Web Utility Tools

Base64 Encoder/Decoder

Encode text or files to Base64 and decode it back, punched onto an 80-column card as you type. UTF-8, URL-safe, padding control.

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Binary Converter

Text to binary and back on a front panel of lamps and switches, with decimal, hex and octal readouts for any number.

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Case Converter

UPPERCASE, lowercase, Title, Sentence, camelCase, snake_case, kebab-case and more, set from a printer's type case onto a composing stick.

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Diff Checker

Compare two texts on a galley proof marked with real proofreader's marks: dele, caret and margin insertions. Copy as unified diff.

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Fancy Text Generator

Turn plain text into 25+ fancy Unicode font styles (bold, cursive, bubble, gothic) to copy and paste anywhere.

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Invisible Character

Copy invisible Unicode characters for blank usernames and empty messages, with a generator and a paste-to-test checker.

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HTML Entity Encoder

Encode special characters to HTML entities and decode them back on a 1940s decoder ring, with a searchable code book of every named entity.

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JSON Formatter and Minifier

Format, validate and minify JSON as you type, printed on green-bar paper. Sort keys, spot errors, copy the result.

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JSON to YAML/CSV Converter

JSON, YAML and CSV in any direction on a three-part carbonless form: write on one sheet, the other two copies fill in, tear one off to copy.

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Lorem Ipsum Generator

Lorem ipsum by paragraphs, sentences or words, chiselled into a stone inscription. Plain or HTML, with the Cicero source.

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Markdown Previewer

Write Markdown on a manuscript and see it typeset live on a book page with a running head, folio and drop cap.

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Morse Code Converter

Text to Morse and back on a telegraph desk; Play taps the message out on a straight key at real Morse timing.

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Text to Handwriting

Convert typed text into realistic handwritten pages with handwriting styles, ink colors and ruled paper. PNG output, no watermark.

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Regex Tester

Test a regular expression on a radar scope: every match paints on as the sweep passes, with groups, flags and a replace preview.

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URL Encoder/Decoder

Encode and decode URLs and query strings on an airline bag tag; the host is the destination, the claim stub carries the result.

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UUID/GUID Generator

v4, v7 and v1 UUIDs from a take-a-number dispenser: pull the tab and a ticket tears off; bulk, formats, and a reader for any UUID.

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Word & Character Counter

Count words, characters, sentences and paragraphs on a typewriter whose odometer wheels roll as you type, with reading time.

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Word Frequency Counter

Count how often each word appears; the ranking is a drawer of library catalog cards that riffle into order.

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Zalgo Text Generator

Turn any text into cursed glitch text with stacked Unicode marks: adjustable intensity, one-click copy.

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Color Converter

HEX, RGB, HSL, HSV and CMYK on a 24-patch color checker card, with a loupe on the color you are editing and WCAG contrast.

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Color Palette Generator

Harmonies as a paint-store fan deck: named, coded chips with five shades each. Copy any hex or the whole palette as CSS variables.

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CSS Box-Shadow Generator

Design box-shadow by moving studio lights around the subject; the shadow falls away from each light and the CSS follows.

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CSS Gradient Generator

Linear, radial and conic gradients on a sky at dusk; drag the sun to set the angle, start from real twilight palettes.

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Aspect Ratio Calculator

Calculate and lock aspect ratios, with the frame etched live on a camera viewfinder; presets, common sizes, CSS aspect-ratio.

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Image Compressor

Compress an image to a target size on an airport bag drop: the scale counts the KB down, an allowance turns the lamp green or red; JPEG, WebP, PNG.

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Compress Image to KB

Compress JPG, PNG or WebP images to an exact target file size like 50KB, 100KB or 200KB, fully in your browser.

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QR Code Generator

QR codes for URLs, text, Wi-Fi, email, phone and SMS on a boarding pass; set correction, size and colours, tear the stub to download PNG or SVG.

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SVG Placeholder Generator

SVG placeholders at any size, colours and text, hung in a gallery frame that resizes as you type; copy, data URI or download.

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Transparent PNG Generator

Blank or tinted transparent PNGs at any size, glazed into a sash window that resizes to the ratio; download, data URL or CSS.

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Video to Audio Converter

Extract MP3 or WAV from a video on a reel-to-reel dubbing deck, entirely in the browser: reels turn and VU meters swing with the real dub.

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YouTube Thumbnail Downloader

Preview and download any YouTube video's thumbnail in every available size, up to HD 1280x720. Works for Shorts.

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Hash Generator

MD5, SHA-1, SHA-256, SHA-384, SHA-512 and CRC-32 for text or files, rolled onto a fingerprint card, with a verify line that names the matching hash.

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JWT Decoder

Decode and verify JSON Web Tokens as a passport: claims on the data page, the expiry stamped red or green, HS/RS/ES signature checks in the browser.

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Secure Password Generator

Spin a safe dial to generate a strong random password from your browser’s cryptographic generator. Pick the sets, read the strength in bolts, take the key.

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Discord Timestamp Generator

Generate Discord timestamps that show in everyone's local timezone. All 7 formats, live previews, one-click copy.

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Epoch/Human Date Converter

Unix timestamps to dates in any zone and back, on a core log of computer time whose marker drops to the moment you enter.

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Unix Timestamp Converter

Epoch to date and back on a split-flap departures board: local, UTC, ISO 8601 and relative, with a ticking epoch clock.

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