Inspection tag · batch 03

Give it the
Once Over.

A small, growing toolbox of free tools that check your spreadsheets, documents, and files for the mistakes that slip through before you send them on. One job each. Nothing uploaded. Nothing to sign up for.

Nothing leaves your browser

Every tool reads your file client-side, with JavaScript already sitting on the page. There's no server upload step to trust — the file just never goes anywhere.

One job, done properly

Each tool checks one kind of file and explains what it found in plain English — with enough detail (a paragraph number, a cell reference, a file size) to actually go fix it.

Built from real messes

Every check exists because a real inherited spreadsheet, document, or export needed it — not because a feature list said so.

No dashboards, no accounts

Drop a file into the right tool below — audits, a favicon pack, a color palette — and get real results back in seconds. That's the whole interface.

The toolbox

Live tools

Eight so far. Click through — each one explains itself in seconds once you drop in a file.

OK

Spreadsheets

Spreadsheet
Auditor

Paste one formula for a step-by-step, plain-English breakdown, or drop a whole workbook to catch #REF! errors, circular references, and formulas that don't match the rest of their column.

Open tool OK

Word documents

Document
Auditor

Drop a .docx and get flagged heading structure, missing alt text, vague links, and leftover tracked changes — each finding with a paragraph number and a snippet you can search for.

Open tool OK

Presentations

PowerPoint
Auditor

Drop a .pptx and catch hidden slides that never got deleted, slides missing a title, images with no alt text, off-canvas leftovers, and inconsistent fonts across the deck.

Open tool OK

Images

Favicon
Generator

Drop one image and get every favicon and app-icon size a site actually needs, rendered instantly and bundled into one download — plus the <head> snippet to paste in.

Open tool OK

Images

Palette
Checker

Drop an image to inspect any pixel's color, pull its dominant palette, and check text-on-background contrast against WCAG — with a screen-wide eyedropper in Chrome and Edge.

Open tool OK

Images

PNG
Compressor

Drop a PNG and get it back smaller — a lossless mode that's pixel-for-pixel identical, or a lossy mode with a colors slider — with a live before/after size comparison, and transparency that survives the reduction.

Open tool OK

PDFs

PDF Auditor

Drop a PDF and get a plain-English WCAG report — whether it's tagged, which images are missing alt text, where the heading order skips a level, and which pages look like an untagged scan.

Open tool OK

Technical SEO

Robots.txt & Sitemap Validator

Drop in a robots.txt file, a sitemap.xml file, or both, for a plain-English SEO audit — invalid directives, crawl-blocking mistakes, malformed entries, and the places where the two disagree with each other.

Open tool