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ToolDesk

ToolDesk — free browser-based utility tools

Browser-native toolkit

Everything runs in your browser.

Quick access

Pomodoro Timer

Compute

Digital & Analog Clock

Compute

Schedule Poll

Text

Password Generator

Generate

Typing Speed Test

Compute

Bill Splitter

Compute

Design(8)

Color Converter

Design

Convert between HEX, RGB and HSL with a live preview and one-click copy.

Image Compressor

Design

Compress images in your browser. Nothing is uploaded. Compare before/after size.

Image Resizer

Design

Resize images in your browser. Set width/height or lock aspect ratio. No upload.

Background Remover

Design

Remove photo backgrounds with AI in one click. In-browser, no upload, free.

Image Format Converter

Design

Convert between PNG, JPG and WebP. Runs in your browser — images are never uploaded.

EXIF Remover

Design

View and remove photo location and metadata in your browser. No upload, nothing sent.

Contrast Checker

Design

Compute the WCAG contrast ratio between text and background colors and check AA/AAA compliance.

Image Cropper

Design

Crop images in your browser. Drag to select, aspect-ratio presets, no upload.

Dev(13)

JSON Formatter

Dev

Prettify or minify JSON with error position. Auto-detected on paste.

Base64

Dev

Encode or decode text to and from Base64. Handles UTF-8 correctly.

Text Diff

Dev

Compare two texts line by line. Additions and deletions shown in color.

JWT Decoder

Dev

Decode a JWT header and payload in your browser. The token is never sent anywhere—everything is processed on your device. Does not verify the signature.

Timestamp Converter

Dev

Convert Unix timestamps (s/ms) to dates and back. Shows UTC and local time together.

Regex Tester

Dev

Test regular expressions in your browser. Highlights matches and capture groups instantly.

UUID Generator

Dev

Generate cryptographically random UUID v4 in bulk. Uppercase and hyphenless options.

Hash Generator

Dev

Compute SHA-1 / SHA-256 / SHA-384 / SHA-512 hashes of text in your browser.

URL Encode

Dev

URL-encode or decode Japanese text and symbols. Switch between component and whole-URL modes.

CSV ⇄ JSON

Dev

Convert CSV to JSON and JSON to CSV. Supports header rows and tab-delimited data.

Cron Parser

Dev

Parse a cron expression (min hour day month weekday) and list the next run times.

YAML ⇄ JSON

Dev

Convert YAML to JSON and JSON to YAML. Handy for inspecting and converting config files.

Dummy Data Generator

Dev

Generate test data — names, kana, email, phone, address, company — as JSON or CSV.

Generate(9)

QR Code Generator

Generate

Generate a QR code from a URL or text. Download as PNG or SVG.

Password Generator

Generate

Generate secure passwords with cryptographic randomness. Choose length and character sets.

Spin the Wheel

Generate

Type options and spin the wheel. Great for raffles, picking order, and giveaways.

Merge PDF

Generate

Combine multiple PDFs into one. Processed in your browser — files are never uploaded.

Split PDF

Generate

Split a PDF into pages or extract a page range. In-browser, no upload.

Rotate PDF

Generate

Rotate PDF pages by 90°. All pages, processed in your browser.

Image to PDF

Generate

Combine JPEG/PNG images into a single PDF. Reorder pages, no upload needed.

PDF to Image

Generate

Convert each PDF page to a PNG image and download. In-browser, no upload.

QR Code Reader

Generate

Read a QR code from an image. Decoded in your browser, no upload. Open URLs directly.

Compute(10)

Character Count

Compute

Count characters, words, lines and bytes as you type. Handles Japanese and emoji correctly.

Date Calculator

Compute

Days between two dates, or N days before/after. Enter as YYYY-MM-DD.

Unit Converter

Compute

Convert length, weight, temperature and data size instantly.

Typing Speed Test

Compute

Type the shown sentence to measure your typing speed (WPM) and accuracy.

Age Calculator

Compute

Instantly get age in years, Japanese counted age, zodiac, era name, school grade, and days to the next birthday from a birth date.

Discount & Percent Calculator

Compute

Instantly compute discounted price, tax in/out, "what percent", and rate of change. Live results.

Pomodoro Timer

Compute

A timer for the Pomodoro Technique: repeat 25-min focus sessions with short breaks. Auto-switches between focus and break.

Digital & Analog Clock

Compute

Show the real-time current time in digital, analog, or both. Go fullscreen to use it as a desk clock.

Time Zone Converter

Compute

Convert a time in one region to cities worldwide. Great for scheduling meetings; DST-aware.

Bill Splitter

Compute

Split a bill instantly, or settle up who pays whom across multiple expenses (fewest transfers, weights) when some already paid.

Text(7)

Schedule Poll

Text

Pick candidate dates, share a URL, collect answers and auto-rank the best date.

Fancy Text Generator

Text

Turn text into bold, italic, script and other Unicode styles. Great for social bios.

Case Converter

Text

Convert between camelCase, snake_case, kebab-case, UPPER, lower and more at once.

Markdown Preview

Text

Preview Markdown as HTML as you type. Sanitized output for safe rendering.

Romaji Converter

Text

Convert hiragana and katakana to Hepburn romaji, with passport-style long-vowel omission.

Full-width / Half-width Converter

Text

Convert between full-width and half-width for alphanumerics, symbols, spaces, and katakana. Voiced and semi-voiced marks handled correctly.

Text Cleanup

Text

Remove duplicate lines, sort, drop blank lines, trim whitespace, and add numbering with one click.

Think & Plan(6)

KPT Retrospective

Think & Plan

Organize retrospectives with Keep / Problem / Try. Saved in your browser; export and import as JSON. No upload.

Eisenhower Matrix

Think & Plan

Sort tasks into four quadrants by urgency and importance to see priorities at a glance. Saved in your browser; export to JSON. No upload.

Logic Tree

Think & Plan

Break down a problem or goal into a branching tree for MECE thinking. Saved in your browser; export to JSON. No upload.

9-Box Goal Grid

Think & Plan

A goal-setting sheet that expands a central goal into 8 elements and each into 8 actions (9×9 = 81 cells). Saved in your browser; export to JSON. No upload.

Kanban Board

Think & Plan

Manage tasks with columns and drag-and-drop cards to see progress at a glance. Saved in your browser; export to JSON. No upload.

Idea Tree

Think & Plan

Branch out ideas from a central theme for brainstorming and organizing thoughts. Saved in your browser; export to JSON. No upload.

About ToolDesk

ToolDesk is a site with 50+ handy utilities you can use right in your browser — no login, no installation. Format JSON, compress and crop images, generate and read QR codes, count characters, generate passwords, convert units and colors, and more — knocking out everyday micro-tasks on the spot.

Most tools process your input entirely in the browser without sending it off your device. Because images and text are not uploaded to a server, you can work with sensitive data safely (only the scheduling tool, which you share with participants, stores data on a server to make sharing work).

It supports English and Japanese and works on mobile. Favorites and a recent-tools list get you back to what you use most. No account is required, and everything is free to use.

Our guides explain how the tools work and when to use each. Guides