AntiUpload
50+ file tools that never upload your files
AntiUpload launched on June 16, 2026 with 2 votes.
What it does
AntiUpload is 50+ free file tools — PDF, image, Office, audio and video — that run 100% in your browser. Convert, compress, merge, OCR, sign and more, with nothing uploaded: your files never leave your device. No sign-up, no watermarks, no size limits. Because it is fully client-side (WebAssembly), it even works for files you would never put on someone else's server.
Private PDF, image, video and audio tools that process file contents on your device. No file uploads, cloud copies or accounts; free to use in your browser.
64 tools for PDFs, video, images and audio run inside this browser tab using WebAssembly and WebCodecs. No file upload, cloud-processing copy or account. Free to use—and the local file boundary is verifiable in your browser's Network panel. Most online file tools begin by copying your document to somebody else's server. AntiUpload removes that transfer entirely: the file, its name and its contents stay on your device from input to download. Conversion runs in a Web Worker on your CPU using WebAssembly. No account or cloud retention is required. Advertising and aggregate analytics remain outside the file-processing boundary. Close the tab and the working file data isfrom antiupload.com
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