Pick a card. Solve one small thing.

Small tools in your browser for the moments between bigger tasks. No sign-up required, ready when you need them.

Browse the deck

The ToolDeck approach

About this deck

Small tools for everyday tasks.

  • Now in the deckEN / JA

    15tools

    Across 6 categories with tools

  • 01

    One tool, one job.

    Each tool focuses on a specific task, so you can open it, get things done, and move on.

  • 02

    A small, curated collection.

    We focus on keeping the collection small and making each tool simple and useful.

  • 03

    Guides in English and Japanese.

    Every tool comes with a usage guide in both English and Japanese.

  • 04

    Runs entirely in your browser.

    Tools process your data in the browser. No account or upload is required.

The deck

Browse by category

Pick a category to find your card.

Text4

Count characters and lines, tidy up formatting, and convert text between common styles. Handy for posts, reports, and everyday editing.

Character Counter

Count characters and lines, with or without spaces

  • Analyzer
  • Calculation

Duplicate Line Remover

Remove repeated lines and keep only the first occurrence of each line

  • Formatter

Whitespace Remover

Strip unwanted spaces, tabs, and line breaks from pasted text

  • Formatter

Word Counter

Count words, characters, reading time, and word frequency in your text

  • Analyzer
  • Calculation

Converter3

Swap formats, encode strings, and convert units in a couple of clicks. The conversions you would normally look up in a search engine, done right here.

Base64 to Text

Turn a base64 string back into readable text, standard or URL-safe

  • Decoder

Text to Base64

Turn any text into a base64 string, standard or URL-safe

  • Encoder

URL Encoder

Encode or decode text for query parameters or full URLs

  • Encoder
  • Decoder

Code1

Format, convert, and validate code without leaving the browser. The small cleanup tasks that come after writing are handled in one place.

JWT Decoder

Read a JWT's header and claims, see when it expires, and verify its signature

  • Decoder
  • Analyzer

CSS2

Try out values, see the result, and copy the final snippet. Generate, format, and inspect CSS on a single page.

Border Radius Generator

Adjust all four corners to find the right radius for your interface.

  • Generator

SVG Text Animation Generator

Draw outlines and fills with SVG stroke animation.

  • Generator

Web1

Clean up URL lists and handle everyday link tasks without leaving the browser. Paste links, tidy them up, and open them when ready.

Bulk URL Opener

Open many URLs at once without duplicates or tracking tags

  • URL

Image4

Resize, convert, and adjust images without uploading them. Files are processed on your device and never leave it.

Base64 to Image

Turn a base64 string into a downloadable image

  • Decoder

Dummy Image Generator

Generate placeholder images and pad them to an exact file size

  • Generator
  • Download

Image to Base64

Turn an image into a base64 string you can paste anywhere

  • Encoder

YouTube Thumbnail Downloader

Extract YouTube thumbnails from a video URL or ID and save them at full size

  • URL
  • Download

FAQ

Frequently Asked Questions

Good to know before you get started.