Lz String Compressor
Use Lz String Compressor on AboveTool to compress, pack, or estimate sizes in your browser — free, private, no signup.
Lz String Compressor
Used to compress strings using the LZ-String algorithm for storing compressed data in localStorage, cookies, or URL parameters.
About Lz String Compressor
Lz String Compressor is used to compress strings using the LZ-String algorithm for storing compressed data in localStorage, cookies, or URL parameters. It applies LZ-based compression and encodes the output in a format safe for the chosen storage target (Base64, URI, or UTF-16). LocalStorage has a 5MB limit per origin — LZ-String can compress JSON state by 60-80%, significantly extending how much you can store. Lz String Compressor runs free in your browser at abovetool.com — no signup required.
How to use
- Paste text or upload files depending on the tool.
- Click the primary action to minify, gzip, zip, estimate, or generate config.
- Copy or download results — processing stays in your browser.
Features
- Text minify, gzip probes, ZIP create/inspect/extract
- Ratio and bandwidth estimates with local CompressionStream
- Config sketches for nginx, Apache, Express, Vite, and more
- Dedicated gzip/CSS/font/PWA tools keep their own UIs
Frequently asked questions
What does Lz String Compressor do?
Lz String Compressor is used to compress strings using the LZ-String algorithm for storing compressed data in localStorage, cookies, or URL parameters.
How does Lz String Compressor work?
It applies LZ-based compression and encodes the output in a format safe for the chosen storage target (Base64, URI, or UTF-16).
Any tips for using this tool?
LocalStorage has a 5MB limit per origin — LZ-String can compress JSON state by 60-80%, significantly extending how much you can store.
Is Lz String Compressor free on AboveTool?
Yes. Lz String Compressor is free to use on abovetool.com with no account required.