V1.1
Release Notes
Track what's new, improved, and fixed in FastInvoice.dev
Calculator UX Overhaul & US Tax Hub
Highlights
Live auto-calculation across all calculators โ results update as you typeNew US Tax Hub at /us-taxes with four free toolsHero result numbers with effective rates and key metricsFixed tax bracket rate display bug in Albania salary calculatorMonthly net salary and 4%-rule monthly withdrawal estimate addedAnimated pill toggle switches replace plain checkboxesAll 5 US tax components fully redesigned with two-column layoutFull design-token CSS โ no hardcoded colors, dark-mode compatible
Calculator UX
- Live debounced calculation (300ms) on all calculators โ no submit button needed.
- Hero number styling for primary results: net salary, monthly loan payment, projected 401k balance.
- Effective deduction rate badge added to Albania salary calculator result panel.
- Monthly net salary line added under the annual hero value.
- Estimated monthly withdrawal (4% rule) added to retirement calculator results.
- $USD prefix added to retirement projected balance hero.
- Descriptive empty state with icon added to all calculator result panels.
- Plain checkbox toggles replaced with animated pill switches in salary calculators.
- Smooth mobile scroll-to-results after each calculation.
- Retirement calculator auto-calculates on page load with sensible defaults.
- Loan amount adjuster repositioned below input field in horizontal layout.
Bug Fixes
- Fixed tax bracket rates showing 0% โ decimal rates now multiplied by 100 before display.
- Fixed retirement calculator scrolling to results on page load (now only scrolls on user interaction).
- Fixed net-to-gross mode showing only gross salary โ now shows full deduction breakdown.
- Fixed Japan salary result clearing on every keypress of insurance rate fields.
- Fixed loan result heading duplicating the monthly payment label โ now reads โLoan Summaryโ.
- Standardised retirement result rows from 1.2-2 to 1.0-0 format (no cents on large amounts).
US Tax Hub
- Launched /us-taxes hub page with icon cards for all four US tax tools.
- Redesigned Filing Threshold Checker: two-column layout, filing required/not required badge, colour-coded difference row.
- Redesigned SE Tax Estimator: hero quarterly payment number with net income, SE tax, and deductible half breakdown.
- Redesigned Physical Presence Calendar: interval cards with inside/outside US badges and FEIE eligibility badge.
- Redesigned FBAR & FATCA Tracker: dual threshold status cards (FBAR $10k / FATCA $50k) and account list.
- All tax component CSS migrated fully to design tokens โ dark-mode compatible with no hardcoded colors.
- Tax route renamed from /taxes to /us-taxes across routes, nav links, and internal tool cards.
Salary Calculators Hub Page Launch
Highlights
New dedicated hub page for all salary calculatorsCentralized discovery page for US, Japan, and future salary toolsEducational content: how-to guide, FAQs, and benefits overviewInternal linking strategy to improve user flow between calculators
Hub Page
- Created `/salary-calculators` route as a central discovery page for all country-specific salary calculators.
- Designed responsive grid layout showcasing each calculator with title, description, key features, and direct link.
- Added "Why Use a Salary Calculator?" section explaining benefits and real-world use cases.
- Included 4-step how-to guide for using the calculators effectively.
SEO & Discoverability
- Added comprehensive SEO meta tags: title, description, and 8 targeted keywords.
- Included 4-item FAQ section covering accuracy, tax planning, privacy, and update frequency.
- Added structured HTML markup for easy parsing by search engines.
- Registered route in prerender build and sitemap.xml with priority 0.8.
Navigation & Linking
- Hub page acts as central entry point for salary calculator feature.
- Linked from individual calculator components for easy cross-promotion.
- Improves user flow between US and Japan salary calculators and future additions.
Loan Calculator & Japan Salary Calculator SEO Improvements
Highlights
Expanded English loan calculator keywords to 12 targeted terms including amortization and mortgageFully replaced mixed-language German copy โ removed all "Payment Calculator" English phrasesStrengthened German SEO with 12 native keywords covering Kreditrechner, Tilgungsplan, and BaufinanzierungImproved Japan salary calculator meta title, description, and keywords (English + Japanese)Added full SEO content section to Japan calculator: how-it-works, tips, and 4-item FAQ
SEO โ English
- Updated loan calculator page title to "Free Loan Calculator โ Monthly Payment & Amortization".
- Expanded loan meta keywords from 7 to 12 terms, adding free, mortgage, personal loan, loan payoff, and online loan calculator.
- Rewrote loan meta description to cover personal loans, car loans, mortgages, and fixed-rate borrowing.
- Improved loan content section title, intro paragraph, and three planning tips with actionable specifics.
- Updated loan FAQ answers to include amortization terminology and rate-shopping guidance.
SEO โ German
- Removed all English "Payment Calculator" phrases from subtitle, noChartData, and contentIntro.
- Expanded German keywords from 6 to 12, adding kostenloser kreditrechner, tilgungsplan berechnen, autokredit rechner, privatkredit rechner, baufinanzierungsrechner, and online kreditrechner.
- Rewrote meta title to "Kostenloser Kreditrechner โ Monatsrate, Zinsen & Tilgungsplan".
- Updated meta description to mention Privatkredite, Autokredite, and Baufinanzierung.
- Rewrote content intro, planning tips, and FAQ answers in fully native German.
SEO โ Japan Salary Calculator
- Updated meta title to "Japan Salary Calculator โ Take-Home Pay, Income Tax & Social Insurance | FastInvoice.dev".
- Rewrote meta description to highlight 2026 tax rules, net-to-gross mode, and optional insurance fields.
- Expanded keywords from 10 to 18 terms, adding gross to net, net salary, pension calculator, 2026 tax calculator, ็ตฆไธๆ็ดฐใทใใฅใฌใผใทใงใณ, and ไฝๆฐ็จ ่จ็ฎ.
- Replaced single-paragraph SEO section with a full how-it-works explanation, four planning tips, and a four-question FAQ.
- Added faq-list and faq-item styles alongside h3/ul styles to the component stylesheet.
Lifecycle, Reminder, and Funnel Analytics Upgrade
Highlights
Added overdue reminder automation in the creator workflowIntroduced funnel analytics events for key invoice actionsAdded sync-ready local/cloud mode foundation and snapshot export
Workflow
- Added overdue check panel with one-click copy of reminder messages for all overdue documents.
- Enabled status-driven follow-up flow with stronger client lifecycle handling.
401K SEO Guide and Retirement Flow Update
Highlights
Published a dedicated 401K educational SEO pageAdded direct article-to-calculator navigationExpanded prerender and sitemap coverage for retirement content
SEO Content
- Created a new 401K long-form guide page with structured data for better search understanding.
- Added focused retirement-planning copy around contributions, employer match, and compound growth.
Navigation
- Linked the new guide directly to the existing 401K calculator to improve user flow.
- Registered the guide route in app routing for direct access and sharing.
Indexing
- Included the new guide in prerender routes for static output during production builds.
- Added the public URL to sitemap.xml for crawler discovery and index freshness.
Backup, Templates & Premium Polish
Highlights
Backup & RestoreJSON TemplatesProduct Export/ImportLive Invoice PreviewStep IndicatorSuccess AnimationFeature CardsTooltips
Backup & Restore
- Export all invoices and products as a single JSON backup file
- Import backups on any device and skip duplicates automatically
- Separate export/import for product library only
- Download pre-filled JSON templates to get started faster
- Invoice template includes sample data with all supported fields
- Product template includes 3 example products ready to customize
- Helpful tooltips on every backup button explaining what it does
Invoice Creator Enhancements
- Live invoice preview panel updates as you type and shows logo, shop, customer, items, and total
- 5-step progress indicator with click navigation
- Animated success overlay with SVG checkmark on PDF download or print
- Glassmorphism effect on quick total sidebar card with frosted blur
- SVG empty-state illustrations for stored invoices and saved products
- Additional Notes and Manage Library placed side-by-side in a 50/50 layout
Landing Page
- Animated gradient text on the hero title with smooth color shift
- Staggered fade-in animations on hero elements
- Feature cards grid replacing the old bullet list with 9 cards and icons
- New cards for Backup & Restore, Templates, and Live Preview features
Translations
- All backup/import/export labels translated in English, Albanian, German, and Dutch
- Template download messages and tooltip texts in all 4 languages
V1 Launch - UI & Better Experience
Highlights
Completely new visual designLight color paletteRounded buttons and inputsBetter organized sectionsRelease Notes page
New Design System
- New soft violet primary color with coral pink and sky blue accents
- Light background palette replacing the old teal/dark scheme
- All buttons are now pill-shaped with smooth hover effects and soft shadows
- Form inputs have rounded corners with violet focus rings
- Cards feature subtle borders with hover elevation effects
Navigation & Layout
- Redesigned toolbar with icon-based navigation pills
- Brand identity with lightning bolt icon and purple accent
- Clean white toolbar with subtle bottom border instead of a solid color block
- Improved mobile sidenav with icon labels and grouped navigation
- Footer redesigned with brand element and better link layout
Invoice Creator
- Section cards with colored left accent bars for better visual hierarchy
- Product table with uppercase headers and hover row highlighting
- Totals card with gradient lavender background
- Grand total row highlighted with violet accent
- Quick total sidebar card with purple gradient instead of teal
- Stored invoice list items with hover border color transition
- Mobile product cards with improved spacing and amount highlight
Calculators
- Loan calculator has cleaner panel layout with hover effects on result rows
- Salary calculator has toggle switches styled as bordered pill containers
- Both calculators use focus rings matching the violet theme
- Calculate buttons are now pill-shaped with stronger shadow depth
- Result highlighting uses soft violet tints instead of teal/green
Landing Page
- Hero section with decorative gradient orbs and refreshed color scheme
- Checklist items with circular violet checkmark badges
- Content list items are now bordered cards with hover highlight
- Ordered lists use numbered violet circles instead of plain numbers
- SEO sidebar links have slide-right hover animation
- FAQ section follows the new card-based visual language