Convert images to C/C++ byte arrays for Arduino, ESP32, SSD1306 OLED - Live at https://pixel.hjlabs.in
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Apr 11, 2026 - JavaScript
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Schema.org JSON-LD generators - FAQ, Article, Product, LocalBusiness, Breadcrumb, Organization - Live at https://schema.hjlabs.in
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Jun 13, 2026 - JavaScript
Unix epoch ↔ date converter, visual cron expression generator, timezone converter - free, no signup - Live at https://time.hjlabs.in
crontab unix-timestamp developer-tools cloudflare-workers epoch-converter timezone-converter cron-generator hjlabs
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Jun 13, 2026 - JavaScript
Free IPv4 subnet calculator, aspect ratio calculator, WCAG color contrast checker - 100% client-side - Live at https://calc.hjlabs.in
wcag developer-tools color-contrast subnet-calculator aspect-ratio-calculator cloudflare-workers cidr-calculator hjlabs
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Jun 13, 2026 - JavaScript
India DPDPA 2023 + GDPR compliant privacy policy generator - Live at https://compliance.hjlabs.in
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Apr 11, 2026 - JavaScript
llms.txt generator, AI crawler robots.txt builder (GPTBot/ClaudeBot/CCBot), GPT/Claude token counter - Live at https://aitools.hjlabs.in
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Jun 13, 2026 - JavaScript
15 free developer tools: JSON, CSV, Base64, JWT, hash and more - Live at https://fmt.hjlabs.in
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Apr 11, 2026 - JavaScript
XML sitemap generator, robots.txt builder, meta description generator with live SERP preview - Live at https://seo.hjlabs.in
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Jun 13, 2026 - JavaScript
.gitignore (550+ templates), multi-stage Dockerfile, .htaccess rules generators - all client-side - Live at https://devtools.hjlabs.in
developer-tools config-generator gitignore-generator dockerfile-generator cloudflare-workers hjlabs htaccess-generator
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Jun 13, 2026 - JavaScript
Favicon, Open Graph & social preview image generator - Live at https://og.hjlabs.in
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Apr 11, 2026 - JavaScript
AI-powered image enhancement & marketing image generator with BYOK Gemini - Live at https://enhance.hjlabs.in
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Apr 11, 2026 - JavaScript
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