Issue 001 ยท Ontario, Canada
A studio that ships tools,
not launch pages.
116 free, browser-based utilities for developers, creators, and game devs - from a background remover that never uploads your image to a physics editor that traces sprite collisions. Everything runs on your machine.
ยท no uploadsยท no signupยท no ads in-toolยท free forever
712 ยท Est. 2026
116
Tools shipped
10
Categories
0
Bytes uploaded
$0
Ever
Cover stories
What we're building on.
Updated 2026-09-05
01 / Media & Creators
Background Remover
Erase any image background in seconds with the ISNet AI model - 100% local, nothing uploaded, no signup, no watermark
Open โ
02 / Color & Design
Physics Editor
Free online sprite hitbox editor - auto-trace collision polygons and export for Phaser, Matter.js, Rapier or any 2D engine
Open โ
03 / Formatters & Validators
JSON Formatter
Pretty-print, minify, and validate JSON instantly
Open โ
04 / Calculators & Finance
AI Cost Comparator
Paste a prompt and compare per-call, per-day and per-month cost across 12 AI models
Open โ
Latest
Freshly shipped, in order of arrival.
Every tool on this site started as a small itch. We ship one when it's genuinely faster than the paid version - and never before.
The index
Every tool, by section.
116 entries
ยง01Text & String
9 tools
- 096Word CounterCount words, characters, sentences, paragraphs, reading timeโ
- 097Case ConverterConvert text to UPPERCASE, lowercase, camelCase, snake_case, kebab-case, and moreโ
- 099Text DiffCompare two texts and highlight the differencesโ
- 100Find & ReplaceBulk find and replace text with regex supportโ
- 086SlugifyTurn any text into a clean URL slug - Unicode-awareโ
- 088String EscapeEscape or unescape strings for JSON, JavaScript, and XMLโ
- 091Diff CheckerCompare two blocks of text with a line-by-line side-by-side diffโ
- 069Token CounterEstimate tokens and API cost for GPT-4o, Claude, Gemini, and Llamaโ
- 001Em Dash RemoverPaste AI text and instantly replace every em dash with a plain hyphenโ
ยง02Encoders & Decoders
5 tools
- 101Base64 Encoder / DecoderEncode text or files to Base64 and backโ
- 102URL Encoder / DecoderPercent-encode or decode URL components instantlyโ
- 103JWT DecoderDecode JSON Web Tokens and inspect claimsโ
- 104HTML EntitiesConvert special characters to HTML entities and backโ
- 093Image to Base64Convert any image to a Base64 data URI - for inline CSS or HTMLโ
ยง03Formatters & Validators
5 tools
- 105JSON FormatterPretty-print, minify, and validate JSON instantlyโ
- 106Regex TesterTest JavaScript regular expressions with live matchesโ
- 107SQL FormatterFormat SQL queries with proper indentation and keyword capitalizationโ
- 085JSON DiffStructural diff of two JSON documents - added, removed, changedโ
- 078User-Agent ParserParse any User-Agent string into browser, OS, device, and engineโ
ยง04Minifiers & Beautifiers
4 tools
ยง05Data Converters
15 tools
- 111JSON to CSVConvert JSON arrays to downloadable CSVโ
- 080Timestamp ConverterConvert between Unix time, ISO 8601, and human-readable datesโ
- 082Markdown to HTMLConvert Markdown to clean HTML with live previewโ
- 083YAML โ JSONConvert YAML to JSON and back with full syntax validationโ
- 084JSON โ TypeScriptGenerate TypeScript interfaces or types from a JSON sampleโ
- 087Base ConverterConvert between binary, octal, decimal, and hexadecimalโ
- 092CSV to JSONConvert CSV data to JSON - with auto-type coercionโ
- 094HTML to MarkdownConvert HTML back to clean Markdown with configurable styleโ
- 095PX to REMConvert between pixels and REM units for responsive CSSโ
- 070JSON SchemaInfer a JSON Schema (draft 2020-12) from a JSON sampleโ
- 071.env โ JSONConvert dotenv files to JSON and back - with secret maskingโ
- 072cURL ConverterPaste a curl command, get JavaScript fetch, axios, or Python requests codeโ
- 074Tailwind โ CSSConvert Tailwind utility classes to plain CSSโ
- 076TOML โ JSONConvert TOML config to JSON and back - handles tables and array-of-tablesโ
- 028SVG โ JSXPaste any SVG โ get a clean React component with prop-forwarding and camelCase attributesโ
ยง06Color & Design
8 tools
- 112Color ConverterConvert between HEX, RGB, HSL, and CMYK with live previewโ
- 113Palette GeneratorGenerate harmonious color palettes from a base colorโ
- 089CSS GradientDesign linear, radial, and conic CSS gradients with live previewโ
- 075Box ShadowDesign multi-layer CSS box-shadows with live previewโ
- 026Contrast CheckerCheck text/background contrast against WCAG 2.1 AA and AAA - live previewโ
- 027GlassmorphismDesign frosted-glass CSS cards with live preview and copy-ready codeโ
- 005Physics EditorFree online sprite hitbox editor - auto-trace collision polygons and export for Phaser, Matter.js, Rapier or any 2D engineโ
- 004Design StudioDesign t-shirts, stickers, posters and social posts in your browser - text, shapes, emoji stickers, image uploads, PNG export. No signup.โ
ยง07Hash & Crypto
1 tool
ยง08Generators
12 tools
- 098Lorem IpsumGenerate placeholder text - paragraphs, sentences, or wordsโ
- 115Cron GeneratorBuild and explain cron schedules visuallyโ
- 116Password GeneratorGenerate strong, random passwords with a strength meterโ
- 079UUID GeneratorGenerate one or thousands of UUIDs - v4 random or v7 time-orderedโ
- 081QR Code GeneratorCreate custom QR codes with colors and downloadable PNG/SVGโ
- 090Meta Tag GeneratorGenerate SEO, Open Graph, and Twitter Card meta tags with previewโ
- 073HTTP Status CodesSearch and browse every HTTP status code with common causesโ
- 077ASCII ArtTurn text into ASCII art banners for READMEs and CLIsโ
- 022Prompt EnhancerPaste a rough prompt - get a structured version with role, context, constraints, format, and examplesโ
- 023System Prompt GeneratorGenerate production-ready system prompts for custom GPTs, Claude Projects, agents, and Cursor rulesโ
- 031Mermaid EditorWrite Mermaid diagrams with live preview and export as SVG or PNGโ
- 032Emoji PickerSearch every emoji by name or keyword - one-click copy to clipboardโ
ยง09Media & Creators
18 tools
- 009Screen RecorderRecord your screen, tab, or window with audio - save as MP4 or WebM, no install, no watermarkโ
- 010Webcam RecorderRecord video from your webcam with mic audio - private, no uploadโ
- 011Voice RecorderRecord voice memos, podcasts, or narration - save as WebM audioโ
- 012Image CompressorCompress JPG, PNG, and WebP images with adjustable quality - private, in-browserโ
- 013Image ResizerResize images to exact pixel dimensions or percentages - with aspect-ratio lockโ
- 014Image ConverterConvert between PNG, JPG, and WebP in your browser - batch supportedโ
- 015YT ThumbnailDownload YouTube video thumbnails in every resolution - HD and Max-Resโ
- 016Text to SpeechConvert text to natural-sounding speech with 100+ voices - free, in-browserโ
- 017Speech to TextTranscribe your voice to text live - 40+ languages, free, in-browserโ
- 018Aspect RatioCalculate width, height, and ratio for video, image, and screen sizesโ
- 019Hashtag GeneratorTurn any topic into a curated hashtag set - mixed volume, ready to copyโ
- 020Fancy TextTurn plain text into 30+ Unicode font styles for bios, captions, and DMsโ
- 021Viral Sound Effects100+ trending 2026 TikTok, Reels & YouTube Shorts sound effects - cash register, vine boom, bruh, aughhh, and more - free MP3 + WAVโ
- 024Favicon GeneratorUpload an image โ get every favicon size, apple-touch, PWA icons, ICO, and the HTML snippetโ
- 025App Icon GeneratorOne 1024ร1024 image โ full iOS, Android, and PWA icon sets in a zipโ
- 030Placeholder ImageGenerate solid-color or gradient placeholder images at any size - download PNGโ
- 006Background RemoverErase any image background in seconds with the ISNet AI model - 100% local, nothing uploaded, no signup, no watermarkโ
- 003Blur BrushPaint blur or pixelation over any part of an image - for hiding faces, plates, IDs, or sensitive infoโ
ยง10Calculators & Finance
39 tools
- 033Percentage CalculatorWhat is X% of Y, X is what % of Y, percent increase, decrease, and changeโ
- 034Mortgage CalculatorEstimate your monthly mortgage payment, total interest, and full amortization scheduleโ
- 035Loan / EMI CalculatorCalculate monthly EMI, total interest, and total payable for any personal, auto, or student loanโ
- 036BMI CalculatorCalculate Body Mass Index from height and weight - metric (cm/kg) or imperial (ftยทin/lb)โ
- 037Age CalculatorCalculate exact age in years, months, and days from any date of birth to any dateโ
- 038Date CalculatorCalculate days between two dates, or add/subtract days, weeks, months, or years from any dateโ
- 039Tip CalculatorCalculate the tip, total, and per-person amount when splitting a restaurant billโ
- 040Discount CalculatorCalculate the sale price, amount saved, and final price with sales tax from a percent-off discountโ
- 041Compound Interest CalculatorCalculate future value with compounding interest, monthly contributions, and year-by-year growthโ
- 042Simple Interest CalculatorCalculate simple interest (I = P ร R ร T) for a loan or investment in years, months, or daysโ
- 043Salary CalculatorConvert hourly wage to annual salary and daily, weekly, and monthly gross payโ
- 044Time Duration CalculatorCalculate hours worked between a start and end time, minus break minutesโ
- 045Unit ConverterConvert between metric and imperial units - length, weight, temperature, volume, area, speed, and timeโ
- 046GPA CalculatorCalculate GPA on the standard US 4.0 scale from letter grades and credit hoursโ
- 047Grade CalculatorCalculate your current weighted class grade and what score you need on the final examโ
- 048Calorie Calculator (BMR/TDEE)Calculate BMR, TDEE, and daily calorie targets for weight maintenance, loss, or gainโ
- 049Body Fat CalculatorEstimate body fat percentage from neck, waist, and hip circumference using the US Navy formulaโ
- 050Pace CalculatorCalculate running pace, finish time, or distance for 5K, 10K, half marathon, or marathonโ
- 051Pregnancy Due Date CalculatorEstimate your due date from LMP, conception date, or ultrasound scan (Naegele's rule)โ
- 052Scientific CalculatorType any expression: +, โ, ร, รท, ^, %, sin, cos, tan, log, ln, sqrt, exp, n!, ฯ, eโ
- 053Sales Tax / VAT / GST CalculatorCalculate sales tax, VAT, or GST - add tax to a net amount or reverse it out of a gross amountโ
- 054Investment CalculatorProject future value of an investment with monthly contributions, CAGR, ROI, and real (inflation-adjusted) balanceโ
- 055Retirement CalculatorEstimate your retirement nest egg and the sustainable monthly income it can provideโ
- 056ROI CalculatorCalculate return on investment, net profit, and annualized ROI (CAGR) from any investmentโ
- 057Markup & Margin CalculatorCalculate selling price, profit, gross margin, and markup - three input modesโ
- 058Break-Even CalculatorFind the units and revenue needed to cover fixed costs and hit a target profitโ
- 059Net Worth CalculatorTrack total assets and total liabilities to see your personal net worth balance sheetโ
- 060Car Loan CalculatorEstimate your monthly auto-loan payment including sales tax, down payment, and trade-in valueโ
- 061Fraction CalculatorAdd, subtract, multiply, or divide fractions - result shown simplified, as mixed number, and decimalโ
- 062Ratio CalculatorSimplify a ratio, solve A:B = C:D for a missing value, or scale a ratio by any factorโ
- 063Random Number GeneratorGenerate one or many random integers in any range - with unique and sort optionsโ
- 064Dice RollerRoll polyhedral dice with quick presets or standard dice notation (2d6, 3d20+5, etc.)โ
- 065Statistics CalculatorPaste any data set to see mean, median, mode, range, variance, and standard deviation instantlyโ
- 066Binary/Hex CalculatorDo arithmetic and bitwise operations in binary, octal, decimal, or hex - see the result in all fourโ
- 067Quadratic SolverSolve any quadratic axยฒ + bx + c = 0 - real or complex roots, discriminant, and vertexโ
- 068Prime FactorizationTest if a number is prime and get its full prime factorization plus divisor listโ
- 007True Hourly RateSee the real hourly rate you earn after taxes, health, tools, retirement and unpaid adminโ
- 008AI Cost ComparatorPaste a prompt and compare per-call, per-day and per-month cost across 12 AI modelsโ
- 0022027 CalendarA full 2027 calendar with events, notes, and browser reminders - all stored locallyโ
Colophon
Built in Ontario by Shan. Set in Instrument Serif and Plus Jakarta Sans. Every tool runs entirely in your browser - no telemetry, no accounts, no rented GPUs, no venture capital. Just tools.