100% in your browser

Free web tools that work in your tab

Analyze your SEO, speed and security, or build a sitemap — without uploading anything to a server. Every Ellebyte tool runs entirely in your browser, so your data never leaves the page.

7
Free Tools
SEO · Sitemaps · Speed · Apps · Files · Security · QR
100%
In-Browser
No uploads, no tracking
0
Files Stored
Everything stays local
Free Checks
Free, no account needed

Pick a tool

Seven focused tools, one shared goal — quick, private answers for your digital projects.

SEO Site Checker

Score any website's technical SEO, on-page content, meta tags, headings, images and social tags. Get a clear audit with actionable fixes.

SEO Audit Instant score
Open tool

Website Mapper

Generate clean, standards-compliant XML sitemaps. Crawl a site or import your own URL list, then download sitemap.xml in seconds.

Sitemap Crawler XML
Open mapper

Website Speedtest

Measure load time, page weight, HTTP requests and content breakdown by type and domain. Get a Pingdom-style A–F grade with fixes.

Performance Grade A–F Waterfall
Test speed

App Auditor

Drop a .apk or .ipa file and inspect its manifest, permissions, signing certificate, embedded secrets, trackers and SDKs — right in your browser.

Security APK IPA
Audit an app

Files Counter

Select a local folder and instantly count every file and nested subfolder. Review totals and browse a clean directory breakdown without uploading anything.

Files Folders 100% local
Count files

Website Auditor

Audit HTTPS, CSP, HSTS, cookies, clickjacking protection, CORS, SRI and other browser security controls with prioritized fixes.

Security Headers Passive
Audit website

QR Code Generator

Create custom QR codes for websites, text, email and Wi-Fi. Choose colors and resolution, then download a sharp PNG without sending your content anywhere.

QR code Custom PNG 100% local
Create QR code

Why run tools in your browser?

Fast, private and dependency-free — no accounts, installs or hidden uploads.

Private by design

Your URLs, sitemaps, passwords and app files are processed locally. Nothing is sent to or stored on a server.

Instant results

No waiting on a backend queue. Click, run and get a scored report in seconds — often much faster than a remote API.

Free forever

Every tool here is free to use, with no usage caps or sign-ups. Add them to any page wherever Ellebyte lives.

How it works

No setup, no accounts. Pick a tool and go.

  1. 1Choose a tool from the grid above — SEO, sitemap, speed, app security, file counting or QR generation.
  2. 2Enter a URL, upload a file, or paste your own data. Everything is processed on your device.
  3. 3Review the clear, scored report, then copy or download the result (JSON, CSV, XML, SARIF…).
  4. 4Apply the fixes and re-run as often as you like — it is completely free.

Common questions

A little about how the tools keep your data private and work for free.

Are the tools really free?

Yes. Each tool needs no account and has no usage limits. The only network requests are to public proxy services used to fetch a scanned website for the SEO and speed checkers — and never to upload your own data.

Does the App Auditor upload my APK or IPA anywhere?

No. The file is read directly in your browser and parsed locally. "Your app file never leaves this tab" — none of its bytes are transmitted.

Why do some live-site checks use a proxy?

Browsers block cross-origin requests, so the SEO and speed tools call a public proxy to fetch remote pages. If a site blocks the proxy, you may see a partial result — the tools fall back across multiple proxies automatically.

Can I download my results?

Mostly yes. The sitemap tool exports sitemap.xml; the app auditor exports JSON, CSV and SARIF; the SEO and speed tools offer copy-and-download of their reports.

Ready to try a tool?

Start with whichever fits your next task — each is a single click away.