Red Digits

Type accented characters, diacritical marks & special symbols instantly. One-click grid for á é í ó ú ñ ä ö ü ç and more.

Find the font on any website. Point at text to see its family, size, weight and the font actually rendered, then copy CSS.

One-click access to Chrome settings. A toolbar menu with shortcuts to Privacy, Downloads, Site permissions, and more.

Open and read EPUB & FB2 files in your browser. Drag any e-book, pick a theme, search the text. Local, fast, no upload, no signup.

🛠️ Modify HTTP headers, redirect URLs & block requests. Provably local MV3 ModHeader alternative — no account, no telemetry.

EPUB to MOBI converter for Chrome. Convert EPUB to MOBI and MOBI to EPUB in one click — Kindle-ready, nothing to install.

Capital letter converter for any text. Uppercase, lowercase, title case, sentence case. Right-click selected text to convert.

Python compiler, IDE and interpreter in your browser. Learn Python by running it — offline, with numpy, pandas and turtle.

Interactive star map & night sky atlas: real stars, 88 constellations, galaxies & nebulae over DSS sky photos. Free.

HTML table to CSV exporter for any web page. Right-click any table to export as CSV, JSON, TSV, or Markdown. Local, fast.

Scroll progress indicator at the top of every page. 8 colors, adjustable thickness, hide per-tab. Minimal reading progress bar.

Transparent background maker for any image. Right-click or drop to make background transparent. No upload, no sign-up, local.

🌳 See any page's HTML as an interactive DOM tree in a side panel. Search it, highlight elements, copy CSS selectors.

Visual bookmarks and speed dial tiles on every new tab. Dials are Chrome bookmarks, so they sync across your devices.

📐 Draws .puml files and plantuml code blocks as UML diagrams in the page. No server, works offline. Free UML diagram tool.

PDF Tools toolkit: rotate, split, merge, compress, extract pages. Local-only, no upload, no signup. Right-click PDF to open.

Change the font size, spacing and colors on any website, hide the clutter, and save the look to apply on the sites you choose.

Clear the browser cache in one click, one hotkey, or one keyword. No popup, no new tab, no tracking.

JWT decoder plus Base64, JSON formatter, UUID generator, URL decode, hash & timestamp tools. Right-click any string to auto-decode.