Free Micro-Tools.
Run our deterministic validation rules directly in your browser. Single-file, instant, and 100% free with zero registration.
Photo Location Verifier
Extract GPS coordinates, capture timestamps, and verify geofence parameters from JPEG, TIFF, and HEIC files locally in the browser.
Free Online File Annotation & Markup Tool
Upload images, PDFs, code, text, video, or audio files to view and add interactive annotation markers inline locally in the browser.
Broken Link Checker
Crawl absolute outbound HTTP/HTTPS links concurrently. Identify 404, 500, or DNS resolve faults live in the browser.
Nofollow & Dofollow Checker
Scan anchor rel attributes on outbound links. Audit Google PageRank authority leaks and missing rel sponsored keywords.
WCAG Accessibility Checker
Scan HTML blocks, live pages, and content anchors for structural accessibility errors, missing alt image values, and heading layout skips.
PII Privacy Guard
Detect and prevent leakage of personal details (Credit Cards, SSNs, phone numbers, and emails) inside draft assets before distribution.
Barcode & QR Code Validator
Validate barcode and QR code payloads for symbology compliance, Modulo-10 checksum accuracy, GS1 Application Identifier structures, and URL reachability.
BIMI SVG & SVG Tiny-PS Validator
Audit SVG brand logos for BIMI inbox compliance. Verifies SVG Tiny-PS structure, security, dimensions, and provides 1-click auto-fixing.
Word Count Checker
Check copy lengths inside text, PDF, and Word documents. Set target limits and enforce minimum requirements.
Readability Score
Validate sentence syntax complexity. Track Flesch Reading Ease scores to match written copies with intended audiences.
Freelancer Cost Estimator
Calculate the true cost of hiring freelancers, comparing Upwork, Fiverr, and management overhead buffers.
Freelancer Invoice Generator
Create professional, branded PDF invoices in seconds with tax calculations and multi-currency formats.
Markdown File Validator
Validate Markdown and MDX documents for structural hierarchies, heading levels, image alt attributes, and link syntax rules.
CSV & Dataset Validator
Audit CSV and tabular datasets for schema compliance, duplicate primary keys, value type parity, and null value thresholds.
YAML Schema & Syntax Validator
Audit YAML files for syntax compliance, duplicate keys, unquoted Norway boolean keywords, and schema constraints.
GeoJSON Spatial Contract Linter
Audit GeoJSON files for self-intersecting geometries, winding order directions, coordinate snaps, antimeridian gaps, and bbox limits.
JSON & JSON Schema Validator
Audit JSON documents for syntax validation, duplicate keys, numeric precision loss, credentials exposure, and JSON Schema presets.
Mermaid Diagram Syntax & Semantic Validator
Lint Mermaid.js diagrams for syntax errors, circular dependencies, disconnected nodes, and accessibility issues. Scans .mermaid, .md, and .mdx files.
Excel (XLSX) Schema Validator
Audit Excel spreadsheets for schema compliance, sheet tab existence, column datatypes, cell formula errors, and primary key uniqueness.
.env File Validator & Secret Risk Scorer
Audit environment variable configurations for syntax issues, trailing whitespaces, duplicate keys, exposed secrets, variable interpolation, and example template sync drift.
TOML Schema & Syntax Validator
Audit TOML config files for syntax compliance, duplicate keys, key casing styles, Windows backslash escapes, unquoted boolean warnings, credentials leaks, and schema preset requirements.
i18n Locale File Validator & Comparison Workspace
Audit GNU Gettext PO, XLIFF, and Flutter ARB localization files. Detect missing keys, broken HTML tags, placeholder mismatches, formatting drift, and fuzzy translations side-by-side.