Are my files uploaded when I zip or inspect them?

No, archiving, metadata inspection and file conversion all happen locally in your browser. Files never leave your device.

Is there a limit on how many files I can add?

There's no fixed limit, but adding a very large number of files or very large total size depends on your device's available memory.

File Tools

Archive, inspect, hash and convert files right in your browser. From zipping a folder of files to checking a file's type or checksum, everything runs on-device with no upload.

19 tools

Sort by

Archive Format Converter

Convert between ZIP and uncompressed TAR archives.

New

Batch File Compressor

Bundle multiple files together into a single downloadable zip.

Batch File Renamer

Rename many files at once using a pattern, and download them as a ZIP.

Duplicate File Finder

Find identical files among a batch by comparing their content hash.

New

EPUB Metadata Viewer

View an EPUB ebook's title, author and other metadata.

File Checksum Verifier

Verify a downloaded file against a published SHA checksum.

New

File Encryptor / Decryptor

Encrypt a file with a passphrase using AES-GCM, or decrypt it back, entirely in your browser.

File Extension Changer

Rename a file's extension without converting its actual format.

New

File Joiner

Reassemble a file that was split into numbered chunks back into the original.

File Metadata Viewer

View a file's name, size, type and last-modified date.

New

File Name Cleaner

Sanitize file names by removing special characters, spaces and accents.

New

File Preview Viewer

Preview images, text, PDF, audio and video files instantly, without uploading them anywhere.

File Size Converter

Convert between bytes, KB, MB, GB, and their binary (KiB/MiB/GiB) equivalents.

File to Base64 Converter

Encode any file as Base64, or decode Base64 back into a downloadable file.

File Type Detector

Detect a file's true type from its byte signature, not just its extension.

GZIP Compressor

Compress or decompress a file using GZIP.

Hex Viewer

View the raw bytes of any file as a hex and ASCII dump.

New

Large File Splitter

Split a large file into smaller numbered chunks for easier transfer.

Zip & Unzip Files

Combine files into a ZIP archive, or extract files from one.

Privacy

File tools process everything you select entirely in your browser using local JavaScript/WebAssembly. Your files are never uploaded to a server.

Frequently asked questions

Related categories

PDF Tools Image Tools Link & QR Tools Audio Tools Video Tools Developer Tools SEO & Web Tools Data & Spreadsheet Tools Business Tools Social Media Tools