How does GZIP compare to ZIP for a single file?

For compressing one file, GZIP typically achieves similar or better compression — the main difference is GZIP compresses a single stream, while ZIP is built to bundle multiple files together.

Can I decompress a .gz file I downloaded from somewhere else?

Yes, as long as it's a standard GZIP file, this tool decompresses it back to the original regardless of where it came from.

Is GZIP the same thing as a .tar.gz file?

Not quite — .tar.gz is a TAR archive (which can hold multiple files) that's then been GZIP-compressed. This tool handles GZIP compression on a single file; use the Archive Format Converter for TAR bundling.

Does GZIP Compressor upload my files to a server?

No. GZIP Compressor runs entirely in your browser using on-device processing, your files never leave your device.

GZIP Compressor

Compress or decompress a file using GZIP.

Runs in your browser

Drop any file here

Choose File

Uses your browser's native Compression Streams API, works in current Chrome, Edge, Firefox and Safari.

About this tool

GZIP is one of the most widely supported compression formats on the web and in developer tooling — servers compress responses with it, log files get archived in it, and many command-line tools expect .gz input. This tool compresses a file into GZIP format, or decompresses a .gz file back to its original, directly in your browser, useful when you need standard gzip-compatible output without installing command-line tools.

Frequently asked questions

Zip & Unzip Files

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

File Size Converter

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

File Type Detector

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

Duplicate File Finder

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

Batch File Renamer

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

File Extension Changer

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

Hex Viewer

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

File to Base64 Converter

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

File Metadata Viewer

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

File Checksum Verifier

Verify a downloaded file against a published SHA checksum.

Archive Format Converter

Convert between ZIP and uncompressed TAR archives.

New

File Preview Viewer

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

PDF Tools

Merge, split, compress and convert PDF files.

Image Tools

Compress, resize, crop and convert images.

Link & QR Tools

Shorten links and generate QR codes and barcodes.

Audio Tools

Convert audio files and turn text into speech, or speech into text.

Video Tools

Compress and process video files, right in your browser.

Developer Tools

JSON, encoding, hashing and text utilities for developers.

SEO & Web Tools

Meta tags, sitemaps, schema markup and other on-page SEO utilities.

Data & Spreadsheet Tools

Clean, convert and inspect CSV, TSV and tabular data.

Business Tools

Invoices, quotations, receipts and other business documents.

Social Media Tools

Resize images for social platforms, count hashtags and preview posts.