MetaStrip, strip hidden metadata from files

MetaStrip is a browser-based tool for stripping hidden metadata from files before they are shared. It is built for common privacy-sensitive situations such as sending photos, documents, or AI-generated work, where embedded details like location data, device information, author names, or edit history may travel with the file.

It processes files entirely in the browser, with no uploads to external servers and no temporary server cache. The page says files are dropped in locally, the tool reads their metadata with libraries such as piexifjs and pdf-lib, shows what is embedded, and writes a clean copy back out. MetaStrip also presents a batch mode for up to 20 files at once, and the supported file types listed on the page include JPEG, PNG, WebP, HEIC, PDF, DOCX, XLSX, PPTX, MP4, MOV, MP3, M4A, FLAC, and WAV.

The FAQ states that it removes different metadata depending on file type. For photos, that includes GPS coordinates, EXIF data, IPTC, XMP, C2PA content credentials, AI generation tags, embedded thumbnails, and timestamps. For PDFs and Word, Excel, and PowerPoint documents, it removes fields such as author, creator app, producer, title, subject, keywords, custom properties, tracked changes, comments, revision history, and template metadata. For video and audio files, it strips items including device details, handler vendor IDs, timestamps, ID3 tags, album art, RIFF LIST/INFO chunks, Broadcast Wave extensions, and iXML metadata. The page also says the file content and quality stay the same, with only hidden metadata removed.

MetaStrip is open source under the MIT license, and the code is on GitHub. It is described as working on mobile and desktop browsers, online or offline after the first load. The pricing section says it is free to use, with no ads, tracking, signup, upload limits, or premium tier, and it mentions an optional Ko-fi donation.