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Full source code for the HTML, CSS and JavaScript Playground: a three-pane HTML, CSS and JavaScript playground with a sandboxed live preview, console capture, share links and zip download, all in the browser. Instant download after purchase.
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Full source code for the Code Minifier and Beautifier: an HTML, CSS and JavaScript minifier and beautifier that lazy-loads Terser and Prettier only when needed. Instant download after purchase.
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Full source code for the Certificate Maker: a landscape certificate generator with three templates and bulk creation from CSV, as one multi-page PDF or a zip of per-person PDFs. Instant download after purchase.
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Full source code for the Business Card Maker: a card designer with a live SVG preview that exports print PDFs with 3 mm bleed and crop marks, or 8-up and 10-up A4 sheets with a mirrored back page. Instant download after purchase.
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Full source code for the BMI and Calorie Calculator: a BMI, BMR (Mifflin-St Jeor), TDEE and macro calculator with metric and imperial units and a health disclaimer. Instant download after purchase.
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Full source code for the Barcode Generator: a barcode maker for EAN-13, EAN-8, UPC-A, Code 128, Code 39 and ITF with check-digit handling, SVG/PNG download and batch sheets, built on JsBarcode. Instant download after purchase.
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Full source code for the Background Remover: removes image backgrounds in the browser with the Apache-2.0 MODNet model via transformers.js, plus an offline solid-colour flood-fill method. Instant download after purchase.
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Full source code for the Aspect Ratio Calculator: an aspect ratio calculator with simplification, linked resizing, nearest common ratio detection, a ratio catalogue and CSS output. Instant download after purchase.
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Full source code for the App Icon Generator: turns one image into an iOS AppIcon set with Contents.json, Android mipmaps with adaptive icon XML, and PWA icons with a manifest snippet, zipped in the browser. Instant download after purchase.
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Full source code for the API Request Tester: a small online API client that sends requests from the server with SSRF protection and shows status, timing, headers and a pretty body. Instant download after purchase.
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Full source code for the Age and Date Difference Calculator: an age, date difference and add/subtract date calculator with business-day counting and a holiday list, computed in UTC to avoid daylight-saving drift. Instant download after purchase.
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Full source code for the Word and Character Counter: a text analyser that counts words, characters, sentences and reading time, ranks keyword density and checks text against common length limits. Instant download after purchase.
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Full source code for the Website Cost Calculator: a website estimator that maps site type, page count, design level, CMS, content and features to hours, a timeline and a priced breakdown. Instant download after purchase.
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Full source code for the Website Speed and SEO Audit Checker: a Next.js API route and UI that fetch a public page through an SSRF-safe client and score speed, size, titles, headings, canonical, robots, sitemap and security headers. Instant download after purchase.
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Full source code for the UUID and Random String Generator: UUID v4 and v7 generation in bulk, formatting options, random strings from custom character sets and a UUID parser. Instant download after purchase.
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Full source code for the Unit and Time Zone Converter: a unit converter plus a time zone planner, using the browser Intl API to compare offsets, daylight saving and overlapping working hours. Instant download after purchase.
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Full source code for the Terms and Conditions Generator: a terms builder that composes clauses for a site, app, SaaS or store from questionnaire answers and exports HTML or Markdown. Instant download after purchase.
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Full source code for the SQL Formatter: a SQL beautifier around the open-source sql-formatter library with dialect, keyword case and indent options, plus a string-aware minifier. Instant download after purchase.
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Full source code for the Schema Markup (JSON-LD) Generator: a JSON-LD generator for organization, local business, product, FAQ, article and breadcrumb schemas with a checker that flags missing properties. Instant download after purchase.
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Full source code for the Salary Slip Generator: a payslip form with earnings, deductions, employer contributions and net pay in words, exported as a PDF with optional fields. Instant download after purchase.
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Full source code for the SaaS Pricing and MRR Calculator: a subscription-business model: plans, customers, churn and growth projected over 12 months with MRR, ARR, LTV and CAC payback and an SVG chart. Instant download after purchase.
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Full source code for the SaaS Landing Page Templates: three static SaaS landing pages (light, dark and minimal) in HTML and Tailwind CSS with hero, features, pricing and FAQ sections. Instant download after purchase.
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Full source code for the Robots.txt and Sitemap Generator: builds robots.txt from rule groups and presets, lints it for common mistakes, and turns a pasted URL list into a valid sitemap.xml. Instant download after purchase.
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Full source code for the Resume and CV Builder: a resume editor with reorderable sections, three templates, a live preview and a PDF writer, kept in local storage. Instant download after purchase.
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