# kamicrafts / open

> Fast, browser-native tools and toys. No login. No ads. No tracking. Everything runs in your browser.

## About

kamicrafts/open is a free collection of 63 browser tools and 12 interactive toys built by Kesava Mandiga.
Every tool and toy runs 100% client-side — no server, no upload, no account required.
Tools cover writing, design, development, SEO/AEO, product marketing, and general productivity.
Toys cover audio synthesis, visual art, simulation, generative design, and CSS craft.
The site has 8 CSS skin themes and full keyboard navigation.
Visit the collection at https://kamicrafts.com/open/

## Tools

Note: tools may appear in multiple sections when relevant to multiple audiences.

### Writers (12)
- [Case converter](https://kamicrafts.com/open/tools/case-converter/): Switch text to title, camel, snake, kebab, or upper case in one click.
- [Character counter](https://kamicrafts.com/open/tools/character-counter/): Live counts for characters, words, sentences, and reading time.
- [Lorem ipsum](https://kamicrafts.com/open/tools/lorem-ipsum/): Placeholder copy by paragraphs, sentences or words — any length, instantly.
- [Text cleaner](https://kamicrafts.com/open/tools/text-cleaner/): Remove extra spaces, line breaks, and duplicate lines fast.
- [Find & replace](https://kamicrafts.com/open/tools/find-replace/): Search and replace with regex and case sensitivity options.
- [Word frequency](https://kamicrafts.com/open/tools/word-frequency/): Frequency counts with a bar chart and CSV export.
- [Headline analyzer](https://kamicrafts.com/open/tools/headline-analyzer/): Rate headlines on emotion, power words and clarity.
- [Text diff](https://kamicrafts.com/open/tools/text-diff/): Paste two versions to see every insertion, deletion, and change highlighted side by side.
- [Clipboard manager](https://kamicrafts.com/open/tools/clipboard-manager/): Save, label, and search text clips in your browser.
- [Markdown editor](https://kamicrafts.com/open/tools/markdown-editor/): Live Markdown preview with HTML and MD export.
- [Readability scorer](https://kamicrafts.com/open/tools/readability-scorer/): Three grade-level scores tell you if your writing is too dense to read.
- [Release notes formatter](https://kamicrafts.com/open/tools/release-notes-formatter/): Group raw bullets into categorized notes with export.

### Designers (17)
- [Lorem ipsum](https://kamicrafts.com/open/tools/lorem-ipsum/): Placeholder copy by paragraphs, sentences or words — any length, instantly.
- [Color palette](https://kamicrafts.com/open/tools/palette/): Generate palettes by harmony rule with CSS variables.
- [Color converter](https://kamicrafts.com/open/tools/color-converter/): Enter a color once and get it in HEX, RGB, and HSL simultaneously.
- [Contrast checker](https://kamicrafts.com/open/tools/contrast/): Check whether your text and background color pass WCAG accessibility contrast requirements.
- [Gradient generator](https://kamicrafts.com/open/tools/gradient/): Visual CSS gradient editor with copyable output.
- [Box shadow](https://kamicrafts.com/open/tools/box-shadow/): Drag sliders to craft a shadow, copy the CSS.
- [Border radius](https://kamicrafts.com/open/tools/border-radius/): Adjust each corner independently and copy the exact border-radius CSS you need.
- [Glassmorphism](https://kamicrafts.com/open/tools/glassmorphism/): Tune blur, opacity, and tint, then copy the CSS.
- [Flexbox playground](https://kamicrafts.com/open/tools/flexbox/): Toggle align, justify, wrap, direction, and gap on a live container and copy the CSS.
- [CSS grid](https://kamicrafts.com/open/tools/grid/): Lay out rows, columns, and areas, then copy the CSS.
- [OG image generator](https://kamicrafts.com/open/tools/og-image/): Compose an Open Graph image and download the PNG.
- [Favicon generator](https://kamicrafts.com/open/tools/favicon/): Generate favicons from text, emoji or upload.
- [Screenshot beautifier](https://kamicrafts.com/open/tools/screenshot-beautifier/): Add background, padding, shadow, and frame, then export PNG.
- [Keyframe animator](https://kamicrafts.com/open/tools/keyframe-animator/): Author @keyframes visually, copy the CSS.
- [Easing editor](https://kamicrafts.com/open/tools/easing-editor/): Shape an animation easing curve by dragging handles and copy the timing-function CSS.
- [Scroll animation](https://kamicrafts.com/open/tools/scroll-animation/): Configure scroll-timeline animations, copy the CSS.
- [SVG generator](https://kamicrafts.com/open/tools/svg-generator/): Stack mesh gradients, blobs, waves, patterns, noise, and 10 more. Export as clean SVG, PNG, CSS, React, Tailwind or clip-path.

### Developers (14)
- [Find & replace](https://kamicrafts.com/open/tools/find-replace/): Search and replace with regex and case sensitivity options.
- [Text diff](https://kamicrafts.com/open/tools/text-diff/): Paste two versions to see every insertion, deletion, and change highlighted side by side.
- [Markdown editor](https://kamicrafts.com/open/tools/markdown-editor/): Live Markdown preview with HTML and MD export.
- [SVG generator](https://kamicrafts.com/open/tools/svg-generator/): Stack mesh gradients, blobs, waves, patterns, noise, and 10 more. Export as clean SVG, PNG, CSS, React, Tailwind or clip-path.
- [JSON formatter](https://kamicrafts.com/open/tools/json-formatter/): Paste JSON once to format it, catch syntax errors, and convert it to YAML or CSV.
- [Regex tester](https://kamicrafts.com/open/tools/regex-tester/): See matches and groups update as you type.
- [Base64 encode/decode](https://kamicrafts.com/open/tools/base64/): Encode text or files to Base64 strings and decode them back — all in the browser.
- [URL encoder](https://kamicrafts.com/open/tools/url-encoder/): Break a URL into its parts, percent-encode or decode it, and copy query params individually.
- [Hash generator](https://kamicrafts.com/open/tools/hash-generator/): Get a cryptographic hash of any text in MD5, SHA-1, SHA-256, or SHA-512.
- [JWT decoder](https://kamicrafts.com/open/tools/jwt-decoder/): Decode header, payload, and signature, color-coded.
- [UUID generator](https://kamicrafts.com/open/tools/uuid-generator/): Create UUID v4 and ULID identifiers, any count.
- [Timestamp converter](https://kamicrafts.com/open/tools/timestamp/): Translate epoch to date and back, any format.
- [Cron builder](https://kamicrafts.com/open/tools/cron-builder/): Pick fields, get a validated cron string + schedule.
- [Decision flow](https://kamicrafts.com/open/tools/flow/): Build yes/no decision trees with a shareable link.

### AEO & SEO (8)
- [Word frequency](https://kamicrafts.com/open/tools/word-frequency/): Frequency counts with a bar chart and CSV export.
- [Readability scorer](https://kamicrafts.com/open/tools/readability-scorer/): Three grade-level scores tell you if your writing is too dense to read.
- [Meta tag generator](https://kamicrafts.com/open/tools/meta-tag-generator/): Generate meta, OG and Twitter tags with live previews.
- [Schema generator](https://kamicrafts.com/open/tools/schema-generator/): Build Article, FAQ, Product and more as JSON-LD.
- [SEO content analyzer](https://kamicrafts.com/open/tools/seo-content-analyzer/): Keyword density, headings, and readability score.
- [AEO readiness scorer](https://kamicrafts.com/open/tools/aeo-readiness-scorer/): Score 12 structural signals for AI answer engines.
- [Passage audit](https://kamicrafts.com/open/tools/passage-audit/): Score each passage for AI retrievability.
- [UTM builder](https://kamicrafts.com/open/tools/utm-builder/): Tag URLs with UTM params, presets, and bulk mode.

### Product Marketers (14)
- [Headline analyzer](https://kamicrafts.com/open/tools/headline-analyzer/): Rate headlines on emotion, power words and clarity.
- [Readability scorer](https://kamicrafts.com/open/tools/readability-scorer/): Three grade-level scores tell you if your writing is too dense to read.
- [Release notes formatter](https://kamicrafts.com/open/tools/release-notes-formatter/): Group raw bullets into categorized notes with export.
- [OG image generator](https://kamicrafts.com/open/tools/og-image/): Compose an Open Graph image and download the PNG.
- [Decision flow](https://kamicrafts.com/open/tools/flow/): Build yes/no decision trees with a shareable link.
- [Meta tag generator](https://kamicrafts.com/open/tools/meta-tag-generator/): Generate meta, OG and Twitter tags with live previews.
- [SEO content analyzer](https://kamicrafts.com/open/tools/seo-content-analyzer/): Keyword density, headings, and readability score.
- [UTM builder](https://kamicrafts.com/open/tools/utm-builder/): Tag URLs with UTM params, presets, and bulk mode.
- [Comparison table](https://kamicrafts.com/open/tools/comparison-table/): Create comparison tables, export HTML, PNG or MD.
- [Positioning builder](https://kamicrafts.com/open/tools/positioning-builder/): Guided Dunford and Moore positioning statements.
- [RICE calculator](https://kamicrafts.com/open/tools/rice-calculator/): Score initiatives by reach, impact, confidence, effort.
- [A/B test calculator](https://kamicrafts.com/open/tools/ab-test-calculator/): Statistical significance and sample-size planning.
- [Feature-benefit mapper](https://kamicrafts.com/open/tools/feature-benefit-mapper/): Map each feature to the benefit it delivers.
- [Content brief builder](https://kamicrafts.com/open/tools/content-brief-builder/): Structured content briefs with intent and keywords.

### Product Managers (14)
- [Headline analyzer](https://kamicrafts.com/open/tools/headline-analyzer/): Rate headlines on emotion, power words and clarity.
- [Text diff](https://kamicrafts.com/open/tools/text-diff/): Paste two versions to see every insertion, deletion, and change highlighted side by side.
- [Markdown editor](https://kamicrafts.com/open/tools/markdown-editor/): Live Markdown preview with HTML and MD export.
- [Readability scorer](https://kamicrafts.com/open/tools/readability-scorer/): Three grade-level scores tell you if your writing is too dense to read.
- [Release notes formatter](https://kamicrafts.com/open/tools/release-notes-formatter/): Group raw bullets into categorized notes with export.
- [Screenshot beautifier](https://kamicrafts.com/open/tools/screenshot-beautifier/): Add background, padding, shadow, and frame, then export PNG.
- [JSON formatter](https://kamicrafts.com/open/tools/json-formatter/): Paste JSON once to format it, catch syntax errors, and convert it to YAML or CSV.
- [Decision flow](https://kamicrafts.com/open/tools/flow/): Build yes/no decision trees with a shareable link.
- [Comparison table](https://kamicrafts.com/open/tools/comparison-table/): Create comparison tables, export HTML, PNG or MD.
- [Positioning builder](https://kamicrafts.com/open/tools/positioning-builder/): Guided Dunford and Moore positioning statements.
- [RICE calculator](https://kamicrafts.com/open/tools/rice-calculator/): Score initiatives by reach, impact, confidence, effort.
- [A/B test calculator](https://kamicrafts.com/open/tools/ab-test-calculator/): Statistical significance and sample-size planning.
- [Feature-benefit mapper](https://kamicrafts.com/open/tools/feature-benefit-mapper/): Map each feature to the benefit it delivers.
- [Content brief builder](https://kamicrafts.com/open/tools/content-brief-builder/): Structured content briefs with intent and keywords.

### Everyone (18)
- [Text cleaner](https://kamicrafts.com/open/tools/text-cleaner/): Remove extra spaces, line breaks, and duplicate lines fast.
- [Clipboard manager](https://kamicrafts.com/open/tools/clipboard-manager/): Save, label, and search text clips in your browser.
- [Screenshot beautifier](https://kamicrafts.com/open/tools/screenshot-beautifier/): Add background, padding, shadow, and frame, then export PNG.
- [Decision flow](https://kamicrafts.com/open/tools/flow/): Build yes/no decision trees with a shareable link.
- [Invoice generator](https://kamicrafts.com/open/tools/invoice-generator/): Build a professional invoice and export the PDF.
- [Link-in-bio](https://kamicrafts.com/open/tools/link-in-bio/): Build a themed link-in-bio page with a share link.
- [QR code generator](https://kamicrafts.com/open/tools/qr-code/): Create custom-colored QR codes, download PNG.
- [Image converter](https://kamicrafts.com/open/tools/image-converter/): Drop one or many images to convert between PNG, JPEG, and WebP — no upload, no account.
- [Video converter](https://kamicrafts.com/open/tools/video-converter/): Convert a short video between MP4 and WebM in the browser — no upload required.
- [PDF merge](https://kamicrafts.com/open/tools/pdf-merge/): Merge and reorder PDFs entirely in the browser.
- [PDF compress](https://kamicrafts.com/open/tools/pdf-compress/): Reduce PDF size client-side with no upload — honest about what re-encoding can and cannot do.
- [PDF split](https://kamicrafts.com/open/tools/pdf-split/): Extract page ranges from a PDF in the browser.
- [Year progress](https://kamicrafts.com/open/tools/year-progress/): A progress bar for the year, with opinions.
- [Life in numbers](https://kamicrafts.com/open/tools/real-age/): Your age in heartbeats, days, weeks, and more.
- [Caffeine clock](https://kamicrafts.com/open/tools/caffeine/): Caffeine half-life countdown from your last cup.
- [Meeting cost meter](https://kamicrafts.com/open/tools/meeting-cost/): A live running cost for the people in the room.
- [How's outside?](https://kamicrafts.com/open/tools/outside/): Mood-phrased local weather, no API key, no signup.
- [Email signature](https://kamicrafts.com/open/tools/email-signature/): Build an HTML email signature with a share link.

## Toys

### Audio (3)
- [sonicc](https://kamicrafts.com/open/toys/sonicc/): A browser DAW with synth, drum machine, sampler, and WAV export.
- [plink](https://kamicrafts.com/open/toys/plink/): Every bounce is a note in your chosen scale.
- [synth pad](https://kamicrafts.com/open/toys/synth-pad/): Move your mouse across the pad to play a pentatonic scale. MIDI controllers work too.

### Visual (15)
- [kaleidoscopic](https://kamicrafts.com/open/toys/kaleidoscopic/): WebGL kaleidoscope, 8 symmetries, video capture.
- [aurora](https://kamicrafts.com/open/toys/aurora/): An interactive WebGL aurora you can ripple and record.
- [string art](https://kamicrafts.com/open/toys/string-art/): Cursor-driven geometric string patterns.
- [symmetron](https://kamicrafts.com/open/toys/symmetron/): A single seed reflected and rotated through quadrant mirrors, nine-tile kaleidoscopes, and rotational blooms — animated as seamless loops.
- [recreate](https://kamicrafts.com/open/toys/recreate/): Great artworks cut into semantic layers — wave crest, vortex, Fuji, cypress — each moves independently with your cursor.
- [starry night](https://kamicrafts.com/open/toys/starry-night/): The original oil painting split into multiplane layers — each swirl zone moves independently with your cursor.
- [the great wave](https://kamicrafts.com/open/toys/great-wave/): Hokusai's woodblock print in depth layers — wave crest, body, Fuji, and sky each move at their own depth.
- [girl with a pearl earring](https://kamicrafts.com/open/toys/pearl-earring/): Vermeer's luminous portrait split into depth layers — subject, background, and light each shift with your cursor.
- [the birth of venus](https://kamicrafts.com/open/toys/birth-of-venus/): Botticelli's Renaissance masterpiece in multiplane layers — Venus, wind gods, shore, and sea move at their own depth.
- [wanderer above the sea of fog](https://kamicrafts.com/open/toys/wanderer/): Friedrich's Romantic icon split into depth layers — wanderer, rocky outcrop, fog, and distant peaks each move independently.
- [the kiss](https://kamicrafts.com/open/toys/the-kiss/): Klimt's gilded masterpiece in depth layers — the entwined figures, gold leaf, and floral field each shift with your cursor.
- [a sunday on la grande jatte](https://kamicrafts.com/open/toys/sunday-seurat/): Seurat's monumental Pointillist scene split into depth layers — foreground figures, midground, river, and sky move independently.
- [impression, sunrise](https://kamicrafts.com/open/toys/impression-sunrise/): Monet's founding Impressionist work in depth layers — boats, reflections, mist, and the risen sun each move at their own depth.
- [view of toledo](https://kamicrafts.com/open/toys/view-of-toledo/): El Greco's brooding cityscape split into depth layers — Toledo's towers, storm clouds, and verdant hillside move independently.
- [the night watch](https://kamicrafts.com/open/toys/night-watch/): Rembrandt's civic masterpiece in depth layers — the militia company, light shafts, and shadowy background each move with your cursor.

### Simulation (3)
- [pendulum](https://kamicrafts.com/open/toys/pendulum/): One to eight linked arms under real gravity. Drag the bobs, release into chaos, hear the swing and watch the tip paint glowing trails.
- [gravity type](https://kamicrafts.com/open/toys/gravity-type/): Letters drop with physics and explode on click.
- [particle life](https://kamicrafts.com/open/toys/particle-life/): Set attraction rules between particle types and watch life-like patterns emerge.

### Generative (14)
- [perspect](https://kamicrafts.com/open/toys/perspect/): Type two words. A voxel structure appears that spells the first from the front and the second from the side.
- [aurea](https://kamicrafts.com/open/toys/aurea/): Parametric golden-ratio forms, 4K render, video.
- [treemap](https://kamicrafts.com/open/toys/treemap/): Each digit of π (or φ or e) divides the next rectangle. Grows organically like dividing cells — five color modes, palettes from any image.
- [forest](https://kamicrafts.com/open/toys/forest/): An L-system grows one tree per run of digits — every 9 blooms a flower and plants the next tree. A forest of π, growing live.
- [garden](https://kamicrafts.com/open/toys/garden/): Each digit gets a patch — the digit is how much grass grows, and crowded patches sprout sunflowers. Plots, spirals or a wild meadow, by day or night.
- [fold](https://kamicrafts.com/open/toys/fold/): Prime digits are sticky; the path curls to pack them together, live, energy ticking down — replica-exchange Monte Carlo in your browser. Bend it onto Planet π, or read the digits as frequency rings.
- [blossom](https://kamicrafts.com/open/toys/blossom/): Each digit says how many circles nest inside the next — a Sakura packing five levels deep, the deepest lit bright green. After Krzywinski’s Nature Biotechnology cover.
- [walk](https://kamicrafts.com/open/toys/walk/): Each digit turns the pen and it takes a step, tracing π’s wandering route — a flowing trail, a right-angle street grid, or a ten-spoke star.
- [chord](https://kamicrafts.com/open/toys/chord/): Ten digit-nodes on a ring; every time one digit follows another, a thread joins them, the busy transitions thickening into ribbons. A chord diagram of π.
- [tiles](https://kamicrafts.com/open/toys/tiles/): Each digit deals a Truchet tile; because the arcs meet at the edges, the tiles join into long curving paths and closed loops — a different labyrinth for every stretch of π.
- [bloom](https://kamicrafts.com/open/toys/bloom/): Real phyllotaxis: each seed one golden angle from the last, coloured by the next digit of π — Fibonacci spirals you can lock and unlock with the divergence angle.
- [automata](https://kamicrafts.com/open/toys/automata/): A cellular automaton drawn row by row down the canvas. π seeds the first row and can pick the rule too — rule 90 draws Sierpinski, rule 30 dissolves into noise.
- [wordart](https://kamicrafts.com/open/toys/wordart/): Type a phrase, pick an effect, export PNG or MP4.
  - Gallery with 24 text effects. Individual effect pages: `https://kamicrafts.com/embed/toys/wordart/{effect}/` (e.g. /embed/toys/wordart/aurora/, /embed/toys/wordart/glitch/, /embed/toys/wordart/halftone/)
- [pixart](https://kamicrafts.com/open/toys/pixart/): Drop an image, pick an effect, export PNG or MP4.
  - Gallery with 46 image effects. Individual effect pages: `https://kamicrafts.com/embed/toys/pixart/{effect}/` (e.g. /embed/toys/pixart/ascii/, /embed/toys/pixart/bloom/, /embed/toys/pixart/kaleidoscope/)

### Craft (1)
- [zen garden](https://kamicrafts.com/open/toys/zen-garden/): Ink-and-void CSS Zen Garden: zero images, zero JS.