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Publishing tools and guides

Create, inspect, and troubleshoot pages, domains, calendars, and share assets.

Tools

Domain name finderCombine every word position, optional prefix and suffix, then check selected domain endings with the registry itself.
PageSpeed Insights and Lighthouse report analyzerTurn Lighthouse JSON into a version-aware action queue while keeping lab scores, field metrics and HTML evidence separate.
Favicon generatorTurn one image or SVG into a complete local favicon package, with real-size previews before you download the ZIP.
YouTube thumbnail downloaderPaste a video link, see every thumbnail size YouTube actually has, and download the original image without an account.
UTM builderBuild one correctly encoded campaign URL, keep the setup as a reusable template, and take a locally verified CSV with it.
Color palette from image — full-pixel extractionCount every decoded pixel, build a deterministic 5-, 8- or 12-color palette, and export the exact coverage receipt.
YouTube banner makerBuild a banner at 2560 × 1440 and see the safe area YouTube publishes.
Domain age checkerSee the registry-reported registration event, exact source timestamp, and elapsed UTC days without turning it into an SEO score.
XML sitemap generatorTurn a URL list, CSV export or current-page link manifest into escaped, locally verified XML — without crawling or fetching a URL.
YouTube thumbnail makerBuild a thumbnail at the resolution YouTube publishes, in this tab.
Color blind simulator for imagesCompare the original with a local color-vision or grayscale preview, keep every pixel on this device, and download the simulated PNG.
Excel to CalendarTurns a spreadsheet of events into calendar files — one for the whole schedule, and one for each row.
YouTube transcript downloaderTurn a YouTube transcript into a clean TXT, SRT, VTT or CSV file, without sending the video anywhere.
Instagram photo resizerResize to the shapes Instagram publishes, and see what each one costs first.
Christmas card makerCreate a Christmas card with your local photo, greeting, logo, and editable festive layers on a live preview, then export PNG or JPEG.
Birthday card makerPersonalize a birthday card with a name, message, local photo, logo, and editable festive layers, then export PNG or JPEG.
Domain expiry checkerRead the registry-reported expiration event, exact timestamp, and distance from a dated lookup without guessing a renewal term.
Organization schema generatorTurn the organization details you can verify into deterministic JSON-LD — with a dated vocabulary check and no search appearance promise.
Get color palette from websiteMeasure the colors, font stacks, spacing, radii and shadows already rendered in an open page, then export a reproducible palette and CSS tokens.
Greeting card makerMake a personal greeting card from authored templates, local photos, your logo, and editable layers, then export a clean PNG or JPEG.
Check keyword density in words and phrasesCount literal one-, two-, or three-word phrases in text or visible HTML and see every percentage against one source-token denominator.
Robots.txt generator with verified crawler rulesBuild one auditable file, keep existing comments and sitemap records, and see the effective rule for search and AI crawler tokens before download.
Facebook cover photo makerBuild a cover in the shape Facebook publishes, and see what a phone keeps.
Favicon downloaderCollect the favicon declarations already exposed by an open website, verify the real files, and download only the icons you choose.
ICS File GeneratorMakes the .ics file and the pre-filled Google and Outlook links — because a downloaded file alone does not work for half your visitors.
Instagram story makerBuild a story at 9:16 and see the half of the height Meta says the interface covers.
App Store screenshot generatorCompose a capture onto Apple's published sizes, in a PNG with no alpha channel.
Favicon checkerCheck the declarations and real icon bytes from an open page, then get separate evidence-led reports for browser, Search, Apple and installed-app surfaces.
llms.txt generatorBuild a source-visible v2 file from fields, a URL list or sitemap XML — without crawling, invented summaries or hidden AI edits.
Twitter header makerBuild a header at 1500 × 500 and see the 60 pixels X says could be cropped.
FAQ schema generatorTurn the questions already visible on your page into safe Schema.org JSON-LD — without pretending Google still shows FAQ rich results.
ICS to CSVEvery event in the file as a row you can sort, filter and total — with a straight answer about which timezone each time is really in.
Sitemap validator for local XML filesPaste a sitemap or open an XML or XML.GZ file to check its namespace, entries, limits, dates and declared scope without uploading it.
ICS ViewerRead the calendar file you were sent — every event in plain words, and a straight answer about the time it claims to be.
RSS Feed Finder for Page HTMLFind RSS, Atom and JSON Feed clues in page HTML or the tab already open — with the declaration kept separate from network proof.
OG image generatorCompose a share image from your own artwork and text, preview the exact canvas, and export verified PNG and JPEG bytes locally.
Improve your Google ranking with a guided diagnosisAnswer one question at a time, run the right Google checks, and leave with a specific next step instead of a generic SEO checklist.
LinkedIn banner makerBuild a profile banner at the size LinkedIn publishes, in this tab.
Facebook ad makerBuild a feed image at 4:5, the ratio and resolution Meta's Ads Guide states.
Google Search Console report analyzerTurn Search Console CSV exports into a scored action queue — every rule, factor and evidence row stays visible.
Google Play feature graphic generatorBuild the exact 1024 × 500 graphic Play Console asks for, in a PNG with no alpha channel.
SERP preview toolPreview a desktop organic result and measure title and description width against one dated, explicit font and viewport model.
YouTube video ID finderExtract the exact 11-character ID from a YouTube link, then copy five canonical source forms for an archive check.
Alt Text Checker for Page HTMLSee the alt attribute, source, dimensions and action context for every image node — without pretending that non-empty text is automatically good text.
AGENTS.md prompt generatorBuild a transparent request for AGENTS.md or CLAUDE.md from visible scope, evidence and safety choices — without running a model or auditing your repository.
Color contrast checkerMeasure one foreground and background pair against named WCAG 2.2 text and non-text thresholds.

Guides

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