Minimo Digital

Free AI tools, file converters & developer utilities. Fast, private, no signup.

Minimo Digital is a free collection of 50+ browser-based tools for developers, designers, and businesses — spanning AI/LLM utilities, image and PDF conversion, developer tools, networking and security testers, an SEO suite, and audio conversion. Every tool works instantly with no account, no email, and no upload limits designed to push you toward a paid plan — most run entirely client-side, so your files never leave your device.

Popular Tools

Token & Cost Estimator AI

Estimate hidden tokens and costs across OpenAI, Claude, and Gemini.

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AI Model Comparison AI

Compare 22+ AI models side-by-side. Pricing, context, vision, reasoning.

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Prompt Optimizer AI

Score your prompts 1-10 and get specific improvements for better AI outputs.

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Hallucination Detector AI

Fact-check AI output against source material. Catch hallucinations before publishing.

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AI ROI Calculator AI

Is AI saving money? Factor in human review time and get real ROI.

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Markdown Shrinker AI

Convert HTML/CSS to clean Markdown. Save 70-90% tokens and reduce AI API costs.

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Image Converter

Convert PNG ↔ JPG, GIF, BMP with quality and resizing.

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Document Conversion

DOCX → PDF, PDF → DOCX, TXT → PDF, RTF → DOCX.

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Image Resizer

Resize images quickly. Keep format, control size and quality.

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PDF Utilities

Merge multiple PDFs into one, or split a page range.

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Background Remover

Remove backgrounds using thresholding or an uploaded mask.

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File Metadata Viewer

EXIF for images, codec info when available.

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Checksum Generator

Compute MD5 and SHA256 for uploads.

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Base64 Encode/Decode

Encode files or decode strings with image preview.

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JSON/YAML Converter

Convert and validate JSON ↔ YAML in your browser.

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Regex Tester

Run patterns with flags and view matches and groups.

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UUID/NanoID Generator

Generate cryptographically strong UUID v4 and NanoID.

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Timestamp Converter

Convert epoch seconds/ms to human-readable and back.

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URL Encoder/Decoder

Encode/decode URLs and parse query params.

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JWT Decoder

Decode header and payload of JWT tokens.

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CSV ↔ JSON Converter

Convert CSV to JSON and JSON to CSV.

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Text Diff Viewer

Compare two texts with line diff.

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iOS App Icon Resizer

Generate iOS icon PNGs from one source image.

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Android App Icon Resizer

Generate launcher and Play Store icon sizes.

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Audio MP3 ↔ WAV

Convert audio files between MP3 and WAV formats.

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SVG Tools

Optimize, sanitize, recolor, and convert SVG to PNG.

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Favicon & App Icons

Generate ICO, PNG sets, and PWA maskable icons.

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Color Palette & Contrast

WCAG ratio checker and image-based palette generator.

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HTTP Header Inspector

View response headers and cache hints for URLs.

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Redirect Checker

Follow redirect chains and find the final URL.

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SSL/TLS Checker

Certificate expiry, chain, and TLS support.

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DNS Tools

Lookups and basic propagation from public resolvers.

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CORS Tester

OPTIONS and GET tests with custom headers.

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Sitemap/Robots Builder

Generate sitemap.xml and robots.txt, then validate.

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OG/Twitter Card Generator

Create meta tags and preview social shares.

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Image Lazyload Helper

Markup + base64 placeholder generator.

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Critical CSS Extractor

Extract styles for visible content.

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SEO Suite

Technical SEO helpers: canonical, hreflang, robots, schema, links.

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Canonical Checker

Check canonical tag and http/https/www variants.

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Hreflang Generator

Generate alternate language link tags.

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Robots Meta Analyzer

Inspect meta robots directives for a page.

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Broken Link Finder

Scan internal links and sample status codes.

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Sitemap Split/Merge

Split large sitemap files or merge into an index.

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Structured Data Tester

Extract JSON-LD items from a page.

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URL Parameter Audit

Count and analyze query parameter usage.

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SERP Snippet Preview

Preview how your page appears in search results.

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Heading & Meta Audit

List headings and meta description from a page.

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Readability & Density

Flesch-Kincaid score and keyword density.

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Image Alt Audit

Find images missing alt attributes.

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Preconnect/Prefetch Builder

Build resource hint tags for external hosts.

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CLS Risk Finder

Detect images without width and height.

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Robots.txt Simulator

Simulate rules for a user-agent and path.

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Sitemap Pinger

Ping sitemap to Google and Bing.

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Local Business Schema

Generate Schema.org LocalBusiness JSON-LD.

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Multilingual Sitemap

Build sitemap with hreflang links.

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What's special

Minimo Digital is a suite of lightweight, reliable tools for AI workflows, file conversion, and developer productivity. No signups, no complexity—just results.

🤖 AI Tools Suite: Token & Cost Estimator, AI Model Comparison, Prompt Optimizer, Hallucination Detector, AI ROI Calculator, and Markdown Shrinker — all free, all private, all built for teams using ChatGPT, Claude, and Gemini.

📁 File & Image Tools: Image Converter, Document Conversion, Image Resizer, PDF Merge & Split, Audio MP3 ↔ WAV, and 30+ developer utilities (JSON, regex, JWT, SVG, SEO, networking).