Ferramentas gratuitas para PDF, imagens e Markdown — sem software para instalar, sem marcas d'água nos seus arquivos e os arquivos nunca são mantidos por mais de 60 minutos.
ACE PDFMD é um kit de ferramentas baseado na web com mais de 70 ferramentas para trabalhar com arquivos PDF, imagens e Markdown — mesclar, dividir, comprimir, converter, editar, assinar, OCR, redigir e muito mais. É construído para ser uma alternativa genuinamente gratuita, rápida e que respeita a privacidade.
Sim. Qualquer pessoa pode usar o ACE PDFMD sem se cadastrar — visitantes anônimos recebem 10 tarefas/downloads gratuitos por dia. Criar uma conta gratuita eleva isso para Ilimitado. Não é necessário cartão de crédito para nenhum dos dois. Um plano Pro pago ($2,99/mês ou $24,99/ano) remove todos os limites diários.
Não. Cada ferramenta funciona no navegador. Não há nada para baixar ou instalar.
Muitas ferramentas nunca fazem upload do seu arquivo. Para as que precisam de servidor, o arquivo é transmitido por HTTPS e excluído em 60 minutos. Política de Privacidade.
Nenhuma API de IA de terceiros é usada para processar seus documentos. Todas as conversões, OCR e edições rodam em software de código aberto auto-hospedado — seu conteúdo nunca é enviado para OpenAI, Google Gemini ou qualquer outro provedor de IA.
Veja nossa página completa de Preços para comparar limites diários, tamanhos de arquivo e preço.
A maioria dos sites PDF gratuitos impõe limites muito agressivos, esconde ferramentas atrás de paywalls ou monetiza seus documentos silenciosamente. A ACE PDFMD mantém seus níveis Anônimo e Gratuito genuinamente utilizáveis, é transparente sobre o que é armazenado e cobra um dos preços Pro mais baixos — $2,99/mês — sem taxas ocultas.
O ACE PDFMD é construído sobre vários projetos de código aberto, e agradece a eles: pikepdf (MPL-2.0), pdfplumber (MIT) e pypdfium2 (Apache-2.0) para ler, renderizar e editar PDF, img2pdf (LGPL-3.0) para conversão de imagem em PDF sem perdas, e Tesseract OCR e LibreOffice no servidor. No seu navegador, KaTeX (MIT), Turndown (MIT) e Mammoth.js (BSD-2-Clause) fazem a renderização e a conversão. PyMuPDF (AGPL-3.0) não é mais usado em nenhuma parte do projeto. Agradecemos aos autores e às comunidades por trás desses projetos.
| Ferramenta | O que faz |
|---|---|
| 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. |