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KEYBOX · FREE TOOLS

Document & image preview

Preview DOCX, Excel, PPTX, CSV, text, images and ZIP file listings locally. No uploads or office software installation required.

✓ No sign-up✓ Local processing✓ Free to use

Open a local file

Processed only on this device

Drop your file here

Or choose a file from your device

Office · CSV · Text · Images · ZIP

Text / CSV: up to 2 MiB; images: 10 MiB; Office / PDF / ZIP: 20 MiB.

You can also choose cloud files: sign in, unlock your space and select a file to decrypt locally. Cloud videos stream in segments without loading the entire file into memory.

GET STARTED

How to use Document & image preview

  1. Choose or drop a DOCX, XLSX, XLS, PPTX, CSV, text, image or ZIP file.
  2. Browse by format: switch worksheets, navigate slides or select text encoding.
  3. ZIP files show a directory listing. Close the preview to view another file.

Previewing does not modify your files. Choose local files again after closing the page.

Frequently asked questions

Will Office documents keep their original layout?

Previews focus on content. Complex styles, formulas and animations may differ. Legacy DOC and PPT are not supported; convert to DOCX or PPTX first.

What if text looks garbled?

The tool detects UTF-8, UTF-16 and GB18030 when possible. You can also choose an encoding manually in text preview.

Can I extract ZIP files?

Only a list of files is shown. Extraction, editing and execution are not supported.

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Cloud direct preview

Sign in and unlock your space to read encrypted files from R2 with temporary access and preview videos, audio, documents, and images in your browser.

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Shared file direct preview

Paste a Keybox share link and use its password to decrypt in your browser and preview directly from R2.

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Video player

Open local MP4 and WebM videos in your browser without uploading or registering. Play, pause, seek and watch in full screen.

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Audio player

Play local MP3, WAV, OGG, M4A and FLAC audio for free in your browser. No uploads or account required.

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PDF reader

Open local PDFs in your browser and read page by page without uploading. Free, no account needed, with file contents staying on your device.

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Encrypted backup recovery

Restore .keybox files locally in your browser using the original encryption password, share password or new export password. Save the original file without signing in.

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