A collection of free, open-source utilities for developers and SEOs. Everything runs client-side in your browser—no data is ever uploaded.
Buy me a coffeeCrop, resize, and convert images instantly in your browser. No server uploads required.
Remove image backgrounds with chroma-key colour picking, entirely in your browser.
Generate beautiful color schemes and extract palettes from your images.
Apply stunning duotone effects to your photos for a professional, branded look.
Apply retro Floyd-Steinberg dithering effects to images for unique web aesthetics.
Professional grade cropping with custom aspect ratios and precision controls.
Convert PNG and JPG images to optimized WebP format for faster web performance.
Generate consistent favicons from text, emojis, or an uploaded image, in every standard size.
Client-side minifier to strip unnecessary SVG code.
Generate social-ready images of your code snippets.
Quickly generate correct canonical tags with self-referencing and cross-domain options.
Build and stylise "useful links" boxes for the bottom of blog posts to improve engagement.
Create multi-regional and multi-lingual tags for international SEO deployments.
Map old URLs to new ones and generate Apache, Nginx, or WordPress redirect rules instantly.
Advanced search query builder to find indexing issues, PDF files, and exposed data.
Combine multiple lists of keywords to generate exhaustive lists of variations and match types.
Preview and optimize how your website appears in Google search results (Desktop & Mobile).
Bulk check status codes, headers, and meta tags for multiple URLs.
Quickly create stylised FAQ accordions with integrated JSON-LD Schema. Perfect for WordPress.
Automatically weave internal links into your content from a keyword-to-URL list.
Real-time text analysis for SEO meta data and content length requirements.
Generate code for a "Summarize this" button to add AI capability to your blog.
Find page 2-3 keywords worth pushing to page 1, forecast the uplift, and catch cannibalization.
Cross-reference GSC keywords with a Screaming Frog crawl to find weak internal link anchor text.
Find pages and keywords losing search clicks period-over-period, triaged by severity.
Build your own site-specific CTR curve from GSC data, adjusted for AI Overviews, and flag underperforming titles.
Structure and build optimized Google Ads campaigns, ad groups, and keyword sets.
Model break-even ROAS and net profit based on budgets, conversion rates, and margins.
Determine if your A/B test results are statistically valid and reliable for decision making.
Strip, de-duplicate, or randomly sample HTML links in bulk while preserving text content.
Clean up messy Word/Google Docs formatting and hidden metadata for safe web-ready pasting.
A free GitHub Pages portfolio builder — no coding required, SEO fields built in.
A simple, open-source live HTML editor running entirely client-side.
Preview how your In-App Events metadata and images appear on the App Store.
Visualize JSON-LD structure and dependencies.
Quick-check meta directives and conflict detection.
Offline token decoder and expiry checker.
Decode certificate chains and view raw data.
Efficiently browse massive log files without crashing.
Sanitize SQL dumps for safe sharing.
Convert CSV to JSON or SQL streams.
Create and preview social meta tags.
Visual interface for complex cron schedules.
Layered box-shadow generator and previewer.
Local-only PDF manipulation tools.
Extract text from images using local Tesseract.js.
Compare and highlight differences in JSON.