TOOL BOX CO.
50+ Privacy-First Micro-SaaS tools for students, creators & developers.
HEIC to JPG
Convert iPhone photos to universal JPG instantly.
PopularImage Compressor
Compress JPG/PNG/WebP fully offline.
PopularSocial Image Resizer
Crop arrays for X, IG, and YouTube perfectly.
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QR Code Generator
Create customized QR codes instantly.
PopularJSON Formatter
Format and validate JSON seamlessly.
PopularJWT Decoder
Decode JSON Web Tokens 100% client-side.
PopularJSON to CSV
Instantly convert JSON arrays to CSV.
PopularSecure Password Gen
Create crypto-secure passwords instantly.
PopularXML Formatter
Pretty print and minify XML structures.
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Exif Data Remover
Strip GPS and camera metadata from photos.
PopularWhat is my IP?
Check your public IP and browser fingerprint.
PopularContrast / A11y Checker
WCAG contrast checker for designers.
PopularYAML to JSON
Convert YAML configs to JSON arrays.
PopularJSON to TypeScript
Generate TS interfaces from JSON objects.
PopularLog Prettifier
Format and filter messy terminal logs.
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SVG Wave Generator
Create smooth SVG waves for section dividers.
PopularSocial Media Limits
Count characters for X, IG, LinkedIn, etc.
Bulk UUID Generator
Generate up to 50k UUIDs in milliseconds.
Bcrypt Hash Generator
Hash & verify passwords directly in browser.
CSS Shadow Generator
Visually create perfect CSS box shadows.
Cron Job Generator
Build complex cron schedules visually.
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Base64 Encoder
Encode or decode Base64 strings fast.
URL Encoder
Encode or decode URLs instantly.
Color Picker
Pick colors & get HEX, RGB, HSL.
Regex Tester
Test regular expressions in real-time.
HTML Entity
Escape HTML entities securely.
UTM Campaign Builder
Generate clean tracking links for ads.
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Case Converter
Change text to UPPERCASE, Title Case, etc.
Word Counter
Count words, characters, and reading time.
Lorem Ipsum
Generate corporate or developer placeholder text.
Duplicate Line Remover
Clean up lists by removing duplicates.
Markdown Previewer
Live rendering of Markdown syntax.
PopularMarkdown to PDF
Convert .md files to shareable PDF files.
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Freelance Rate Calculator
Find your true minimum hourly rate.
Tip Splitter
Calculate tips and divide the bill easily.
Date Difference
Find the exact difference between two dates.
Percentage Calculator
Find percent change and fractions.
Hashtag Mixer
Randomize tags to avoid shadowbans.
PopularUniversal PDF Converter
Convert txt, json, code, or images into a PDF.
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Loan Amortization Simulator
Simulate compounded loan schedules and visual SVG payments.
PopularStock Options Pricing (Black-Scholes)
Calculate option fair values and 5 Greeks locally.
Cap Table Equity Dilution
Simulate venture funding rounds and equity dilution.
PopularNDA Contract Clause Auditor
Heuristic scan of legal agreements for liabilities.
GDPR & CCPA Privacy Auditor
Audit cookie compliance and generate privacy markdown policies.
Trademark & Copyright Compiler
Generate comment-based MIT, Apache, and closed source disclaimers.
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CSV to SQL Schema DDL Converter
Auto-detect CSV data types and build tables & insert scripts.
PopularJSON Schema to OpenAPI Spec
Turn nested JSON objects into OpenAPI v3 YAML or JSON specs.
Statistical Hypothesis Solver
Perform offline T-tests/Z-tests with glowing rejection bell curves.
PopularDimensional Weight Shipping Cost
Evaluate box volumes and carrier weight divisors offline.
PopularProduct Profit Margin Modeler
Model unit economics, Stripe fees, and CPC/CAC sensitivities.
Amazon & eBay Listing SEO Auditor
Scan copy for promotional words, strip description HTML.
PopularRental Yield & Cash-on-Cash Calculator
Determine property yields, Cap Rates, and debt service DSCR.
Lease Cost Escalation Modeler
Model compound rent escalations and inflation indexed CPI ladders.
PopularSynthetic Tabular Data Generator
Generate infinite synthetic healthcare, finance, or clickstream records with differential privacy.
PopularAcademic Data Anonymizer & Auditor
Anonymize sensitive datasets to 100% PIPEDA & GDPR compliance offline in browser RAM.
Hybrid Dataset Fuser & Extrapolator
Extract pattern covariances from real baselines and scale datasets 10x-100x.
The Paradigm Shift: Privacy-First, Zero-Server Web Utilities
For over two decades, using a web utility—whether converting an image, formatting JSON, testing a regular expression, or generating a strong password—required sending your data over the internet to a remote server. This legacy approach, although once necessary due to limited browser computing capabilities, poses significant, modern-day security risks and data privacy concerns.
Every file upload, text paste, or code snippet sent to a remote backend leaves digital footprints, logs, and potential storage points. ToolBox Co. represents a total paradigm shift. By leveraging cutting-edge browser technologies, we run 100% of our utility calculations locally inside your browser's execution engine. Your data travels exactly zero miles.
How Client-Side Computing Works
When you load a tool like our HEIC to JPG Converter or Image Compressor, your browser downloads the compilation script and executes it locally using WebAssembly (WASM) and sandboxed Web Workers. The raw files you supply do not trigger network requests; instead, they are held temporarily as local RAM buffer points (Blobs) and processed instantly by your computer's CPU.
Once processing completes, the browser exports the results directly back to your file system. If you disconnect your internet connection entirely, the tools will continue to work perfectly.
Our Three Pillars of Safety
- No Account Required: We do not require registration, removing the risk of credential leaks or user profile tracking entirely.
- Stateless Architecture: We have no database or storage backend for your inputs. There are no temporary folders, caching disks, or records kept.
- Fully Auditable: Press
F12or open your browser's Developer Tools network tab. You will observe that zero packets are sent when converting or compressing data.
An In-Depth Look at Tool Categories
Our platform provides over 50 Micro-SaaS tools carefully categorized into logical directories to optimize your everyday developer, design, and analysis workflows:
Developer & Security Utilities
Pretty print and validate structured data using our JSON Formatter or XML Formatter. Test complicated logical strings using the Regex Tester, generate millions of safe IDs with the UUID Generator, or hash/validate passwords directly in your client console using our cryptographically secure Bcrypt Hasher.
Media & Image Compression
Images represent over 60% of modern web traffic weight. Compress JPG/PNG assets offline using our Image Compressor, convert proprietary iPhone photos to open structures with the HEIC to JPG Converter, or remove sensitive EXIF data (camera models, GPS coordinates) with the EXIF Data Remover before publishing.
Text, Documents & PDF Publishing
Convert markdown files to beautiful documentation reports using our Markdown to PDF, eliminate duplicate rows from messy server logs using the Duplicate Line Cleaner, or quickly convert API responses using the JSON to CSV converter.
Frequently Asked Questions
How can ToolBox Co. be completely free?
Our client-side architecture keeps our server hosting overheads incredibly low. Instead of running expensive, high-capacity CPU/GPU servers to process massive user files, your own computer does the heavy lifting. This allows us to offer professional tools completely free, supported only by minimal advertising integrations.
Are my converted files permanently safe?
Yes. Because your files never reach our servers, there are zero remote directories where your files can be leaked, intercepted, or stolen. Once you close your browser tab, all temporary memory pointers (Blobs) allocated for processing are automatically flushed by your browser's garbage collector.
What is the Model Context Protocol (MCP) server?
The MCP is an open-standard protocol by Anthropic. We provide a built-in MCP server so AI assistants (like Claude, ChatGPT, or custom LLM agents) can programmatically invoke our formatting, hashing, and encoding libraries directly inside their local workspace.
Is GDPR and CCPA compliance supported?
Absolutely. Because we do not store, compile, or process personal identifying information on external databases, GDPR and CCPA policies are supported by design. We hold no consumer data records, and all cookie preferences can be managed directly through browser settings.