Herramientas gratuitas para PDF, imágenes y Markdown — sin software que instalar, sin marcas de agua en tus archivos, y los archivos nunca se conservan más de 60 minutos.
ACE PDFMD es un conjunto de herramientas web con más de 70 herramientas para trabajar con archivos PDF, imágenes y Markdown: combinar, dividir, comprimir, convertir, editar, firmar, OCR, redactar y más. Está diseñado para ser una alternativa genuinamente gratuita, rápida y respetuosa de la privacidad a los programas de escritorio o conversores de pago.
Sí. Cualquiera puede usar ACE PDFMD sin registrarse — los visitantes anónimos obtienen 10 tareas/descargas gratuitas por día. Crear una cuenta gratuita lo aumenta a Ilimitado. No se requiere tarjeta de crédito para ninguno. Un plan Pro de pago ($2.99/mes o $24.99/año) elimina todos los límites diarios.
No. Cada herramienta funciona en tu navegador web — Chrome, Firefox, Safari o Edge. No hay nada que descargar o instalar.
Muchas herramientas nunca suben tu archivo — se ejecutan en tu navegador. Para las que requieren servidor, viajan por HTTPS y se eliminan en 60 minutos. Política de Privacidad.
No se utiliza ninguna API de IA de terceros para procesar tus documentos. Todas las conversiones, OCR y ediciones se ejecutan en software de código abierto autoalojado — tu contenido nunca se envía a OpenAI, Google Gemini ni ningún otro proveedor de IA.
Consulta nuestra página completa de Precios para ver una comparación de límites de tareas, tamaños de archivo y precio.
La mayoría de los sitios PDF gratuitos te limitan muy agresivamente, ocultan herramientas tras muros de pago o monetizan tus documentos silenciosamente. ACE PDFMD mantiene sus niveles Anónimo y Gratuito genuinamente utilizables, es transparente sobre qué se almacena y cobra uno de los precios Pro más bajos — $2.99/mes — sin tarifas ocultas.
ACE PDFMD se apoya en varios proyectos de código abierto, y les está agradecido: pikepdf (MPL-2.0), pdfplumber (MIT) y pypdfium2 (Apache-2.0) para leer, renderizar y editar PDF, img2pdf (LGPL-3.0) para la conversión de imagen a PDF sin pérdidas, y Tesseract OCR y LibreOffice en el servidor. En tu navegador, KaTeX (MIT), Turndown (MIT) y Mammoth.js (BSD-2-Clause) se encargan del renderizado y la conversión. PyMuPDF (AGPL-3.0) ya no se usa en ninguna parte del proyecto. Agradecemos a los autores y a las comunidades detrás de estos proyectos.
| Herramienta | Qué hace |
|---|---|
| PDF to Word | Convert PDF into an editable DOCX. |
| Merge PDF | Combine multiple PDFs into one document. |
| Split PDF | Extract page ranges or split into fixed-size chunks. |
| Compress PDF | Shrink file size by optimizing images. |
| JPG to PDF | Combine images into a single PDF. |
| PDF to JPG | Convert each page to an image. |
| Word to PDF | Convert DOCX documents to PDF. |
| Edit PDF Text | Edit the existing text directly inside the PDF, in place, with matching font/size/color. |
| Edit PDF | Add text, boxes, or images anywhere on the page. |
| Sign PDF | Draw a signature and place it on your document. |
| Organize PDF | Reorder or delete pages. |
| Rotate PDF | Rotate all or selected pages. |
| Extract Pages | Pull specific pages into a new PDF. |
| Protect PDF | Add a password to encrypt your PDF. |
| Unlock PDF | Remove password protection. |
| OCR PDF | Make scanned PDFs searchable by adding a text layer. |
| Compare PDF | Highlight text differences between two PDFs. |
| PDF Reader | Open and read a PDF page-by-page, right in the browser. |
| PDF Form Filler | Fill in a PDF's form fields and save or flatten the result. |
| Redact PDF | Permanently black out sensitive content. |
| Crop PDF | Trim margins from pages. |
| Watermark PDF | Stamp text over every page. |
| Add Page Numbers | Insert page numbers into your document. |
| Repair PDF | Fix corrupted or malformed PDF files. |
| Delete PDF Pages | Remove specific pages from a PDF. |
| Resize PDF | Rescale every page to a standard paper size. |
| Grayscale PDF | Convert every page of a PDF to black & white. |
| Flatten PDF | Bake form field values into the page and lock them. |
| Edit PDF Metadata | View and change a PDF's title, author, subject & keywords. |
| PDF to Markdown | Convert PDF content into clean Markdown (great for docs/LLMs). |
| PDF to Text | Extract plain, unformatted text from a PDF. |
| PDF to HTML | Convert a PDF into a simple standalone HTML page. |
| Extract Images | Pull every embedded image out of a PDF into a zip. |
| PDF to PowerPoint | Turn PDF pages into slides. |
| PowerPoint to PDF | Convert presentations to PDF. |
| PDF to Excel | Extract PDF text into spreadsheet rows. |
| Excel to PDF | Convert spreadsheets to PDF. |
| HTML to PDF | Paste HTML/markup and render it as a PDF. |
| PDF to PDF/A | Best-effort archival format conversion. |
| Scan to PDF | Turn photographed pages into a clean, professional scan -- deskew, shadow removal, color/grayscale/B&W, and auto page-order by filename. |
| Scan to Markdown | Turn photographed pages into clean, searchable Markdown text -- same deskew/shadow-removal cleanup as Scan to PDF, then OCR extracts the text into a .md file, page by page. |
| Markdown Editor | Open, write, and edit Markdown with a live rich preview (tables, images, task lists) -- export to .md, PDF, Word, or HTML. |
| Markdown Viewer | Upload a .md file and view it beautifully rendered -- tables, images, code blocks and all. |
| Markdown to PDF | Convert a .md file into a formatted PDF. |
| Markdown to Word | Convert a .md file into an editable DOCX. |
| Markdown to HTML | Convert a .md file into a standalone HTML page. |
| Word to Markdown | Convert a DOCX document into clean Markdown, tables included. |
| HTML to Markdown | Convert an HTML file into clean Markdown. |
| Markdown Table of Contents | Auto-generate and insert a linked Table of Contents from your headings. |
| Compare Markdown | Highlight line-by-line differences between two Markdown files. |
| Merge Markdown | Combine multiple .md files into one document, in order. |
| Split Markdown | Split a .md file into separate files at each heading. |
| Markdown to EPUB | Convert a .md file into an EPUB e-book. |
| ODT to PDF | Convert OpenDocument Text files to PDF. |
| ODS to PDF | Convert OpenDocument Spreadsheets to PDF. |
| ODP to PDF | Convert OpenDocument Presentations to PDF. |
| TXT to PDF | Convert a plain text file to PDF. |
| RTF to PDF | Convert Rich Text Format documents to PDF. |
| EPUB to PDF | Convert an EPUB e-book to PDF. |
| CSV to PDF | Render a CSV file as a formatted table PDF. |
| ZIP to PDF | Convert every supported file inside a .zip and merge them into one PDF. |
| Basic Image Editor | Crop, rotate, adjust brightness/contrast/saturation, and convert to grayscale — all in one interactive editor. |
| Compress Image | Reduce image file size while preserving quality. Target a quality level or an exact KB size. |
| Resize Image | Resize images by pixels, percentage, or target file size in KB. Batch resize multiple images at once. |
| Convert Image | Convert between JPG, PNG, WebP, BMP, GIF, TIFF and more. |
| Image to PDF | Combine multiple images into a single PDF file. |
| Image to Text (OCR) | Extract text from images using OCR. Supports 35+ languages. |
| Upscale Image | Increase image resolution using AI-style super-resolution (Lanczos interpolation). |
| Image Metadata | View and strip EXIF/metadata from images. Remove GPS, camera info, timestamps. |
| HTML to Image | Render an HTML file as a PNG screenshot. |
| PDF to Image (HQ) | Export PDF pages as high-resolution PNG or JPG images. |