Catalogus

Convert length, mass, temperature, volume, area, speed, data, and time with a live all-units board. Pro remembers sites, saved pr...

PIN-locked local password vault with search, generator, and encrypted backup on this device. Pro remembers sites, saved presets,...

Measure words, characters, reading time, and keyword stats from selection, page, or a local pad. Pro saves snippets, extra format...

Multi-city world clock with a saved watchlist, meeting-time conversion, and a live toolbar badge. Pro saves presets, history, and...

Find missing and empty image alt text on this page. Pause all. Free stays local. Pro syncs reports via ExtHub.

Encode and decode Base64 locally. Live, URL-safe, wrap. Free stays local. Pro syncs named pads via ExtHub.

Clear selected browsing data from this profile with one confirmation. Pro saves presets, history, and ExtHub sync.

Change the case of selected page text without leaving the tab. Pro saves searches/presets and syncs via ExtHub.

View and edit cookies for the current tab locally in your browser. Pro remembers sites, saved presets, and ExtHub sync.

Compare two texts with a local line-level diff view. Pro saves snippets, extra format options, and ExtHub sync.

Find and close duplicate tabs with the same URL in this window. Pro saves reports, export, and ExtHub sync.

Create SHA hashes of text locally with Web Crypto. Pro saves snippets, extra format options, and ExtHub sync.

Format, minify, and validate JSON locally in your browser. Pro saves snippets, extra format options, and ExtHub sync.

Apply a clean print view on the current page and print locally. Pro remembers sites, saved presets, and ExtHub sync.

Save and restore scroll position per page URL on this device. Pro saves presets, history, and ExtHub sync.

Copy the current tab title and URL as Markdown, HTML, or plain text. Pro saves searches/presets and syncs via ExtHub.

Group tabs in the current window by website domain. Pro saves searches/presets and syncs via ExtHub.

Export HTML tables from the current page to CSV locally. Pro saves reports, export, and ExtHub sync.

Generate version-4 UUIDs locally and keep a short history. Pro saves snippets, extra format options, and ExtHub sync.

Resize the browser window to common device and desktop sizes. Pro saves searches/presets and syncs via ExtHub.

Periodic break reminders using alarms, notifications, and toolbar badge. Pro saves presets, history, and ExtHub sync.

Simple keyboard-friendly calculator in a popup. Pro saves presets, history, and ExtHub sync.

Convert text between common case styles in one click. Pro saves snippets, extra format options, and ExtHub sync.

Base64 and URL encode/decode tools in a simple textarea workspace. Pro saves snippets, extra format options, and ExtHub sync.