Compress .pptx files by optimizing slide images — reduce size by up to 70%
Drag & drop or click to select PowerPoint files
Only .pptx supported (max 200MB)
• A .pptx file is a ZIP archive containing XML and media (images in slides)
• The tool extracts and optimizes each image in the ppt/media/ folder
• Resizes oversized images and removes EXIF metadata
• Converts to JPEG/WebP to reduce file size
• Updates relationships in .rels files
• Repackages as .pptx with compression level 9
Compress PowerPoint (.pptx) files online for free by optimizing slide images. Reduce PowerPoint file size by up to 70% while keeping all content, animations, and effects intact. Especially useful for presentations with many high-quality images. Supports files up to 200MB. Batch compression — process multiple files at once.
Large PowerPoint files are slow to email, upload to cloud storage, and share with colleagues. Presentations with many high-resolution images can easily exceed 50-100MB. Compressing reduces file size by optimizing the embedded images — the most common cause of large PPTX files. The compressed file opens normally in PowerPoint, Google Slides, and LibreOffice Impress with all animations and transitions intact.
A .pptx file is a ZIP archive containing XML files and media (images in the ppt/media/ folder). The compressor extracts each image, resizes it if it exceeds the max width, converts it to JPEG or WebP, removes EXIF metadata, and repackages the file. Text, shapes, animations, and transitions are not affected — only the embedded images are optimized.
Free Online PowerPoint Compressor is useful when you need to complete a focused task quickly without installing desktop software, creating another account, or switching into a heavy workflow. It works well for quick checks, conversions, previews, cleanups, generation tasks, and everyday operations where speed and consistency matter. Compress PowerPoint (.pptx) files online for free by optimizing slide images. Reduce PowerPoint file size by up to 70% while keeping all content, animations, and effects intact. Especially useful for presentations with many high-quality images. Supports files up to 200MB. Batch compression — process multiple files at once.
Start with a small sample so you understand how Free Online PowerPoint Compressor handles your input, then apply it to the full task. Review the important fields, copy or export the result, and test it in the place where you plan to use it. This keeps the tool fast while still giving you a practical quality-control step before production use.
Before using the output, check formatting, special characters, line breaks, file names, URLs, units, numbers, and mobile display when relevant. If the result affects SEO, code, design, business documents, analytics, or customer-facing material, compare it against your original requirement and fix any context-specific detail before publishing.
Manual work is fine for one-off tasks, but repeated manual formatting or checking is slow and easy to make inconsistent. Free Online PowerPoint Compressor helps standardize the process, reduce copy-paste mistakes, and produce a cleaner starting point so you can spend more time on review, judgment, and improvement.
Yes. The compressed file is a valid .pptx and opens normally in PowerPoint, Google Slides, and LibreOffice Impress.
Yes. Only images inside slides are compressed. All animations, transitions, text, and shapes remain intact.
Up to 200MB per file. For larger files, consider splitting the presentation into sections first.
Many presentations contain PNG or BMP images which are much larger than JPEG. Converting to JPEG at 80% quality reduces size significantly with minimal visible quality loss.
The file is sent to our server for processing via the /api/compress-powerpoint endpoint, then immediately deleted after compression. The compressed file is returned as a download.
Yes. Free Online PowerPoint Compressor is designed as a free browser-based utility for quick personal, learning, and professional workflows.
No. You can use Free Online PowerPoint Compressor directly in a modern browser such as Chrome, Edge, Safari, or Firefox.
Yes. The page is responsive and can be used on phones and tablets, although desktop is usually more comfortable for long input or repeated copy operations.
Use clean input, test with a small sample first, review the output carefully, and adjust any details that depend on your final use case.
In most cases, yes. You can use the generated or processed output in personal and commercial projects, but legal, financial, medical, or security-sensitive work should still be reviewed by a qualified person.
The tool is built for quick browser workflows. You should still avoid entering highly sensitive data unless the specific tool clearly states how the data is handled.
Many tools include copy or download actions. If a dedicated export is not available, you can usually copy the visible result manually.
Chúng tôi không chỉ thiết kế website, mà còn giúp doanh nghiệp xây dựng thương hiệu số mạnh mẽ. Cung cấp dịch vụ thiết kế website trọn gói từ thiết kế đến tối ưu SEO. Hãy liên hệ ngay với Tấn Phát Digital để cùng tạo nên những giải pháp công nghệ đột phá, hiệu quả và bền vững cho doanh nghiệp của bạn tại Hồ Chí Minh.
Chuyển text thành ASCII Art.
Tạo mã vạch Code128, EAN-13.
Kiểm tra file CSV hợp lệ.
Chuyển đổi Excel và CSV.
Công cụ API Documentation Generator miễn phí: Tạo tài liệu API từ OpenAPI/Swagger. Auto-generate docs, examples, và interactive API testing.
Công cụ Dockerfile Generator miễn phí: Tạo Dockerfile cho Node.js, Python, Java, Go, PHP. Multi-stage builds và best practices.
Tạo checklist hồ sơ giấy tờ online miễn phí. Mẫu có sẵn: xin Visa, đăng ký doanh nghiệp, hồ sơ xin việc. Theo dõi tiến độ, không bỏ sót giấy tờ.
Email template builder online free - Tạo email công việc miễn phí chuyên nghiệp. Mẫu email mời họp, xin nghỉ phép, báo cáo, cảm ơn.
Nén file Excel (.xlsx) online free, giảm dung lượng file Excel miễn phí lên đến 80%. Tối ưu hình ảnh trong spreadsheet, không làm mất dữ liệu. Xử lý 100% trên trình duyệt, bảo mật tuyệt đối.
Excel Formula Generator online miễn phí - Tạo công thức Excel từ mô tả tiếng Việt. 25+ formulas: VLOOKUP, IF, SUMIF, XLOOKUP, INDEX-MATCH. Examples thực tế.
Mã hóa file online với AES-256, bảo vệ file bằng mật khẩu an toàn. Encrypt/decrypt files trực tiếp trên trình duyệt, không upload server.
File to Base64 converter online free - Chuyển đổi file PDF, DOC, ZIP, bất kỳ file nào sang Base64 miễn phí. Encode files to base64 string.
