Catalogus

Inspect, edit, filter, and export cookies for the current tab — locally in Chrome. Pro remembers sites, saved presets, and ExtHub...

Track multiple target dates with live days/hours/mins/secs, presets, and a toolbar badge. Pro saves presets, history, and ExtHub...

Compare two text blocks with a simple colored line diff. Pro saves snippets, extra format options, and ExtHub sync.

Split hostnames into eTLD+1, flag lookalikes and Punycode, keep a local trust list, and show an optional page banner. Pro saves p...

Design CSS gradients with multiple stops, linear/radial/conic modes, presets, favorites, and page preview. Pro saves snippets, ex...

Hash text locally with Web Crypto SHA-256, SHA-384, and SHA-512. Pro saves snippets, extra format options, and ExtHub sync.

Inspect response headers for the active tab — security checklist, search, HEAD/GET, and export. Pro saves searches/presets and sy...

Generate secure passwords with custom length and character sets. Pro remembers sites, saved presets, and ExtHub sync.

Stopwatch with lap times. Runs while the popup is open. Pro saves presets, history, and ExtHub sync.

Reading progress bar with percent, milestones, colors, top/bottom placement, and per-site control. Pro saves presets, history, an...

Hover images on a page to see natural and displayed dimensions. Pro remembers this site, presets, and ExtHub sync.

Convert text to a clean URL slug and copy it instantly. Pro saves snippets, extra format options, and ExtHub sync.

Find HTML tables on the active page and export the selected one as CSV. Pro saves searches/presets and syncs via ExtHub.

Decode JWT header and payload JSON locally without signature verification. Pro saves snippets, extra format options, and ExtHub s...

Find duplicate tabs in the current window and close extras, keeping the first. Pro saves searches/presets and syncs via ExtHub.

Responsive viewport frames on the page — device presets, custom size, breakpoint guides, and saved frames. Pro remembers sites, s...

Convert between px, rem, and em using a local base font size. Pro saves snippets, extra format options, and ExtHub sync.

Explain a classic 5-field cron expression in plain language. Pro saves presets, history, and ExtHub sync.

Encode and decode common HTML entities locally. Pro saves snippets, extra format options, and ExtHub sync.

Convert Unix timestamps to dates and back locally. Pro saves presets, history, and ExtHub sync.

Dim the page around a movable reading spotlight band. Pro saves presets, history, and ExtHub sync.

Reload the current tab while bypassing the browser cache. Pro saves searches/presets and syncs via ExtHub.

Convert tabs and spaces and adjust indentation locally. Pro saves snippets, extra format options, and ExtHub sync.

Sort, reverse, dedupe, or shuffle lines of text locally. Pro saves snippets, extra format options, and ExtHub sync.