Useful File Tools starting points

Jump into a common task, then use the full directory below for more specialized tools.

Folder Size Calculator Unzip Files Online Multi-ZIP Extractor GZIP Decompressor ZIP Compressor TAR Extractor

18 file tools

File Tools

Free browser-local ZIP, TAR, GZIP, file split/join, duplicate finder, batch rename, folder size, file list, and file-type tools.

Create → inspect → extract → reorganize → verify

Start with the actual file job rather than a flat list. Compatible files stay on-device, while format, memory, encryption, and browser limitations remain explicit.

Create & compress

Build ZIP/GZIP outputs locally and understand when compression may not reduce already-compressed files.

ZIP File CreatorBundle local files into a ZIP without uploading them; use the specialist tools when the job is extraction, merging, or splitting.ZIP CompressorCompress files into a ZIP locally; already-compressed media may shrink little.GZIP CompressorCompress a single file as gzip without uploading it.

Open & extract archives

Inspect or extract ZIP, TAR, and TAR.GZ archives locally with explicit format boundaries.

Unzip Files OnlineExtract ZIP contents in your browser without sending the archive to a server.ZIP File ViewerReview an archive structure without uploading it.TAR ExtractorExtract standard TAR/USTAR archives in the browser with safe-path normalization and per-file download.TAR.GZ ExtractorOpen gzip-compressed TAR archives in browsers that support DecompressionStream; no server upload is required.GZIP DecompressorOpen .gz data locally; gzip is a stream format and does not contain a multi-file directory like ZIP.

Archive tools

Combine ZIP contents or extract several ZIP archives in one browser-local operation.

ZIP MergerMerge ZIP archives locally, optionally prefixing entries by source archive to avoid collisions.Multi-ZIP ExtractorBatch-extract multiple ZIP files locally and package the extracted files into one combined ZIP with source folders.

Split, join & deduplicate

Break large files into parts, reconstruct them, or find byte-identical duplicates.

File SplitterCreate file chunks locally for storage or transfer workflows.File JoinerJoin split binary parts in the correct order without uploading them.Duplicate File FinderDetect byte-identical duplicates locally; matching filenames alone are not treated as duplicates.

Rename, inventory & inspect

Prepare filenames, summarize folders, export file lists, and inspect common signatures.

Bulk File RenamerRename many local files consistently with a before/after preview.Filename SanitizerPrepare safer portable filenames without altering file contents.Folder Size CalculatorInspect browser-selected folder size and composition locally.File List GeneratorCreate a file list for documentation, audits, or handoff without uploading the files.File Type CheckerCheck likely file type from signatures and metadata; this is not malware scanning or forensic certification.

All File Tools

File Tools

ZIP File Creator

Create a ZIP archive locally from files while keeping the established browser-only ZIP workflow and downloads.

File Tools

Unzip Files Online

Open a ZIP locally, inspect entries, and download selected files.

File Tools

ZIP File Viewer

Inspect ZIP filenames, paths, compressed sizes, and entry details locally before deciding what to extract.

File Tools

ZIP Compressor

Repack local files into a ZIP with browser-side compression and clear before/after byte totals.

File Tools

GZIP Compressor

Create a GZIP stream for one local file using the browser compression stream where supported.

File Tools

GZIP Decompressor

Decompress one GZIP stream locally with explicit browser-support and output-name boundaries.

File Tools

File Splitter

Split a local file into numbered binary parts with a visible plan and deterministic part naming.

File Tools

File Joiner

Reassemble ordered file parts locally with numeric part sorting and an explicit output download.

File Tools

Duplicate File Finder

Find exact duplicate local files by size and SHA-256, with progress and grouped results.

File Tools

Bulk File Renamer

Preview batch filename rules before downloading renamed copies, including prefixes, suffixes, numbering, and cleanup.

File Tools

Filename Sanitizer

Clean problematic filename characters and spacing with a browser-local preview.

File Tools

Folder Size Calculator

Summarize locally selected folder/file totals, extensions, and largest files without uploading the data.

File Tools

File List Generator

Generate a reusable file inventory from browser-selected files or folders with local export.

File Tools

File Type Checker

Inspect common magic bytes, MIME hints, extensions, and file size locally.

File Tools

TAR Extractor

Open a TAR archive locally, inspect its entries, and download regular files without uploading the archive.

File Tools

TAR.GZ Extractor

Decompress a TAR.GZ or TGZ archive locally, inspect the contained TAR, and download regular files.

File Tools

ZIP Merger

Combine the contents of multiple ZIP archives into one new ZIP with explicit duplicate-name handling.

File Tools

Multi-ZIP Extractor

Open several ZIP archives at once, review their entry counts, and collect extracted contents into one download.