ZIP Extractor
Opens a .zip archive in your browser and lets you download the files inside individually…
Packs any set of files into a single .zip archive inside your browser, with a choice of compression level and nothing uploaded anywhere.
The ZIP File Creator packs any set of files into a single .zip archive inside your browser, with a choice of compression level and nothing uploaded anywhere. It runs as plain JavaScript inside the page, which means there is no upload step, no queue and no size limit imposed by a server — the only limit is your own device.
| Runs | Entirely in your browser — no upload, no server |
|---|---|
| Compression | Deflate, the standard ZIP method every tool can read |
| Store mode | No compression at all — fast, and right for files already compressed |
| Encryption | Not supported, and the page says so rather than pretending |
Everything is held in memory while the archive is built, so very large sets — several gigabytes — will exhaust the tab before they finish. No encryption, and no split or multi-volume archives.
Opens a .zip archive in your browser and lets you download the files inside individually…
Lists every file inside a .zip with its size, compressed size, saving and date, without…
Zips the same files at every compression level and shows the real size and time for each, so…
Packs an entire folder into one .zip in your browser, keeping the subfolder structure, with an…
Compresses text or a file to gzip, deflate or raw deflate using the browser's built-in…
Decompresses a .gz, zlib or raw deflate file in your browser and shows the text or hands back…
Measures the real gzipped size of CSS, JS, HTML or JSON and shows the transfer time saved…
Formats, indents and validates JSON with precise error positions, key sorting and a…
Checks whether JSON is valid and reports the exact line, column and reason for the first error…
Strips all whitespace from JSON to produce the smallest valid output, showing the bytes saved.