolkit to edit PDFs, convert images, and transform CSV & JSON files. Everything runs locally in your browser, so it is fast, works offline once loaded, and keeps your files 100% private.
Merge PDF, split PDF, compress PDF, rotate, crop and delete pages. Add watermarks, page numbers, and fill interactive PDF forms in seconds.
Draw, type or upload an e-signature to sign contracts, and permanently black out sensitive information with the redaction tool.
Turn PDF to JPG, convert JPG/PNG images to PDF, scan photos to PDF, and extract text or export a searchable OCR PDF in multiple languages.
Open huge CSV files instantly, remove duplicate rows, trim whitespace, and convert CSV to JSON, SQL or Markdown tables.
Beautify, minify and validate JSON with a live tree viewer, flatten nested data, convert JSON to CSV, and diff two payloads.
Crop, rotate, resize and apply filters, then export to PNG, JPG or WebP — a quick free image editor right in your browser.