Offline Access
Save the basic tools before disconnecting, then add only the larger packs you need. Text recognition, DuckDB analytics and the architecture whiteboard have separate downloads. Everything is saved in this browser; no account or installation is needed.
Connection: Online
Saved in this browserChecking saved packages…
Basic tools
Checking size…All tool pages and common processors, including JSON, text, images and SQLite.
Text recognition (OCR)
Checking size…Extract English and Simplified Chinese text from images offline.
DuckDB analytics
Checking size…Query local CSV, JSON and Parquet files with DuckDB SQL offline.
Architecture whiteboard
Checking size…Keep the drawing editor and its fonts ready for offline use.
Sizes are before browser compression. Optional downloads also save any missing basic files. Reference articles are not included. Your inputs and uploaded files are never part of these packages.
If this page appeared while opening another tool
That page was not saved in your browser. Open a previously saved tool from the library, or reconnect and save the basic tools here. Add the optional pack when you need OCR, DuckDB or the whiteboard offline.
What is saved on this device?
Offline storage contains static site pages and program files. It does not contain the input you type, uploaded files, HAR captures, passwords or generated keys. Favorites, recently visited tool names and formatting preferences use local storage separately. Clearing site data resets them; they do not sync across devices.
Updates and storage
Updates download replacements for your saved packages before switching versions. Packs you have not saved are not added automatically. Close existing tabs to finish an update. If a download fails, your previous saved tools remain available.
Existing full offline downloads keep all packs during migration. Remove optional packs above to save space and stop downloading them in future updates. Browsers may evict cached files when storage is low. Removing offline files here keeps favorites and formatting preferences.