Small, fast tools. No accounts, no ads, everything runs locally where possible — the store listing’s permissions are the whole story.
Modify request, response and CORS headers by rule. ModHeader import built in.
Read EPUB and FB2 right in a browser tab.
Identify any font on any page, on hover.
Any table on any page to clean CSV, one click.
Every Chrome settings page in one searchable panel.
One-click e-book conversion from your toolbar.
Run real Python in a browser tab — offline, nothing installed.
Type á é ñ ü ç and other accented characters instantly.